Back to Permeability

Table of Contents

Abstract

Introduction

Geography

Geology

Geologic History

Ground Water

Utilization

Quality of Water

Geologic Formations

Records of Typical Wells

Logs of Test Holes

References

Plates

Table 4

Well number and/or location	Water-bearing formation	Length of time well was pumped (minutes)	Average discharge of well during test (gallons a minute) (g)	Specific capacity (gallons a minute per foot of drawdown)	Correction applied to t (c)	Coefficient of transmissibility	Approximate thickness of water-bearing beds	Coefficient of permeability (1) (Pf)
Well 454, NW NW sec. 10, T. 26 S., R. 28 W.	Alluvium	225	592	35	-210	38,200	37	1,030
Well 160, SW SE sec. 36, T. 23 S., R. 34 W.	Alluvium and undifferentiated Pliocene and Pleistocene deposits	170	1141	32	-95	64,000	160	400
Well 450, SE cor. NW sec. 17, T. 26 S., R. 27 W.	Alluvium and undifferentiated Pliocene and Pleistocene deposits	210	970	46	500	154,185	148	1,040
U.S. Army well, NW NW SW sec. 27, T. 24 S., R. 31 W. (2)	Undifferentiated Pliocene and Pleistocene deposits	307	441	33	325	47,500	120	395
U.S. Army well, NE NW SE sec. 27, T. 24 S., R. 31 W. (2)	Undifferentiated Pliocene and Pleistocene deposits	338	272	12	-170	27,000	116	235

1. The temperature of the ground water in Finney and Gray counties ranges from 57 deg. to 62 deg. F. Corrections for temperature have been omitted because they would not materially alter the results.
2. Well drilled after the field investigation was completed.

Back to Permeability