Kansas Geological Survey, Irrigation Series 5, originally published in 1979
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Supplemental Data

Index Maps

This investigation is a part of a continuing study of the ground-water resources of Kansas that began in 1937. The cooperative program is being conducted by the Kansas Geological Survey and the U.S. Geological Survey, with the support of the Division of Water Resources, Kansas State Board of Agriculture, and the Division of Environment, Kansas Department of Health and Environment. The present status of the ground-water investigations in Kansas is shown in figure 12. The numbers and letters on the map refer to reports published by the Kansas Geological Survey and to reports published by the U.S. Geological Survey.

Figure 12--Area described in this report and other areas for which reports are available or are in preparation.

Selected Geohydrologic and Chemical-Quality Data

The hydrographs of 24 observation wells in the Dakota Formation (fig. 13) show the water-level changes in selected wells in Hodgeman and northern Ford Counties (locations shown in figure 7). These hydrographs illustrate the different seasonal fluctuations resulting from ground-water withdrawals in areas of confined and unconfined aquifer conditions and the gradual long-term water-level declines owing to the reduction in ground-water storage.

Figure 13--Hydrographs for selected wells in Dakota Formation.

Table 4 lists the records of 94 selected wells that obtain most or all of their water supply from the Dakota Formation. Listed are records of 62 irrigation wells, 5 public-supply wells, 20 domestic wells, and 7 unused wells where water levels are measured.

Table 4--Records of selected wells.

Table 5 lists the logs of 14 test holes drilled by the Kansas Geological Survey (locations shown in figure 7). Altitudes are referenced to mean sea level datum and are reported to the nearest foot. Depth of all holes and depth to water in two cased wells are reported in feet below land surface.

Table 5--Logs of test holes.

21-21W-34ADA--Drilled October 17, 1972. Altitude 2,121 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
		Alluvium
			Clay, dark-brown	3	3
			Clay, medium-brown	1	4
			Clay, light-brown	4	8
			Clay, dark-brown	2	10
			Clay, medium-brown	4	14
			Clay, light-brown	6	20
			Sand and clay streaks	10	30
			Sand, fine to coarse, brown, and fine to medium gravel; contains gray clay streaks	32	62
			Sand, fine to medium, loose, gray, with a few very thin clay streaks	10	72
			Sand, fine, silty, brown	3	75
			Sand, fine to medium, loose, brown	7	82
Cretaceous System
	Lower Cretaceous Series
		Dakota Formation
			Sandstone, fine-grained, slightly cemented, tan	13	95
			Sandstone, fine-grained, yellow-orange	5	100
			Clay, gray	18	118
			Clay, red	2	120
			Clay, sandy, gray and red	10	130
			Clay, gray and red, with a few thin hard layers	65	195
			Clay, dark-gray, light-gray, and red	10	205
			Clay, slightly sandy, light-gray	2	207
			Clay, light-gray, dark-gray, and red, with thin hard streaks	3	210
			Clay, dark-gray and red, with gray thin hard sandstone layers	25	235
		Kiowa Formation
			Clay, dark-gray, with thin hard layers	20	255
			Clay, sticky, gray, with a few thin hard layers	45	300
			Clay, sticky, gray, with a few thin hard layers; contains shell material	15	315
			Clay, sticky, gray, and hard gray clay; contains a few very thin hard streaks	15	330
			Clay, dark-gray, with a few gray and black thin shale layers and gray hard sandstone layers	67	397
		Cheyenne Sandstone
			Clay, very slightly sandy, green	5	402
			Clay, green turning to red with depth	17	419
Permian System
		Undifferentiated red beds
			Clay, red	15	434

21-22W-26BBB--Drilled October 19, 1972. Altitude 2,260 feet.				Thickness, in feet	Depth, in feet
Quaternary and Tertiary Systems
	Pleistocene and Pliocene Series, undifferentiated
			Topsoil, dark-brown	2	2
			Silt, sandy, tan, with limestone chips as large as 6 inches in diameter	5	7
Cretaceous System
	Upper Cretaceous Series
		Greenhorn Limestone
			Limestone, and yellow and white clay	3	10
			Shale, light-tan and white, with light-yellow and white limestone layers	5	15
			Shale, yellow, and white limestone layers; contains a few dark-gray thin shale layers	20	35
			Shale, black, and light- to dark-gray limestone	20	55
			Shale, black, and light-gray limestone	4	59
			Bentonite, light-gray	1	60
			Shale, black, and light-gray limestone	15	75
		Graneros Shale
			Shale, black	10	85
			Bentonite, light-gray	1	86
			Shale, black; contains a few hard layers	24	110
	Lower Cretaceous Series
		Dakota Formation
			Clay, sticky, gray, with gray thin hard silty sandstone layers	35	145
			Clay, very light gray, and yellow and red clay	10	155
			Clay, very light gray, and light-tan clay	25	180
			Clay, very light gray, and red clay	15	195
			Clay, red, very light gray, and yellow	15	210
			Clay, very light gray and red	15	225
			Clay, very light gray, red, and yellow	47	272
			Clay, pale dusky-red, with lignite streaks	16	288
			Clay, light-gray, and light-gray very fine grained sandstone	12	300
			Clay, very light gray, red, and yellow	15	315
			Clay, light-gray and red	30	345
			Clay, gray and red, with some ironstone layers and a small amount of sand	20	365
			Clay, red	5	370
			Clay, dark-gray, light-gray, and red	20	390
			Clay, dark-gray, black, light-gray, green, and red; contains thin lignite beds and a small amount of pyrite	17	407
			Sandstone, fine-grained, gray	3	410
		Kiowa Formation
			Clay, dark-gray, with hard layers	6	416
			Sandstone, fine-grained, gray	5	421
			Clay, dark-gray, with thin hard layers	35	456
			Clay, dark-gray, with thin hard layers; contains small shell fragments	6	462
			Clay, dark-gray	24	486
			Clay, dark-gray, with very hard layers	12	498
			Shale, black, with light-gray shale; con-tains very hard layers and numerous large shell fragments	14	512
			Shale, hard, black	49	561

22-23W-27BAA--Drilled September 9, 1972. Altitude 2,335 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
			Clay, brown	5	5
			Clay, limy, tan	3	8
Cretaceous System
	Upper Cretaceous Series
		Greenhorn Limestone
			Clay, gray to yellow (weathered shale)	3	11
			Clay, gray to yellow, and gray to yellow limestone	6	17
			Bentonite, light gray	1	18
			Clay, gray to yellow, and gray to yellow limestone	9	27
			Clay, red	1	28
			Clay, gray to yellow, and gray to yellow limestone	16	44
			Shale, hard, gray, and orange bentonite	1	45
			Shale, gray, and gray limestone	10	55
			Shale, black, with thin limestone layers	3	58
			Bentonite, orange to white, and black shale	1	59
			Shale, hard, black, and gray limestone	59	118
		Graneros Shale
			Bentonite, pale-gray, dark-green shale and gray and black shale	2	120
			Shale, gray to black, with thin hard limestone and sandstone layers	51	171
	Lower Cretaceous Series
		Dakota Formation
			Clay, gray	9	180
			Clay, carbonaceous, dark- to very dark gray, with a few lignite streaks	12	192
			Sandstone, very fine grained, silty, light-gray and dark-gray clay	16	208
			Lignite	1	209
			Clay, sandy, gray, with lignite streaks	16	225
			Clay, gray	10	235
			Clay, gray and red	12	247
			Sandstone, fine- to medium-grained, hard, brown	3	250
			Clay, sandy, brown, and lignite	5	255
			Clay, gray, brown sandstone, brown clay, and a few streaks of lignite	43	298
			Clay, red and gray, with brown sandstone layers	104	402
			Clay, dark-gray	5	407
			Clay, dark-gray, red, and green	4	411
			Clay, dark-gray and red, with sandstone and ironstone layers	39	450
		Kiowa Formation
			Clay, dark-gray, with hard layers	77	527

22-24W-16ADB2--Drilled September 18, 1972. Altitude 2,465 feet.					Thickness, in feet	Depth, in feet
Quaternary and Tertiary Systems
	Pleistocene and Pliocene Series, undifferentiated
				Clay, dark-brown	4	4
				Clay, yellow-green	6	10
				Clay, brown, with thin fine sand layers	9	19
				Caliche, granular, white	3	22
				Clay, hard, brown, with caliche and fine to medium sand	16	38
				Sand, fine, lime-cemented, tan and pink to brown, with thin hard clay layers	7	45
				Clay, pink to tan, with a few thin sand and caliche layers	20	65
Cretaceous System
	Upper Cretaceous Series
		Carlile Shale
			Fairport Chalk Member
				Clay, yellow to yellow-orange, gray, and white	16	81
				Clay, dark-gray to dark-brown, with white bentonite streaks	4	85
				Shale, black, with light-gray bentonite layers	5	90
				Shale, black, with thin moderately hard layers; contains bentonite and a few shells	47	137
		Greenhorn Limestone
				Shale, gray to black, with dark-gray limestone layers	23	160
				Shale, gray to black, with gray fossiliferous limestone layers and light-gray bentonite layers	20	180
				Shale, gray to black, with gray limestone layers	75	255
		Graneros Shale
				Shale, black, with very dark gray thin limestone layers	15	270
				Shale, black, with very dark gray thin sandstone layers	15	285
	Lower Cretaceous Series
		Dakota Formation
				Clay, dark-gray	15	300
				Shale, light-gray to black, with thin lignite layers	45	345
				Sandstone, fine- to very fine grained	50	395
				Shale, black, and fine-grained sandstone	40	435
				Sandstone, very fine to medium-grained	30	465
				Sandstone, with thin hard layers	15	480
				Sandstone, fine- to medium-grained, with a few very soft and a few very hard layers	80	560
				Shale, black, red, and gray	5	565

23-21W-16DDD--Drilled October 13, 1973. Altitude 2,345 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
			Topsoil, dark-brown	1	1
			Silt, light-tan	5	6
Tertiary System
	Pliocene Series
		Ogallala Formation
			Caliche, white, and tan sandy silt	5	11
			Caliche, hard, white	2	13
Cretaceous System
	Upper Cretaceous Series
		Greenhorn Limestone
			Clay, white to yellow, with thin limestone layers	15	28
			Shale, black, with thin limestone layers	12	40
			Shale, black, with a thin bentonite layer	1	41
			Shale, black, with thin limestone layers	16	57
		Graneros Shale
			Bentonite, gray shale, and green shale	3	60
			Shale, black, with a few thin hard layers	29	89
			Limestone, brown	1	90
			Shale, black	11	101
	Lower Cretaceous Series
		Dakota Formation
			Clay, dark-gray	3	104
			Sandstone, very well cemented, brown	1	105
			Clay, dark-gray	16	121
			Clay, dark-gray and lignite	14	135
			Clay, sandy, dark-brown, with lignite streaks	20	155
			Clay, sandy, gray, and white siltstone	11	166
			Sandstone, brown to gray, and white clay	24	190
			Sandstone, brown, and white to red clay	25	215
			Sandstone, hard	2	217
			Sandstone and clay	10	227
			Clay, gray, white, black, and red, with a few sandstone streaks	37	264
			Clay, red	2	266
			Clay, gray, red, and black	34	300
			Clay, sandy, gray and red	30	330
			Sandstone, fine-grained, pink	30	360
			Sandstone, fine- to medium-grained, brown	20	380
			Sandstone, fine- to medium-grained, brown, with hard layers	15	395
		Kiowa Formation
			Clay, sandy, gray, with hard layers	12	407
			Clay, dark-gray, with thin hard layers	28	435
			Clay, dark-gray, with a few thin hard layers	39	474
			Clay, dark-gray, hard; contains shells and fish scales	2	476
			Clay, dark-gray, with thin hard layers	4	480

23-22W-7DAA--Drilled October 4, 1972. Altitude 2,239 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
			Topsoil, brown	1	1
Tertiary System
	Pliocene Series
		Ogallala Formation
			Clay, sandy, limy, tan, with tan clay layers	14	15
			Clay, sandy to gravel, limy, tan, with tan clay layers	13	28
			Clay, brown to gray-brown	2	30
Cretaceous System
	Lower Cretaceous Series
		Dakota Formation
			Clay, gray to red	11	41
			Clay, red	3	44
			Clay, gray, red, and yellow	10	54
			Sandstone, fine- to medium-grained, yellow	6	60
			Ironstone and gray clay	1	61
			Sandstone, yellow to brown	5	66
			Clay, gray to red and yellow, with fine-grained sandstone streaks	12	78
			Clay, gray to red and brown	12	90
			Clay, light-gray	5	95
			Clay, dark-gray	5	100
			Clay, light-gray	2	102
			Clay, gray and red	13	115
			Clay, gray	12	127
			Clay, very dark gray	5	132
			Clay, gray, with some red clay	3	135
			Clay, gray, with lignite layers	5	140
			Clay, gray, with some red clay	14	154
			Sandstone, gray	2	156
			Clay, carbonaceous, gray, with lignite	3	159
			Sandstone, fine-grained, yellow to brown	8	167
			Clay, gray and yellow	13	180
			Clay, gray, with a few hard streaks	12	192
			Clay, gray and red	34	226
			Clay, light-gray and red	11	237
		Kiowa Formation
			Clay and shale, dark-gray, light-gray, and red, with hard sandstone layers	90	327
			Shale, black	23	350
			Shale, black; contains shells	10	360
			Shale, black, with thin hard layers	60	420
		Cheyenne Sandstone
			Shale, sandy, gray to black, with thin hard layers	20	440
			Siltstone, white to light gray-green	5	445
Permian System
		Undifferentiated red beds
			Shale, red, with a few thin hard layers	37	482

23-24W-28BCC--Drilled September 25, 1972. Altitude 2,481 feet. Depth to water 199.02 feet (October 24,1972).				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
			Silt, slightly sandy, dark-brown	2	2
			Silt, sandy, limy, tan	4	6
Tertiary System
	Pliocene Series
		Ogallala Formation
			Caliche, sandy, silty in layers	15	21
			Silt, well-cemented, tan	4	25
			Silt, cemented, sandy, tan	10	35
			Sand, cemented, tan	2	37
			Silt, cemented, tan	2	39
			Sand, cemented, tan, and tan cemented silt with a small amount of clay; contains small gypsum (?) nodules and limestone pebbles	4	43
			Sand, fine to coarse, tan	5	48
			Sand, fine to coarse, brown, and fine to medium gravel	7	55
			Clay, yellow	1	56
			Silt, sandy, brown	12	68
			Silt, sandy, tan	5	73
Cretaceous System
	Upper Cretaceous Series
		Greenhorn Limestone
			Clay, white to yellow	3	76
			Clay, very dark brown	4	80
			Limestone (?), hard, black	1	81
			Shale, black, with gray thin limestone layers and a few thin bentonite layers	69	150
		Graneros Shale
			Shale, black, with a few thin limestone layers	42	192
	Lower Cretaceous Series
		Dakota Formation
			Clay, gray, with a few hard layers	18	210
			Clay, gray, with white silt layers and a few very thin sandstone layers	21	231
			Lignite	1	232
			Sandstone, very fine to fine-grained, gray to brown, with gray thin clay layers	8	240
			Sandstone, very fine grained, gray, with white silt and gray shale	22	262
			Sandstone	2	264
			Sandstone, hard	1	265
			Sandstone, takes water	5	270
			Sandstone, silty, light-gray, and light-gray clay with a small amount of red clay	35	305
			Sandstone	8	313
			Sandstone, very silty, light-gray, and light-gray clay	6	319
			Sandstone, hard	1	320
			Clay	6	326
			Sandstone	29	355
			Clay, dark-red, and sandstone; contains gray to white clay	14	369
			Clay, hard, light- to dark-gray, and gray very fine grained sandstone	25	394
			Clay, hard, light- to dark-gray, and very fine grained sandstone with lignite	2	396
			Sandstone, hard	1	397
			Clay, sandy, gray to light-gray; contains some clay	18	415
			Sandstone	1	416
			Clay, gray and light-gray, and sandy clay	28	444
			Clay, red to gray-green, maroon, and gray, with a hard layer at 462 feet	36	480
			Clay, red to gray-green and gray, with hard ironstone layers	16	496
		Kiowa Formation
			Clay, gray	8	504
			Clay, gray, with gray thin hard sandstone layers	36	540
			Shale, black, and gray clay with thin very hard shale layers	30	570

24-23W-3BCD--Drilled October 1972. Altitude 2,410 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
			Topsoil, brown	2	2
Tertiary System
	Pliocene Series
		Ogallala Formation
			Caliche and orange clay	3	5
			Caliche; contains hard and soft layers	8	13
			Silt, sandy, tan, and caliche	7	20
			Caliche, hard; contains a few hard silt and silty sand streaks	12	32
Cretaceous System
	Upper Cretaceous Series
		Greenhorn Limestone
			Limestone, white, and weathered tan to gray shale; lost circulation at 40 feet	8	40
			Shale, black	12	52
			Shale, black, with gray limestone and light-gray bentonite layers	38	90
		Graneros Shale
			Shale, dark-gray, with black oily shale streaks	30	120
	Lower Cretaceous Series
		Dakota Formation
			Clay, sticky, dark-gray	30	150
			Clay, gray, with thin well-cemented sandstone layers	35	185
			Clay, dark-gray	10	195
			Clay, light-gray, with a small amount of pink clay	15	210
			Clay, gray to red, with a few thin hard sandstone layers	50	260
			Lignite and dark-gray clay	10	270
			Clay, light-gray, with hard streaks	15	285
			Clay, brown, and lignite; contains tan and light-gray clay	15	300

25-23W-11CCC--Drilled August 5, 1968. Altitude 2,423 feet. Depth to water 98 feet.				Thickness, in feet	Depth, in feet
Tertiary System
	Pliocene Series
		Ogallala Formation
			Silt, pink, with fine sand and clay	10	10
			Sand, pink, very fine to fine, with silt, clay, and caliche	20	30
			Sand, very fine to medium, with some silt and clay	9	39
Cretaceous System
	Upper Cretaceous Series
		Greenhorn Limestone
			Shale, platy, black, with ledges of brown to black chalky limestone (streak of gray bentonite at 80 feet)	46	85
		Graneros Shale
			Shale, firm, light-gray	11	96
			Limestone, platy, black, with thin gray shale ledges	4	100
			Shale, light-gray, with thin black limestone ledges	9	109
			Ironstone, hard, black	1	110
			Shale, hard, light-gray, with thin brown to black chalky limestone ledges	17	127
			Shale, very hard, blocky, black	5	132
	Lower Cretaceous Series
		Dakota Formation
			Ironstone, hard, dark-gray	1	133
			Shale, sandy, tight, light-gray	9	142
			Shale, firm, very light gray, with brown and red streaks	14	156
			Shale, light-gray, with thin gray sandstone ledges	1	157
			Shale, tight, very light gray, with brown and red streaks	5	162
			Shale, tight, dark-gray, with brown and red streaks	22	184
			Ironstone, hard, gray, with thin gray shale streaks	4	188
			Shale, tight, gray, with brown, yellow, red, and black clay streaks	13	201
			Ironstone, silty, hard, dark-gray, with gray shale ledges	2	203
			Shale, tight, dark-gray, with red and yellow clay streaks	9	212
			Ironstone, silty, tightly cemented, gray	11	223
			Shale, very tight, gray	10	233
			Shale, silty and sandy, tight, gray	19	252
			Ironstone, hard, gray to tan, with sandy shale ledges	8	260
			Shale, very tight, dark-gray, with brown and red clay streaks	15	275
			Shale, sandy, tight, gray, with loose sandstone ledges	5	280
			Shale, yellow to gray, firm, with tan sandstone ledges	52	332
			Sandstone, silty, firm, gray, with gray to black shale ledges	33	365
			Sandstone, tan to light-gray, firm to loosely cemented ledges; contains a few black shale streaks	19	384
			Shale, hard, black	1	385

25-23W-12BBB--Drilled October 25, 1972. Altitude 2,390 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
			Soil, dark-brown	5	5
Tertiary System
	Pliocene Series
		Ogallala Formation
			Clay, sandy, orange, with caliche	8	13
			Sand, fine to coarse, and fine to medium gravel	27	40
Cretaceous System
	Upper Cretaceous Series
		Graneros Shale
			Limestone, white	1	41
			Clay, yellow to light-gray	2	43
			Shale, black, with dark-gray hard limestone layers	12	55
	Lower Cretaceous Series
		Dakota Formation
			Clay, sticky, very dark gray	20	75
			Clay, light-gray to dark-gray; contains some lignite	15	90
			Clay, light-gray	15	105
			Clay, light-gray and red	60	165
			Sandstone, fine- to medium-grained, brown; contains some ironstone	30	195
			Sandstone, fine-grained, with ironstone and some red to gray clay	7	202
			Sandstone, fine-grained, very loose	3	205
			Sandstone, fine- to medium-grained, brown, with ironstone and red to gray clay	30	235
			Clay, very sandy, red	5	240
			Clay, red and gray, with hard streaks	25	265
			Clay, very sandy, yellow	10	275
			Clay, gray and red, with hard streaks	8	283
			Clay, red	3	286
			Sandstone, fine- to medium-grained, hard, red to brown, with layers of red and gray clay	44	330
			Clay, red to gray	15	345
			Clay, dark-gray, with lignite streaks	17	362

26-22W-23BAA--Drilled August 22, 1972. Altitude 2,375 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
			Silt, brown	5	5
Cretaceous System
	Lower Cretaceous Series
		Dakota Formation
			Clay, soft, light-gray, with some brown iron-oxide-stained clay	10	15
			Clay, soft, light-gray, with thin ironstone streaks	25	40
			Clay, dark-gray, with several lignite layers 1-foot thick	15	55
			Clay, carbonaceous, dark-gray, with thin layers of lignite	20	75
			Clay, hard, gray to brown, and lignite layers (rough drilling)	15	90
			Clay, hard, brittle, brown, yellow, and gray	15	105
			Clay, hard, brittle, brown and yellow, with red mottled gray clay and gray slightly sandy clay	15	120
			Clay, sandy, gray, with ironstone and light-brown sandstone	15	135
			Sandstone, slightly cemented, with dark-brown ironstone streaks	13	148
			Clay, slightly sandy, light-gray and red	17	165
			Clay, hard to soft, light-gray, dark-gray, and red	30	195
			Clay, light- to dark-gray and red, with dark-brown sandstone streaks	30	225
			Sandstone, fine- to medium-grained, light-brown, with few clay streaks	18	243
			Clay, gray, yellow, dark-gray, and red, with a few sandstone streaks	27	270
			Clay, red, green, yellow, and gray, with very fine grained sandstone streaks	30	300
			Clay, gray, green, red, and dark-gray	40	340
			Clay, gray, with a small amount of red clay	20	360
		Kiowa Formation
			Clay, gray	48	408
			Shale, very hard, black	17	425

27-22W-8DDD--Drilled August 25, 1972. Altitude 2,416 feet.				Thickness, in feet	Depth, in feet
Quaternary System
	Pleistocene Series
		Dune sand
			Sand, fine, silty, tan	10	10
Tertiary System
	Pliocene Series
		Ogallala Formation
			Caliche, sandy, with gray clay; caved during drilling	5	15
			Caliche, sandy, and tan sandy clay	18	33
			Sand, fine to coarse, and fine to medium gravel	19	52
			Caliche	2	57
			Sand, silty, tan	5	62
			Clay, tan	4	66
			Sand, fine to coarse, and fine to medium gravel with clay layers	57	123
			Sand, fine to coarse, silty, brown, with a few hard layers	19	142
			Sand, fine to coarse, silty, brown, with many thin hard layers	8	150
			Sand, fine to very fine, well-cemented	8	158
			Sand, fine to coarse, silty, iron-stained	4	162
Cretaceous System
	Lower Cretaceous Series
		Dakota Formation
			Clay, yellow, brown, and gray, with ironstone layers	23	185
			Clay, gray	12	197
			Clay, gray and red, with sandstone and lignite streaks	19	216
			Clay, gray and red	23	239
			Clay, gray and red, with sandstone streaks	39	278
			Clay, gray and red	52	330
			Clay, gray, with a small amount of red clay	25	355
			Clay, light- to dark-gray, and red clay streaks with hard layers	35	390
			Clay, dark-gray	12	402
		Kiowa Formation
			Clay, dark-gray, with hard streaks	43	445
			Clay, dark-gray, with streaks of very fine grained silty slightly cemented sandstone	22	467
			Clay, dark-gray, with a few hard streaks	53	520
			Clay, dark-gray, with a few hard streaks; contains fish scales and a small amount of shell material	15	535
			Clay, dark-gray, and black very hard shale	45	580
			Shale, hard, black; contains a few gypsum crystals	15	595

27-22W-35AAD--Drilled July 18, 1972. Altitude 2,392 feet.				Thickness, in feet	Depth, in feet
Quaternary and Tertiary Systems
	Pleistocene and Pliocene Series, undifferentiated
			Topsoil, dark-brown	1	1
			Silt, sandy, light-tan	7	8
			Silt, limy, slightly cemented, and fine to medium sand	19	27
Cretaceous System
	Lower Cretaceous Series
		Dakota Formation
			Clay, yellow and gray	5	32
			Clay, gray, red, yellow, maroon, and brown, with a few thin ironstone layers	30	62
			Clay, moderately soft, dark-gray, with buff-tan and red clay	22	84
			Clay, soft, sticky, gray	8	92
			Clay, dark-gray, with a few hard streaks	17	109
			Clay, dark-gray	6	115
			Sandstone, very fine grained, light-gray, and light-gray clay with hard streaks	20	135
			Clay, dark-gray, with a small amount of lignite and gray thin sandstone streaks	5	140
		Kiowa Formation
			Clay, dark-gray, with thin streaks of very fine grained sandstone	115	255
			Clay, dark-gray; contains hard streaks of very fine grained sandstone and some shells and fish scales	15	270
			Clay, dark-gray, with thin hard sandstone layers	47	317
			Clay, dark-gray	13	330
			Shale, black	19	349
		Cheyenne (?) Sandstone
			Shale, black, with very fine grained sandstone and sandy shale layers	41	390
			Clay, light-gray	15	405
			Clay, light-brown to dark-buff	25	430
Permian System
		Undifferentiated red beds
			Clay, red-brown	20	450

Table 6 lists the chemical analysis of water samples from 67 wells that obtain their supply from the Dakota Formation (locations shown in figure 7). Analyses were made by the Kansas Department of Health and Environment.

Table 6--Chemical analyses of water from selected wells in the Dakota Formation.