76 
LARAMIE BASIN, WYOMING. 
Rice Spring is situated in the S. J sec 26, T. 13 N., R. 75 W. It 
flows from the Chugwater formation not far above the gypsum hori- 
zon. The water at the spring is good and it is used for domestic and 
stock purposes. Half a mile or so below the spring the stream be- 
comes so badly contaminated with gypsum that fish can not live in it, 
though they thrive near the spring. 
Boswell Spring, located in sec. 31, T. 23 N., R. 74 W., rises in red 
beds near the top of the Casper formation; the quality of the water 
is good and the flow is about one-third cubic foot. 
Water of notable purity is found in a spring on Ernest Davis's 
ranch near Sheep Mountain; an analysis is given below. 
In the southeastern part of sec. 14, about a mile north of Soldier 
Springs, a spring of soft water issues from a dark-red limy sandstone. 
Formerly this spring supplied a small pond and running stream, but 
now the water level is several feet below the surface. A small lake, 
which formerly existed on the NE. \ sec. 14, a mile southeast of the 
fair grounds, dried up at the same time that the water level fell in the 
spring, indicating a change in underflow conditions. 
A large spring of pure mountain water breaks out on the J. J. Hays 
ranch, on the western margin of the Centennial Valley. It flows 
away in a stream 2 feet deep and 3 feet wide and is the chief source of 
Middle Fork of Little Laramie River. 
WATER ANALYSES. 
The following are the available analyses of the waters of the Lara- 
mie Basin: 
Analyses of waters in Laramie Basin. a 
[Parts per 
thousand. 
1. 
2. 
3. 
4. 
5. 
6. 
Silica 
0. 0072 
.0015 
.0014 
. 0085 
.0432 
.0094 
.0106 
.0608 
0. 0257 
.0014 
.0102 
.0196 
.2660 
.1060 
.4380 
. 1032 
0. 0087 
.0040 
.0012 
.0047 
.0668 
, 0260 
. 0053 
.1474 
Trace. 
.0042 
0. 0163 
.0008 
.0023 
.0133 
.0643 
. 0361 
.0129 
.1326 
Trace. 
.0137 
0. 0388 
0. 0674 
.0048 
Potash 
.0176 
.6471 
.3280 
.2896 
1. 7361 
.0620 
.0041 
.0834 
.0022 
.0210 
Lime 
.0411 
.0083 
Sulphuric acid 
.0197 
.0428 
Lithia 
Hydrochloric acid 
. 0066 
.2683 
.0010 
.2923 
.0031 
3. 2067 
.0188 
&.3889 
.0015 
.1426 
.9701 
.2673 
.2892 
3. 1879 
.3874 
a Slosson, E. E., Bull. Univ. Wyoming, Nos. 24, 45. 
b Including 0.1750 insoluble. 
