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Logs of Test Holes and Wells, continued

The logs of 119 test holes and wells in Pawnee Valley are given on the pages that follow. The logs of 8 wells were furnished by private drillers, and the 111 test holes were drilled by the State Geological Survey with a hydraulic-rotary drill rig. The test hole and well-numbering system is described earlier.

T. 20 S. || T. 21 S. || T. 22 S. || T. 23 S.

Sample log of test hole 21-16-17aa in the NE cor. sec. 17, T. 21 S., R. 16 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 1,998.6 feet.			Thickness, feet	Depth, feet
		Road fill and soil, gray brown	2	2
Quaternary--Pleistocene
	Terrace deposits
		Silt, yellow-gray	3	5
		Silt, light-brown to buff, and fine sand	6	11
		Silt, light-buff; contains a few nodules of caliche	26	37
		Silt, gray-white; contains fine sand	6	43
		Silt, green and dark-gray; contains much fine to medium sand	15	58
		Silt, light-gray to buff, and fine to medium sand; contains caliche. Silt is in part slightly cemented	66	124
		Gravel, fine, and sand	4	128
		Silt, light gray, and fine to medium sand	8	136
		Gravel, fine to coarse, and sand; contains much buff and light-gray silt	4	140
		Gravel, fine to medium, sand, and silt, light-gray to buff	5	145
Cretaceous--Gulfian
	Dakota formation
		Sandstone, medium- to fine-grained, white, yellow, and brown; contains yellow and light-gray clay	15	160

Sample log of test hole 21-16-20aa in the NE cor. sec. 20, T. 21 S., R. 16 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 1,997.6 feet.			Thickness, feet	Depth, feet
		Road fill and soil, dark gray-brown	1	1
Quaternary--Pleistocene
	Terrace deposits
		Silt, buff-gray	3	4
		Silt, tan, and fine to very fine sand; contains nodular caliche	14	18
		Silt, light-gray, and caliche	7	25
		Silt, light-buff; contains very fine to fine sand and a few streaks of greenish and yellowish silt and clay	25	50
		Silt, blue-gray and buff, and fine sand	10	60
		Silt, gray to buff, and very fine to fine sand	10	70
		Silt, dark-gray and green, and fine sand	5	75
		Silt, buff, containing fine sand and caliche	25	100
		Silt, brown and greenish-gray, and fine sand; in part cemented by caliche; contains gravel	10	110
		Sand, very fine to fine, and silt; brown; friable	10	120
		Silt, buff and light-gray, and fine to medium sand; contains gravel	12	132
		Sand, coarse to fine, and silt; yellow-buff; contains fine to coarse gravel	4	136
Cretaceous--Gulfian
	Dakota formation
		Sandstone, medium-grained, white	14	150

Sample log of test hole 21-16-29aa in the NE cor. sec 29, T. 21 S., R. 16 W., drilled by the State Geological Survey, May, 1945. Surface altitide, 2,007.5 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
Quaternary--Pleistocene
	Terrace deposits
		Silt, gray-brown	5	7
		Sand, medium to fine, and silt; buff	3	10
		Silt, buff, tan, and light-gray	10	20
		Silt, buff, containing caliche and some pebbles derived from cretaceous rocks	59	79
		Gravel, coarse to fine, and sand; contains buff silt	3	82
Cretaceous--Gulfian
	Dakota formation
		Clay, light blue-gray and mottled yellow and red	4	86

Driller's log of well 21-16-29aa of the City of Larned in the NE NE sec. 29, T. 21 S., R. 16 W. Surface altitude, 2,006 feet.			Thickness, feet	Depth, feet
		Soil, black	3	3
		Gumbo	7	10
		Clay, yellow	6	16
		Clay, light	12	28
		Clay, soft, light	14	42
		Clay, light yellow	12	54
		Clay, soft	16	70
		Clay, hard, tough	4	74
		Clay, soft	11	85
		Clay, tough, and rocks	4	89
		Clay, red	2	91
		Sand and clay, blue	2	93
		Clay, green	3	96
		Clay, blue	2	98
		Clay, blue, and rocks	2	100
		Sandstone, light	10	110
		Clay, yell ow	2	112
		Rocks, green and red, and clay	2	114
		Rainbow clay (probably varicolored clay)	4	118
		Shale, blue	5	123

Driller's log of well 21-16-29ab1 of the City of Larned in the NW NE sec. 29, T. 21 S., R. 16 W. Surface altitude, 2,005 feet.			Thickness, feet	Depth, feet
		Soil, black	3	3
		Caliche and blue clay	5	8
		Clay, light, and sand	7	15
		Clay, yellow	10	25
		Clay, yellow, and sand	7	32
		Clay, soft, yellow	8	40
		Clay, yellow	10	50
		Clay, light	8	58
		Clay, soft, yellow, and caliche	10	68
		Clay, yellow	5	73
		Clay, brown	9	82
		Clay, yellow	8	90
		Rainbow clay (probably varicolored clay)	2	92
		Rock,red	1	93
		Rainbow clay (probably varicolored clay)	2	95
		Clay, light, and coarse sand	4	99
		Sandstone	18	117
		Rainbow clay (probably varicolored clay)	11	128
		Shale, black	4	132

Driller's log of well 21-16-29ab2 of the City of Larned in the NW NE sec. 29, T. 21 S., R. 16 W. Surface altitude, 2,006 feet.			Thickness, feet	Depth, feet
		Soil, black	4	4
		Clay, sand, and caliche	16	20
		Clay, yellow	10	30
		Clay and sand	5	35
		Clay, yellow	40	75
		Clay, soft, and sand	5	80
		Clay, yellow	14	94
		Clay, soft, and sand	4	98
		Clay, sand, and rock	3	101
		Clay, soft, and sand	4	105
		Sandstone, coarse, dark	2	107
		Sandstone, light	20	127
		Shale, black	1	128
		Sandstone, coarse	2	130
		Sandstone, light	6	136
		Shale, blue	4	140

Driller's log of well 21-16-32da of the City of Larned in the NE SE sec. 32, T. 21 S., R. 16 W. Surface altitude, 2,004.6 feet.			Thickness, feet	Depth, feet
		Soil	4	4
Quaternary--Pleistocene
	Alluvium
		Sand	4	8
		Sand, coarse	7	15
		Sand and gravel (static water level 15 feet)	13	28
Cretaceous--Gulfian
	Dakota formation
		Clay, blue (Dakota water level 40 feet)	19	47
		Clay, yellow	6	53
		Clay, blue	3	56
		Clay, yellow	4	60
		Clay, blue	6	66
		Clay, yellow, and brown rock	4	70
		Clay, yellow, and white rock	4	74
		Sandstone, rusty	4	78
		Clay, bright yellow	3	81
		Rainbow clay (probably varicolored clay)	2	83
		Clay, light gray, and rocks	6	89
		Shale, blue	12	101
		Clay, yellow	8	109
		Shale, blue	7	116
		Clay, light	6	122
		Sandstone	1.5	123.5
		Clay, yellow	4 5	128
		Shale, blue	3	131
		Sandstone	10	141
		Shale, blue	24	165

Driller's log of well 21-16-32dd of the City of Larned in the SE SE sec. 32, T. 21 S., R. 16 W. Surface altitude, 1,999.8 feet.			Thickness, feet	Depth, feet
		Soil, black	2	2
Quaternary--Pleistocene
	Alluvium
		Gumbo	3	5
		Clay and sand	3	8
		Sand (static water level 13 feet)	15	23
		Gravel	4.5	27.5
		Clay, yellow (Dakota water level 30 feet)	8.5	36
		Clay, yellow, and brown rocks	1	37
		Sand and gravel	3	40
Cretaceous--Gulfian
	Dakota formation
		Clay, yellow, and brown rocks	3	43
		Clay, yellow	4	47
		Clay, gray	2	49
		Clay, yellow	6	55
		Clay, gray	2	57
		Clay, yellow	22	79
		Rainbow clay (probably varicolored clay)	2	81
		Shale, blue	10	91
		Sandstone	37	128
		Sand, coarse, and brown rocks	2	130
		Sandstone	8	138
		Shale, blue	5	143

Drillers log of well 21-16-33ba in the NE NE sec. 33, 7. 21 S., R. 16 W.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Earth	10	10
		Sand	6	16
		Gravel, coarse	9	25
		Sand	10	35
		Sand, fine	9	44
Cretaceous--Gulfian
	Dakota formation (?)
		Rock, hard	2	46
		Clay, yellow	10	56

Sample log of test hole 21-17-6cc in the SW cor. sec. 6, T. 21 S., R. 17 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 2,106.5 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, tan and gray	3	5
		Clay, silty, brown	2	7
		Clay, silty, tan and buff	9	16
		Clay, silty, tan; contains black "ironstone"	1	17
		No sample recovered	2	19
Cretaceous--Gulfian
	Dakota formation
		Sandstone, very fine, red and tan; contains tan silty clay and black "ironstone"	3	22
		Clay, silty, light-gray and tan; contains gray shale	6	28

Sample log of test hole 21-17-18bb at the NW cor. sec. 18, T. 21 S., R. 17 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,098.6 feet.			Thickness, feet	Depth, feet
		Soil, gray	4	4
Quaternary--Pleistocene
	Terrace deposits
		Silt, light grayish-tan	3	7
		Silt, tan and gray	4	11
		Silt, tan and buff	9	20
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, yellow and tan	5	25

Sample log of test hole 21-17-19bb at the NW cor. sec. 19, T. 21 S., R. 17 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,095.7 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
Quaternary--Pleistocene
	Terrace deposits
		Silt, tan and gray	5	8
		Silt, brown	3	11
		Silt, tan and brown	5	16
		Silt, tan; contains white caliche	8	24
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine to medium, brown and white	4	28

Sample log of test hole 21-17-19cc at the SW cor. sec. 19, T. 21 S., R. 17 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,070.8 feet.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Terrace deposits
		Silt, tan and light-gray	4	7
		Clay, silty, tan and brown	2	9
		Clay, silty, brownish-tan	4	13
		Clay, silty, tan	13	26
		Caliche, soft, light tan to white, contains silt and fine sand	1	27
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine to coarse, tan and brown	2	29

Sample log of test hole 21-18-4cc at the SW cor. sec. 4, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,111.0 feet.			Thickness, feet	Depth, feet
		Road fill	4.5	4.5
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, light-gray	2.5	7
		Clay, silty, tan to brown	3	10
		Clay, silty, buff; contains fragments of white caliche	26	36
		Clay, silty, yellowish tan; contains fine to medium sand	5	41
		No sample recovered below a depth of 41 feet.
Driller believes the test hole penetrated coarse sand and gravel between the depths of 41 and 46 feet and shale or clay between the depths of 46 and 50 feet. The clay may be a part of the Dakota formation.

Sample log of test hole 21-18-5bb at the NW cor. sec. 5, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,114.8 feet.			Thickness, feet	Depth, feet
		Road fill	4	4
Quaternary--Pleistocene
	Terrace deposits
		Silt, brown and tan	3	7
		Clay, silty, brown	4	11
		Clay, silty, gray and tan	2.5	13.5
		Clay, silty, brown	6.5	20
		Clay, silty, tan to brown	18	38
		Clay, silty, buff and tan; contains fine sand	20	58
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, tan, buff, and yellow	2	60

Sample log of test hole 21-18-7aa at the NE cor. sec. 7, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude 2,095.2 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
Quaternary--Pleistocene
	Terrace deposits
		Silt, gray and tan	5	8
		Clay, silty, brown and tan	12	20
		Clay, silty, contains fine sand and caliche; brown to tan	8	28
		Clay, silty; contains fine to medium tan gravel	5	33
		Clay, silty, tan	17	50
		Clay, silty, buff	12	62
		Clay, silty, buff to light gray; contains fine to medium tan gravel and caliche	6	68
		Gravel, fine to medium; contains silt and caliche; tan,	5.5	73.5
		Clay, silty; contains fine to medium gravel; tan	7.5	81
		Gravel, fine to coarse; contains silt; tan	10.5	91.5
		Silt, tan to buff	3.5	95
		Gravel, fine to coarse, tan; contains tan silt and fragments of brown "ironstone"	8	103
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine- to medium-grained, tan to brown	7	110

Sample log of test hole 21-18-7dd at the SE cor. sec. 7, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,086.0 feet.			Thickness, feet	Depth, feet
		Road fill	2.5	2.5
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, tan and brown; contains white caliche	2.5	5
		Clay, silty, brown; contains white caliche	2	7
		Clay, silty, tan and brown; contains white caliche	66	73
		Gravel, fine to medium, tan and gray; contains fine to medium tan sand	10	83
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine, tan	5	88

Sample log of test hole 21-18-10aa at the NE cor. sec. 10, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,092.0 feet.			Thickness, feet	Depth, feet
		Road fill	4	4
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, tan and gray	7
		Clay, silty, brown	3	10
		Clay, silty, tan and buff; contains fragments of caliche	19	29
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, tan and yellow	7	36

Sample log of test hole 21-18-12bb at the NW cor. sec. 12, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude 2,096.8 feet.			Thickness, feet	Depth, feet
		Road fill	5	5
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, grayish-tan and brown	3	8
		Clay, silty, brown	3	11
		Clay, silty, buff, contains fragments of white caliche	40	51
		Gravel, fine to coarse, tan and buff; contains white and tan caliche and fragments of tan limestone	1	52
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine to medium, tan to brown	4	56

Sample log of test hole 21-18-17cc at the SW cor. sec. 17, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,075.4 feet.			Thickness, feet	Depth, feet
		Road fill and dark-gray silty soil	7	7
Quaternary--Pleistocene
	Alluvium
		Silt, dark-gray to brown	2	9
		Clay, silty, dark-gray and tan	3	12
		Clay, silty, tan	7	19
		Gravel, fine to coarse, brown and tan; contains white caliche and tan silt	1	20
		Clay, silty; contains fine to coarse sand; brown	6.5	26.5
		Gravel, fine to coarse; contains silt and fine sand; tan	0.5	27
		Clay, silty, tan and gray; contains white caliche	33	60
		Gravel, fine to medium, tan and gray; contains tan silt and white and tan caliche	5	65
		Clay, silty, tan; contains white caliche	12	77
		Gravel, fine to coarse, tan and gray; contains tan silt and white and tan caliche	37.5	114.5
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, tan and yellow mottled red	5.5	120

Sample log of test hole 21-18-29bb at the NW cor. sec 29, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,063.6 feet.			Thickness, feet	Depth, feet
		Soil, silty; contains fine sand; brown	3.5	3.5
Quaternary--Pleistocene
	Alluvium
		Clay, silty, gray and brown; contains white caliche	11.5	15
		Clay, silty, gray and tan; contains fragments of white shells and fine tan sand	11	26
		Clay, silty, tan with orange stains	9	35
		Sand, fine to medium, tan	5	40
		Gravel, fine to coarse; contains coarse sand; tan	6	46
		Clay, silty, buff to tan	24	70
		Clay, silty; contains fine to medium sand, and fine gravel; buff to tan	10	80
		Gravel, fine to medium; contains fine to coarse sand and fragments of "ironstone"; buff to tan	10	90
		Gravel, fine to coarse; contains silt, fine to coarse sand, and caliche; buff and gray	11	101
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, yellow; contains fine tan sand and brown fine-grained sandstone	4	105
		Clay, silty, bluish-gray with faint red mottle	5	110

Sample log of test hole 21-18-32bb at the NW cor. sec. 32, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,059.6 feet.			Thickness, feet	Depth, feet
		Soil, dark gray	3	3
Quaternary--Pleistocene
	Alluvium
		Clay, silty, dark-gray; contains coarse brown sand and white caliche	25	28
		Sand, fine to coarse, tan; contains white caliche	2	30
		Sand, fine to coarse, tan and gray; contains fine to coarse tannish-gray gravel and fragments of white shells	16	46
		Silt, buff to tan	7	53
		Sand, fine to coarse, tan	9	62
		Silt, buff	3	65
		Gravel, fine to medium; contains fine to coarse sand; tan and gray	3	68
		Silt, tan; contains fine to medium buff gravel	12	80
		Clay, silty, tan with yellow limonitic stains	10	90
		Gravel, fine to medium; contains silt and fine to coarse sand	15	105
		Silt, tan to buff; contains tan caliche having yellow stains and fine to coarse sand and gravel	5	110
		Gravel, fine to coarse; contains caliche; tan	2	112
Cretaceous
	Dakota formation (Gulfian)
		Sandstone, fine to medium, tan and brown	3	115
		Clay, gray, mottled red	13	128
		Sandstone, fine to medium, yellow and tan	9	137
		Sandstone, fine to coarse; contains fine gravel; tan with yellow limonitic stains	13	150
		Sandstone, fine to coarse, tan with yellow stains	9	159
		Clay, silty, light-gray; contains coarse sand	11	170
	Kiowa shale (Comanchean)
		Clay, silty, bluish gray; contains light-gray to white sandstone	38	208
		Clay, silty, light-gray; contains fragments of brown carbonaceous material	7	215
		Clay, silty, gray; contains fragments of gray sandstone and white lime	23 5	238.5
		Pyrite and gray silty clay	1	239.5
		Shale, gray; contains fragments of white shells and fragments of brown and black carbonaceous material	66.5	306
		Limestone, hard, white	0.5	306.5
		Shale, gray; contains fragments of white shells	77.5	384
	Cheyenne sandstone (Comanchean)
		Shale, light to medium gray; contains very fine to fine sand	19	403
Permian redbeds (Undifferentiated)
		Shale, brown; contains fine sandstone. Encountered artesian water	15	418

Sample log of test hole 21-18-36aa at the NE cor. sec. 36, T. 21 S., R. 18 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,040.3 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
Quaternary--Pleistocene
	Alluvium
		Silt, gray and tan	15	18
		Silt, light-gray	4	22
		Clay, silty; contains fine sand; tan	5	27
		Clay, silty, tan and gray; contains very fine to fine sand	6	33
		Sand, fine to coarse, tan; contains fragments of white shells	13	46
		Clay, silty, tan and gray; contains fine to medium sand	2	48
		Clay, silty, tan and gray; contains fine sand	8	56
		Gravel, fine to coarse, tan; contains silt and fine to medium sand	1	57
		Silt, tan; contains fine to coarse gravel, fine to medium sand, and white caliche	6	63
		Gravel, fine to coarse, tan; contains silt, fine to medium sand, and caliche	2	65
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, tan mottled yellow	5	70
		Clay, silty, light-gray to dark-gray	8	78

Sample log of test hole 21-19-17dd at the SE cor. sec. 17, T. 21 S., R. 19 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 2,085.6 feet.			Thickness, feet	Depth, feet
		Road fill	1	1
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, brown	4	5
		Clay, silty; contains fine to medium sand; tan and brown	5	10
		Clay, silty; contains fine sand; tan	10	20
		Clay, silty; contains fine sand; light-brown	7	27
		Clay, silty; contains fine sand; tan to light-brown	3	30
		Clay, silty, light-brown	2	32
		Clay, silty; contains medium sand and small fragments of "ironstone"; brown to tan	4	36
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, contains fine sandstone; yellow and light-gray	4	40

Sample log of test hole 21-19-18dd at the SE cor. sec. 18, T. 21 S., R. 19 W., drilled by the State Geological Survey, July, 1945. Surface altitude, 2,095.6 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, buff	34	37
		Gravel, fine to coarse, buff; contains silt, sand, and white caliche	3	40
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, tan and yellow; contains sand	2	42

Driller's log of well 21-19-20cc in the SW SW sec. 20, T. 21 S., R. 19 W. Surface altitude, 2,086.2 feet.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Soil and clay	30	30
		Sand, dry	1	31
		Sand, fine and coarse	33	64
		Sand and clay	4	68
		Clay	11	79
		Gravel, coarse	14	93
Cretaceous--Gulfian
	Dakota formation (?)
		Clay, sandy	3	96

Sample log of test hole 21-19-28bb at the NW cor. sec. 28, T. 21 S., R. 19 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 2,079.5 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
Quaternary--Pleistocene
	Alluvium
		Silt,tan	3	5
		Clay, silty, gray	1	6
		Clay, silty, brown	7	13
		Clay, silty, tan to gray	4	17
		Clay, silty, brown and gray	10	27
		Clay, silty; contains fine to medium sand; tan and light-gray	5	32
		Clay, silty; contains very fine sand; tan and light-gray	4	36
		Gravel, fine to coarse; contains silt; tan	14	50
		Gravel, fine to coarse, tan; contains tan silt and white caliche	15	65
		Clay, silty, gray; contains fine to medium tan gravel	9	74
		Gravel, fine to medium, tan and gray; contains tan caliche	6	80
		Gravel, fine to coarse, tan and gray; contains tan silt and lime-cemented zones	10	90
		Sand, medium to coarse; contains fine gravel and silt; tan	10	100
		Gravel, fine to medium; contains coarse sand and silt; tan and gray	16	116
		Gravel, fine to coarse; contains fine to coarse sand and silt; tan to gray	13	129
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine to coarse, brown	6	135

Sample log of test hole 21-19-32aa at the NE cor. sec. 32, T. 21 S., R. 19 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 2,077.2 feet.			Thickness, feet	Depth, feet
		Soil, sandy, dark brownish-gray	3	3
Quaternary--Pleistocene
	Alluvium
		Silt and sand, very fine to fine; gray to tan	7	10
		Silt and sand, fine; tan	10	20
		Silt and sand, very fine; tan; contains brown to yellow limonitic stains	12	32
		Silt and sand, very fine; contains brown to yellow limonitic stains, limy concentrations, and a few medium-grained fragments of tan to gray quartz	4	36
		Gravel, fine to medium; contains a few limy zones; tan,	4	40
		Gravel, fine to coarse, contains caliche, fossil bone, and fragments of shells; tan	10	50
		Gravel, fine to coarse; contains caliche; tan	10	60
		Gravel, fine to medium; contains caliche; tan	10	70
		Gravel, fine to medium; contains caliche and fragments of fossil bone; tan	8	78
		Clay, silty, gray and tan	7	85
		Clay, silty; contains fine-grained gravel and caliche; gray to tan	7	92
		Gravel, fine to coarse, gray to tan; contains caliche and minor amounts of fine tan sand	8	100
		Silt and sand, fine to coarse; contains fine to medium gravel; brown	10	110
		Clay, silty; contains medium gravel; tan	10	120
		Gravel, fine to coarse; contains numerous fragments of "ironstone"; tan	6	126
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine- to medium-grained, tan to brown	4	130

Sample log of test hole 21-19-32dd at the SE cor. sec. 32, T. 21 S., R. 19 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 2,079.0 feet.			Thickness, feet	Depth, feet
		Soil, dark gray	3	3
Quaternary--Pleistocene
	Alluvium
		Clay, silty, brown to gray; contains fragments of gastropods	6	9
		Clay, silty, brown	4	13
		Clay, silty, tan	5	18
		Clay, silty, buff	2	20
		Clay, silty; contains medium gravel; tan	10	30
		Sand, medium, and silt; contains caliche; tan	10	40
		Sand, medium to coarse, tan	8	48
		Clay, silty; contains fine-grained sand; tan	2	50
		Silt and medium to coarse sand; tan	10	60
		Sand, medium to coarse; contains gravel; tan	7	67
		Clay, silty, tan to yellowish-tan	7	74
		Clay, silty; contains medium-grained sand; buff	6	80
		Gravel, fine to medium; contains fragments of "ironstone"	10	90
		Gravel, fine to coarse, tan	12	102
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, bluish-gray; contains yellow limonitic stains	8	110

Sample log of test hole 21-20-9aa at the NE cor. sec. 9, T. 21 S., R. 20 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 2,132.8 feet.			Thickness, feet	Depth, feet
		Soil, silty, brown	2	2
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, tan to buff	8	10
		Clay, silty, tan	10	20
		Clay, silty; contains a few lime concretions; tan	10	30
		Clay, silty; contains a few small fragments of "ironstone"; tan	8	8
		Gravel, fine to medium; contains silt; tan	9	47
		Silt, buff	17	64
		Silt, contains a few lime-cemented zones; yellow to light tan	5	69
		Gravel, fine to coarse; contains silt; tan	21	90
		Gravel, fine to coarse; contains silt and caliche; tan	10	100
Cretaceous--Gulfian
	Dakota formation
		Clay, silty; contains limonitic concretions; mottled red and tan	3	103

Sample log of test hole 21-20-9dd at the SE cor. sec. 9, T. 21 S., R. 20 W., drilled by the State Geological Survey, May, 1945. Surface altitude., 2,111.4 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, tan	8	10
		Clay, silty; contains hard white particles (bentonite?); tan	10	20
		Clay, silty, tan	30	50
		Clay, silty; contains caliche; tan to gray	10	60
		Clay, silty, dark-gray and tan giving unit a mottled appearance	5	65
		Clay, silty, dark-gray and tan	7	72
		Gravel, fine to coarse, tan to gray, contains tan silt	8	80
		Gravel, fine to medium, contains silt and caliche; tan	6	86
		Clay, silty; contains fine to coarse gravel; buff	9	95
		Clay, silty; contains fine to medium gravel; buff	5	100
		Gravel, fine to medium; contains silt; buff	8	108
Cretaceous--Gulfian
	Dakota formation
		Sandstone, medium, white	7	115

Sample log of test hole 21-20-15cc at the SW cor. sec. 15, T. 21 S., R. 20 W., drilled by the State Geological Survey, May, 1945. Surface altitude, 2,097.1 feet.			Thickness, feet	Depth, feet
		Soil, silty, brown	3	3
Quaternary--Pleistocene
	Alluvium
		Clay, silty, brown	13	16
		Clay, silty, tan	4	20
		Clay, silty; contains fine sand; tan	8	28
		Clay, silty; contains fine sand and fragments of fossil shells; tan	4	32
		Sand, medium to coarse; contains silt and fine gravel	12	44
		Gravel, fine to coarse; contains silt, sand, and caliche; tan	6	50
		Gravel, fine to coarse; contains coarse sand, silt and caliche; tan	13	63
		Clay, silty; contains fine gravel; tan to gray	4	67
		Clay, silty; contains fine sand; light tan	4	71
		Clay, silty; contains caliche; light tan	3	74
		Gravel, fine to medium; contains silt; tan	6	80
		Gravel, fine to coarse; contains caliche and silt; tan	10	90
		Clay, silty; contains lime-cemented zones; light-tan	12	102
		Clay, silty, tan to yellowish-tan	5	107
		Gravel, fine to coarse; contains silt; tan to gray	12.5	119.5
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, mottled tan and rose	5.5	125

Sample log of test hole 21-20-17dd at the SE cor. sec. 17, T. 21 S., R. 20 W., drilled by the State Geological Survey, July, 1945. Surface altitude, 2,103.7 feet			Thickness, feet	Depth, feet
		Road fill	3	3
Quaternary--Pleistocene
	Alluvium
		Clay, silty, tan and brown	23	26
		Clay, silty, tan and brown; contains fine to coarse sand	4	30
		Sand, fine to coarse, tan; contains tan silt and fragments of white shells	17	47
		Clay, silty, tan and buff	10	57
		Clay, silty, bluish-gray	12	69
		Gravel, fine to medium, tan; contains tan caliche	10	79
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine, tan and white	14	93

Sample log of test hole 21-20-18cc at the SW cor. sec. 18, T. 21 S., R. 20 W., drilled by the State Geological Survey, July, 1945. Surface altitude, 2,121.8 feet.			Thickness, feet	Depth, feet
		Soil, dark gray	7	7
Quaternary--Pleistocene
	Alluvium
		Clay, silty, light-gray	2	9
		Clay, silty, light-tan; contains fine to medium sand and white nodular caliche	6	15
		Clay, silty, buff	18	33
		Clay, silty, tan to buff; contains fine to coarse sand and white caliche	15	48
		Clay, silty, dark-gray	2	50
		Clay, silty, tan; contains fine to medium sand	8	58
		Gravel, fine to medium; contains fine to coarse sand, silt, and tan caliche	8	66
		Clay, silty, dark-gray; contains fine to medium sand and fragments of snail shells	4	70
		Gravel, fine to coarse, tan; contains fine to coarse sand and tan caliche	3	73
		Clay, silty, light-gray; contains fine sand	8	81
		Clay, silty, tan with yellow stains; contains fine to coarse sand	3	84
		Gravel, fine to coarse, tan; contains fine to coarse sand and tan caliche	9	93
		Gravel, fine to coarse; contains tan and gray silt and white caliche	2	95
		Gravel, fine to coarse; contains fine to coarse sand and silt	7	102
		Sand, fine to coarse; contains tan silt	10	112
		Gravel, fine to coarse; contains medium to coarse sand and tan and white caliche	26	138
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, gray mottled red	2	140

Sample log of test hole 21-20-18dd at the SE cor. sec. 18, T. 21 S., R. 20 W., drilled by the State Geological Survey, July, 1945. Surface altitude, 2,113.1 feet.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, dark-tan	20	20
		Clay, silty, tan and buff	10	30
		Clay, silty, grayish-tan with small red concretions	10	40
		Clay, silty, light-gray to dark-gray	8	48
		Silt, dark-tan and gray; contains fine to medium sand and fragments of white shells	3	51
		Gravel, fine to coarse, tan; contains fine to coarse sand and fragments of white shells	9	60
		Sand, fine to coarse, tan; contains fine to coarse gravel and white to tan caliche	10	70
		Gravel, fine to coarse, tan; contains medium to coarse sand and tan and white caliche	27	97
		Clay, silty, tan; contains fine to coarse sand and white and tan caliche	14	111
		Gravel, fine to coarse, tan; contains fine to medium sand, and white and tan caliche	5	116
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, light-gray to tan mottled red	4	120

Sample log of test hole 21-20-19dcc in the SW SE sec. 19, T. 21 S., R. 20 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,115.7 feet; depth to water level, 41.1 feet, November 6, 1947.			Thickness, feet	Depth, feet
		Road fill, dark-brown silt	2	2
Quaternary--Pleistocene
	Alluvium
		Silt, dark-brown	5	7
		Silt, clayey, limy, light-tan	1,3	20
		Clay, tan, and some gray clay	19	39
		Clay, dark blue-gray	10	49
		Clay, light-gray	9	58
		Sand, medium to coarse	2	60
		Sand, medium to coarse, and fine to coarse gravel	17	77
		Clay, blue-gray	6	83
		Sand, medium to coarse	7	90
		Sand, medium to coarse, and fine to coarse gravel	12	102
		Gravel, coarse	3	105
		Silt, brown	5	110
		Silt, brown, and fine to coarse sand	20	130
		Sand, coarse, and fine to coarse gravel	5	135
		Gravel, coarse to fine, and gray clay	5	140
Cretaceous--Gulfian
	Dakota formation
		Shale, limy, hard, blue-gray, and some brown to light-gray clay	23	163

Sample log of test hole 21-20-23bb at the NW cor. sec. 23, T. 21 S., R. 20 W., drilled by the State Geological Survey, July, 1945. Surface altitude, 2,094.8 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
Quaternary--Pleistocene
	Alluvium
		Clay, silty, tan-gray	21	23
		Clay, silty; contains fine sand; tan and light-yellowish tan	3	26
		Silt; contains fine to coarse sand; tan	4	30
		Gravel, fine to medium; contains medium to coarse sand and silt; tan	31	61
		Clay, silty, buff; contains white caliche	22	83
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, tan mottled red	3	86

Sample log of test hole 21-20-24aa at the NE cor. sec. 24, T. 21 S., R. 20 W., drilled by the State Geological Survey, July, 1945. Surface altitude, 2,094.9 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
Quaternary--Pleistocene
	Alluvium
		Clay, silty, buff; contains caliche	7	10
		Clay, silty, tan and yellow; contains fine sand	19	29
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, tan and yellow	2	31

Sample log of test hole 21-20-24bb at the NW cor. sec. 24, T. 21 S., R. 20 W. Surface altitude, 2,093.0 feet.			Thickness, feet	Depth, feet
		Soil, dark gray	1.5	1.5
Quaternary--Pleistocene
	Alluvium
		Clay, silty, tan to gray	23.5	25
		Clay, silty, buff; contains fragments of shells	7	32
		Sand, fine to coarse, tan; contains fragments of caliche and tan silt	8	40
		Gravel, fine to coarse, tan; contains fine to coarse sand, silt, and tan and white caliche	25	65
		Clay, silty, tan and gray; contains nodular caliche	11	76
		Sand, fine to coarse, yellowish-tan; contains fine to coarse gravel and tan silt	2	78
Cretaceous--Gulfian
	Dakota formation
		Clay, silty, yellow, contains fragments of brown "ironstone" and fine sand	2	80

Sample log of test hole 21-20-27cc at the SW cor. sec. 27, T. 21 S., R. 20 W., drilled by the State Geological Survey, June, 1.945. Surface altitude, 2,123.8 feet.			Thickness, feet	Depth, feet
		Road fill	2	2
Quaternary--Pleistocene
	Terrace deposits
		Clay, silty, tan to brown	3	5
		Clay, silty, brown	2	7
		Clay, silty, tan to brown	12	19
		Clay, silty, tan	11	30
		Clay, silty; contains a few lime-cemented zones; buff	11	41
		Clay, silty; contains coarse sand; tan	3	44
Cretaceous--Gulfian
	Dakota formation
		Sandstone, fine to medium, tan to brown	4	48

Sample log of test hole 21-20-28aa at the NE cor. sec. 28, T. 21 S., R. 20 W., drilled by the State Geological Survey, June, 1945. Surface altitude, 2,096.4 feet.			Thickness, feet	Depth, feet
		Road fill	3	3
Quaternary--Pleistocene
	Alluvium
		Clay, silty, tan and gray	7	10
		Clay, silty, brown and gray	15	25
		Sand, medium to coarse; contains a few lime-cemented zones; tan	5	30
		Sand, coarse; contains fine gravel; tan	10	40
		Gravel, fine to coarse; contains coarse sand; tan to gray	5	45
		Clay, silty; contains coarse sand and fine gravel; tan,	2	47
		Gravel, fine to coarse, tan to gray	13	60
		Sand, coarse; contains fine to medium gravel; tan	10	70
		Gravel, fine to coarse, tan	10	80
		Gravel, fine to coarse, tan to gray	13	93
Cretaceous--Gulfian
	Dakota formation
		Clay, silty; contains sandstone and purple and tan fragments of "ironstone"	7	100

Sample log of test hole 21-21-2bbb in the NW NW sec. 2, T. 21 S., R. 21 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,167.8 feet; depth to water level, 27.0 feet, November 4, 1947.			Thickness, feet	Depth, feet
		Soil, black	2	2
Quaternary--Pleistocene
	Terrace deposits (?)
		Clay and silt, limy; light-brown	25	27
		Clay and silt, limy; dark-brown	4	31
		Clay and silt; light-brown; contains a few limestone pebbles at 47 to 48 feet	24	55
Cretaceous--Gulfian
	Dakota formation
		Shale, clayey, gray; contains yellow clay	5	60

Sample log of test hole 21-21-3ddd in the SW SW sec. 3, T. 21 S., R. 21 W., drilled by the State Geological Survey, October, 1947. Surface altitude, 2,152.7 feet; depth to water level, 26.8 feet, November 1, 1947.			Thickness, feet	Depth, feet
		Road fill, hard black silt	2	2
Quaternary--Pleistocene
	Terrace deposits
		Soil, silty, hard brown	5	7
		Silt, dark brown	2	9
		Silt, clayey, brown	3	12
		Clay and silt, limy; tan	48	60
		Clay, tan to gray	5	65
		Sand, coarse, and fine to coarse gravel	4	69
		Clay, tan	7	76
		Silt and clay, sandy; yellow-brown	27	103
Cretaceous--Gulfian
	Dakota formation
		Clay, gray, and red clay	2	105

Sample log of test hole 21-21-6abb in the NW NE sec. 6, T. 21 S., R. 21 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,182.1 feet.			Thickness, feet	Depth, feet
		Soil, silty, black	2	2
Quaternary--Pleistocene
	Terrace deposits
		Silt, light-brown	2	4
		Silt dark-brown	5	9
		Silt: light-brown	3	12
Cretaceous--Gulfian
	Greenhorn limestone
		Limestone, yellow	3	15

Sample log of test hole 21-21-6bcc in the SW NW sec. 6, T. 21 S., R. 21 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,156.7 feet.			Thickness, feet	Depth, feet
		Road fill, black silt	3	3
Quaternary--Pleistocene
	Alluvium
		Silt, brown	5	8
		Silt, tan	2	10
		Silt, clayey, light tan; contains thin rusty zone at 18 to 19 feet	18	28
		Sand, medium to fine; contains limestone pebbles at 34 to 35 feet	7	35
Cretaceous--Gulfian
	Dakota formation
		Clay, light-gray	1	36
		Clay and shale, limy; blue-black	4	40
		Clay, light-tan	5	45
		Clay, reddish-brown	7	52
		Clay, sandy; contains rusty material	18	70
		Clay, sandy; contains mottled red to gray clay	10	80
		Clay, mottled red to gray	5	85

Sample log of test hole 21-21-14cb in the SW cor. NW SW sec. 14, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,140.5 feet.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Terrace deposits
		Silt, sandy, loose, dark-brown	2	2
		Silt, brown to tan; contains very fine sand	3	5
		Silt, sandy, tan to buff; contains caliche	5	10
		Silt,tan	8	18
		Silt, tan to light-brown, contains very fine sand and some caliche	9	27
		Silt, sandy, reddish-brown; contains calcium carbonate fragments and nodules	15	42
		Silt, sandy, buff; contains fine gravel	13	55
		Silt, slightly sandy, buff	17	72
		Sand, medium to coarse; contains fine to medium gravel	10	82
		Silt, blue-gray	11	93
		Sand, medium to coarse; contains fine to coarse gravel	9	102
		Silt, sandy, buff	15	117
		Sand, fine to coarse	18	135
		Gravel, fine to coarse; contains coarse sand	17	152
Cretaceous--Gulfian
	Dakota formation
		Clay and shale, gray	18	170

Sample log of test hole 21-21-15aaa in the NE NE sec. 15, T. 21 S., R. 21 W., drilled by the State Geological Survey, October, 1947. Surface altitude, 2,134.0 feet; depth to water level, 24.0 feet, November 1, 1947.			Thickness, feet	Depth, feet
		Soil, black	2	2
Quaternary--Pleistocene
	Terrace deposits
		Silt, dark-brown	11	13
		Clay, brown	17	30
		Clay, silty, brown	37	67
		Sand, coarse, and fine gravel; contains silty brown clay	3	70
		Sand, coarse, and fine to medium gravel; contains limestone grains	10	80
		Gravel, fine to coarse, and some medium to coarse sand; contains silty brown clay	11	91
		Clay, sandy, brown	17	108
		Sand, coarse, and fine to medium gravel; contains silty brown clay	2	110
		Sand, coarse, and fine to coarse gravel; contains silty brown clay	10	120
Cretaceous--Gulfian
	Dakota formation
		Clay, brown; contains gray clay at 129 to 130 feet	10	130
		Clay, brown and gray	10	140

Sample log of test hole 21-21-15dd in the SE cor. SE SE sec. 15, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,135.4 feet.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Terrace deposits
		Silt, sandy, dark-gray to black	1.5	1.5
		Silt, sandy, brown	1	2.5
		Silt, sandy, grayish-brown	1.5	4
		Silt, sandy, reddish-brown; contains caliche	2	6
		Silt, yellow to tan	11	17
		Silt, sandy, tan to brown	13	30
		Silt, sandy, dark-brown to brown	7	37
		Silt, sandy, buff with reddish-brown streaks	5	42
		Silt, sandy, tan; contains brown sandy fragments	13	55
		Silt, sandy, tan to gray; contains cemented sand and shell fragments	7	62
		Gravel, fine to medium; contains sand and shell fragments	3	65
		Gravel, fine to coarse, dark blue-gray to green; contains dark-gray silt	5	70
		Silt, dark-gray	15	85
		Sand, fine, and light-gray silt	2	87
		Sand and gravel, fine to coarse	13	100
		Gravel, fine to coarse; contains fragments of sandstone	15	115
		Gravel, fine to coarse, contains one-half inch pebbles	7	122
Cretaceous--Gulfian
	Dakota formation
		Clay and shale; gray	8	130

Sample log of test hole 21-21-22ad in the NE cor. SE NE sec. 22, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,130.6 feet; depth to water level, 37.7 feet, December 13, 1946.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Terrace deposits
		Silt, sandy, dark-brown	2	2
		Silt, sandy, tan	4	6
		Silt, sandy, brown; contains caliche	2	8
		Silt, sandy, tan	7	15
		Silt, yellowish-tan to tan; contains caliche	7	22
		Silt, sandy, buff; contains fragments of sandstone	14	36
		Silt, sandy, grayish-tan to buff; contains fragments of sandstone	4	40
		Silt, sandy, light-gray with reddish-brown streaks	8.5	48.5
		Silt, sandy, grayish-brown with reddish-brown streaks	5.5	54
		Sand, very fine to fine; contains sandstone fragments and very sandy silt	6	60
		Sand, fine to coarse; contains fine gravel	7	67
		Silt, very sandy, clayey, gray	8	75
		Silt, dark-gray	9	84
		Sand, fine to coarse; contains fine to medium gravel and silt	8	92
		Gravel, fine to coarse; contains coarse sand	5	97
		Silt, sandy, brown	13	110
		Silt, buff, and fine to coarse gravel	2	112
		Gravel, fine to coarse; contains pebbles	8	120
		Sand, fine to coarse; contains fine to medium gravel	9	129
Cretaceous--Gulfian
	Dakota formation
		Clay and shale, light-gray to white; contains lignite in upper part	11	140

Sample log of test hole 21-21-22da in the SE cor. NE SE sec. 22, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,128.7 feet; depth to water level, 35.6 feet, December 13, 1946.			Thickness, feet	Depth, feet
		Top soil, silty, dark-gray to black	2	2
Quaternary--Pleistocene
	Terrace deposits
		Silt, buff	4	6
		Silt, sandy, tan to brown; contains caliche	8	14
		Silt, sandy, buff; contains caliche.	3.5	17.5
		Silt, tan; contains very fine sand and some gravel	2.5	20
		Silt, sandy, buff; contains caliche	6.5	26.5
		Silt, light-brown; contains caliche	7.5	34
		Silt, grayish-brown	2	36
		Silt, dark-gray	4	40
		Silt, sandy, light-gray	8	48
		Sand, fine to coarse; contains shell fragments	7	55
		Sand, medium to coarse, and fine to medium gravel	5	60
		Sand, fine to coarse	13.5	73.5
		Silt, dark blue-gray; contains sand and gravel	9	82.5
		Sand, fine to coarse; contains fine gravel	7.5	90
		Gravel and sand, fine to coarse	5	95
Cretaceous--Gulfian
	Dakota formation
		Sandstone, buff to dirty white	5	100

Sample log of test hole 21-21-23cc in the SW cor. SW sec. 23, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,120.5 feet; depth to water level, 27.6 feet, December 12, 1946.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, dark-gray	1.5	1.5
		Silt, sandy, tan	3.5	5
		Silt, yellowish-tan; contains caliche and sandstone fragments	7	12
		Silt, tan; contains sand from 16 to 20 feet	8	20
		Silt, sandy, brown	5	25
		Sand, fine to coarse	3	28
		Silt, gray	2	30
		Silt, dark-gray	4	34
		Silt, sandy, light-gray; contains sandstone fragments	2	36
		Gravel, fine to coarse, yellowish	3	39
		Gravel, fine to coarse; contains coarse sand and sandstone fragments	2	41
		Sand, fine to coarse; contains fine to medium gravel and sandstone	7	48
		Gravel, fine to coarse; contains coarse sand and pebbles up to one-fourth inch	2	50
		Sand, coarse; contains fine to medium gravel	8	58
		Gravel, medium to coarse, and one-half inch pebbles; contains yellow and gray silt and clay	3	61
		Silt, sandy, dark-gray; contains gravel	5	66
		Silt, very sandy, gray to light-gray; contains gravel	5.5	71.5
		Sand, fine to coarse; contains tan, buff, and gray silt	6.5	78
		Gravel, fine to coarse; contains medium to coarse sand	8.5	86.5
Cretaceous--Gulfian
	Dakota formation
		Clay and silt; yellow	1	87.5
		Clay and shale; light-gray to gray	2.5	90

Sample log of test hole 21-21-26bcc in the SW cor. SW NW sec. 26, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,122.6 feet.			Thickness, feet	Depth, feet
		Road fill, silty, dark-brown to dark-gray and black; contains particles of gravel	2	2
Quaternary--Pleistocene
	Alluvium
		Silt, tan to buff	2.5	4.5
		Silt, sandy, dark-gray	4	8.5
		Silt, sandy, tan	4.5	13
		Silt, sandy, grayish-brown	6	19
		Silt, sandy, tan and reddish-brown mottled	5	24
		Silt, sandy, dark-gray	3	27
		Silt, sandy, light-tan to buff	3	30
		Silt, sandy, dark-gray to black; contains shell fragments	3	33
		Silt, sandy, light-gray to white	5	38
		Silt, sandy, light blue-green; contains shell fragments,	6	44
		Sand and gravel, fine to coarse	16	60
		Sand, fine to coarse; contains fine to coarse gravel and tan silt	7	67
		Gravel, medium to very coarse; contains some onehalf inch pebbles	3	70
		Sand, fine to coarse, and fine to medium gravel; contains sandstone fragments	4	74
Cretaceous--Gulfian
	Dakota formation
		Shale, dark blue-gray	6	80

Sample log of test hole 21-21-26cbl in the NW cor. NW SW sec. 26, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,108.1 feet; depth to water level, 9.0 feet, December 11, 1946.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, dark-gray to black	2	2
		Silt, dark-brown; contains fine to medium gravel	5	7
		Silt and sand; contains shell fragments and gravel	1.5	8.5
		Sand, fine to coarse; contains shell fragments and gravel	5.5	14
		Silt, black; contains shell fragments	2.5	16.5
		Silt and clay, light greenish-gray	6.5	23
		Gravel, fine to coarse; contains medium to coarse sand	7	30
		Sand, fine to coarse; contains very fine to fine gravel	10	40
		Sand, very fine to fine, yellow	5	45
		Gravel, fine to coarse; contains coarse sand	10	55
		Silt, sandy, dark gray; contains shell fragments	1	56
		Gravel, fine to coarse, and fine to coarse sand	11	67
Cretaceous--Gulfian
	Dakota formation
		Sandstone, gray	10	77

Sample log of test hole 21-21-26cb2 in the SW cor. NW SW sec. 26, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,122.9 feet; depth to water level, 31.7 feet, December 11, 1946.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, sandy, dark-brown to dark-gray and black	3	3
		Silt, sandy, buff	2	5
		Silt, dark-brown to dark-gray	2	7
		Silt, sandy, brown with reddish-brown streaks	3	10
		Silt, sandy, buff	2	12
		Silt, sandy, brown	3	15
		Silt, sandy, tan	11	26
		Silt, sandy, grayish-brown; contains few caliche nodules	4	30
		Silt, sandy, gray; contains Recent shell fragments	4	34
		Silt, sandy, buff to gray; contains sand and gravel	2	36
		Silt, sandy, buff to light-tan	2	38
		Silt, sandy, blue-green	2	40
		Sand, fine to coarse; contains fine to medium gravel	14	54
		Gravel, fine to medium; contains coarse sand	5	59
		Sand, very fine to medium	8	67
		Sand and dark blue-gray silt	3	70
		Sand, very fine to medium; contains fine gravel	8	8
		Silt, sandy, buff	8	86
		Sand and gravel; contains sandstone fragments	7	93
		Sandstone, reddish-brown	5.5	98.5
Cretaceous--Gulfian
	Dakota formation
		Clay and shale, gray to blue-gray	1.5	100

Sample log of test hole 21-21-26cc in the SW SW sec. 26, T. 21 S., R. 21 W., drilled by the State Geological Survey, December, 1946. Surface altitude, 2,120.2 feet; depth to water level, 27.4 feet, December 3, 1946.			Thickness, feet	Depth, feet
		Road fill, silty, dark-gray to black; contains sand and gravel	1.5	1.5
Quaternary--Pleistocene
	Alluvium
		Silt, dark-gray	1.5	3
		Silt, dark-brown to grayish-brown.	2	5
		Silt, buff; contains caliche	2	7
		Silt, sandy, buff to brown	6	13
		Silt, light grayish-brown to tan	7	20
		Silt, brownish-gray to gray	3	23
		Silt, sandy, buff	2.5	25.5
		Silt, dark-gray to black	1.5	27
		Silt, gray; contains shell fragments	3	30
		Silt, blue-gray to greenish-gray; contains sand at 35 feet	7	37
		Sand, very fine to medium; contains fine gravel	8	45
		Gravel, fine to medium; contains medium to coarse sand	10	55
		Gravel, fine to coarse; contains coarse sand	4	59
		Silt, buff, and medium to coarse gravel	6	65
		Gravel, fine to coarse, and coarse sand	10	75
		Gravel, fine to very coarse, yellow, and sand, contains fine to coarse sandstone	13.5	88.5
Cretaceous--Gulfian
	Dakota formation
		Sandstone, white to light-buff	6.5	95

Sample log of test hole 21-21-34dd in the SE cor. SE SE sec. 34, T. 21 S., R. 21 W., drilled by the State Geological Survey, November, 1946. Surface altitude, 2,118.9 feet; depth to water level, 27.8 feet, November 21, 1946.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, sandy, dark-gray to black	3	3
		Silt, sandy, brown	3	6
		Silt, sandy, tan to light-brown	10	16
		Silt, sandy, grayish-brown	4	20
		Silt, dark brownish-gray	6	26
		Silt, sandy, gray to light-gray	2	28
		Sand, fine to coarse; contains fine to medium gravel, gray to dark-gray silt, and Recent shell fragments	2	30
		Gravel, fine to medium, yellow to tan; contains medium to coarse sand and shell fragments	6	36
		Gravel, fine to medium, and medium to coarse sand; green; contains shell fragments	11	47
		Sand, medium to coarse, and fine gravel; gray; contains gray silt	3	50
		Sand, medium to coarse, and fine to medium gravel; yellow; contains shell fragments	6	56
		Clay and silt	6	62
		Clay and silt, dark-gray	3	65
		Clay and silt; light blue-gray; contains shell fragments and gravel	10	75
		Sand and gravel, fine to coarse	5	80
		Sand and gravel, fine to coarse; contains sandstone fragments	10	90
		Sand, very fine to medium	12	102
Cretaceous--Gulfian
	Dakota formation
		Clay, light-gray to white	8	110
		Sandstone, gray to white; contains fragments of charcoal	20	130

Sample log of test hole 21-21-35bc in the NW cor. SW NW sec. 35, T. 21 S., R. 21 W., drilled by the State Geological Survey, November, 1946. Surface altitude, 2,117.8 feet; depth to water level, 26.8 feet, November 27, 1946.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, sandy, dark-brown	3	3
		Silt, sandy, brown to tan	7	10
		Silt, grayish-brown; contains sand	8	18
		Silt, sandy, tan to brown	2	20
		Silt, dark-gray	2	22
		Silt, sandy, gray	2	24
		Silt, dark-gray	4	28
		Silt, gray	2	30
		Silt, blue-gray; contains sand	3	33
		Sand, fine to coarse; contains fine to medium gravel	7	40
		Gravel, fine to coarse; contains silt and coarse sand	5	45
		Sand and gravel, fine to coarse	10	55
		Sand, dark-gray; contains fine to medium gravel and gray silt	5	60
		Gravel, fine to coarse; contains medium to coarse sand and fragments of limestone and sandstone	5	65
		Clay, shaly, blue-gray	6.5	71
		Gravel, fine to coarse; contains pebbles and medium to coarse sand	10.5	82
Cretaceous--Gulfian
	Dakota formation
		Sandstone, white to tan	8	90

Sample log of test hole 21-21-35cb in the SW cor. NW SW sec. 35, T. 21 R. 21 W., drilled by the State Geological Survey, November, 1946. Surface altitude, 2,116.5 feet; depth to water level, 24.9 feet, December 1946.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, dark-gray to black	3	3
		Silt, sandy, dark-brown	2	5
		Silt, sandy, brown to tan; contains caliche	5	10
		Silt, dark-brown	3	13
		Silt, sandy, tan to buff	3	16
		Silt, grayish-brown	2	18
		Silt, sandy, reddish-brown	2	20
		Silt, gray; contains sand	3	23
		Silt, sandy, light-gray	3	26
		Sand, very fine to fine, tan	9	35
		Gravel, fine to medium; contains coarse greenish sand and shell fragments	5	40
		Sand, fine to coarse, and fine to medium gravel; contains silt	10	50
		Sand, medium to coarse, and fine to medium gravel; contains shell fragments	12	62
		Sand, very fine to medium, gray; contains gray silt and shell fragments	4	66
		Sand, very fine to medium, tan; contains shell fragments	8	74
		Sand, fine to coarse, and fine to medium gravel; contains sandstone and "ironstone"	16	90
		Sand, fine to very fine; contains gravel	10	100
Cretaceous--Gulfian
	Dakota formation
		Clay, white, gray, and red	16	116
		Clay, sandy, white to light-gray	4	120

Sample log of test hole 21-22-11dcc in the SWSE sec. 11, T. 21 S., R. 22 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,189.4 feet.			Thickness, feet	Depth, feet
		Soil, dark-brown	1	1
Quaternary--Pleistocene
	Terrace deposits
		Silt, brown	9	10
		Silt, clayey, light-tan	7	17
		Silt, clayey, yellow-brown; contains Greenhorn pebbles	3	20
Cretaceous--Gulfian
	Greenhorn limestone
		Limestone, hard and soft layers	6	26

Sample log of test hole 21-22-12baa in the NE NW sec. 12, T. 21 S., R. 22 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,150.0 feet; depth to water level, 28.7 feet, November 18, 1947.			Thickness, feet	Depth, feet
		Road fill, black silt	2	2
Quaternary--Pleistocene
	Alluvium
		Silt, dark-brown	4	6
		Silt, brown	14	20
		Silt, tan	12	32
		Clay, greenish-gray	5	37
		Gravel, fine to coarse, and medium to coarse sand	3	40
		Sand, medium to coarse, and fine to coarse gravel; contains greenish clay	12	52
		Sand, medium to coarse, fine gravel, and light-green clay; contains medium to coarse gravel	18	70
		Sand, medium to coarse, fine and some medium to coarse gravel and yellow-brown to light-green clay; contains mottled red to gray clay at 98 to 100 feet	30	100
Cretaceous--Gulfian
	Dakota formation
		Clay, red to gray; contains coarse gravel	5	105
		Clay, mottled red to gray	5	110

Sample log of test hole 21-22-12cbb in the NW SW sec. 12, T. 21 S., R. 22 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,156.3 feet; depth to water level, 29.5 feet, November 13, 1947.			Thickness, feet	Depth, feet
		Soil, black	3	3
Quaternary--Pleistocene
	Alluvium
		Silt, brown	22	25
		Silt, light-tan	4	29
		Sand, coarse, and fine to medium gravel; contains medium sand and coarse gravel	11	40
		Sand, coarse, and fine to coarse gravel	13	53
		Sand, medium to coarse, and fine gravel	7	60
		Gravel, fine to coarse; contains gray clay at 65 to 70 feet	10	70
Cretaceous--Gulfian
	Dakota formation
		Clay, gritty, gray	10	80
		Clay, gray, and some yellow clay	20	100
		Clay, sandy, gray	7	107
		Sandstone, fine, brown	5	112
		Sandstone, fine, and clay; gray	6	118
		Clay, light-gray; contains brown clay at 122 to 130 feet	12	130

Sample log of test hole 21-23-6bbb in the NW NW sec. 6, T. 21 S., R. 23 W., drilled by the State Geological Survey, November, 1947. Surface altitude, 2,233.0 feet; depth to water level, 30.8 feet, November 26, 1947.			Thickness, feet	Depth, feet
Quaternary--Pleistocene
	Alluvium
		Silt, black	1	1
		Silt, clayey, tan	4	5
		Silt, clayey, olive drab	17	22
		Silt, tan	5	27
		Sand, very fine, and silt	6	33
		Sand, coarse, fine to coarse gravel, and some one-half to one inch gravel; contains yellow-brown clay at 38 to 40 feet	7	40
		Gravel, coarse to fine, and coarse sand; contains white clay	11	51
		Silt and sand, fine, limy, white	11	62
		Silt and sand, fine, light-gray	3	65
		Sand, fine, and silt	7	72
		Silt and sand, fine, white	3	75
		Gravel, coarse to fine, and coarse sand; contains white clay at 78 to 80 feet	7	82
		Sand, coarse, and fine to coarse gravel	1	83
Cretaceous--Gulfian
	Dakota formation
		Shale, noncalcareous, blue-gray; contains lignite and pyrite	7	90
		Shale, blue-gray; contains lignite	10	100

T. 20 S. || T. 21 S. || T. 22 S. || T. 23 S.

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Kansas Geological Survey, Geohydrology
Placed on web May 31, 2012; originally published April 1952.
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