104 PROGRESS REPORT, HYDROGRAPHY, 1893 AND 1894. [bull. 131. 
supply, for 140 head of stock, and is capable of watering 500 head. Strata passed 
through : Sand and gravel. This well is three-quarters of a mile from the river and 
was not affected by the June freshet. 
No. 79. — Drilled well. This is not a successful well because of the sand drawing 
in and hindering the supply of water. Water raised by wind pump with 14-foot 
wheel. Strata passed through: Soil, 4 feet; yellow clay (the plains marl), and the 
usual magnesia and gravel of this plateau. The marl is about 100 feet. 
No. 80. — Driven well; depth of water varies with the height of the river, which is 
40 rods distant; water can be obtained from the well all day and night; can not be 
easily lowered; quality of water, hard; water raised by hand pump; is used for 
domestic supply. Strata passed through : River alluvia. 
No. 81. — Drilled well. Broken casing and bad workmanship have rendered this 
well useless. Depth of water does not vary; could not be easily lowered; quality of 
water, medium hard ; water raised by wind pump with 14-foot wheel. Strata passed 
through: Soil, 4 feet; yellow, limy, or gray, soil (the marl), 120 feet; white mag- 
nesia, yellow magnesia, gravel, and coarse sand with the water. This well is within 
40 rods of the top of the plains marl bluffs, whose precipitous fronts begin the descent 
to the North Platte, the bed of which is over 500 feet below. 
No. 82. — Driven well; depth of water does not vary; can not be easily lowered; 
quality of water, medium hard; water raised by hand pump; is used for domestic 
supply and for 25 head of cattle. Strata passed through : River alluvia. This well 
is on the North Platte bottom. 
No. 83. — Bored well; depth of water does not vary ; 10 gallons per minute; can be 
lowered by rapid pumping; quality of water, hard; water raised by hand pump 
with 3-inch cylinder; is used for domestic supply, and has irrigated a city block 250 
feet square. Strata passed through : River alluvia. This well seems to have been 
affected by the freshet in the river last June, as the water is raised with less diffi- 
culty than formerly. 
No. 84. — Dug well; slightly lowers with pumping, and varies with the water in 
the South Platte, from which it is distant between 60 and 70 rods; 6,000 gallons per 
hour for 6 hours can be obtained from the well, this rilling the tank, and at the same 
time lowering the well; quality of water, not very hard; slightly alkaline; water 
raised by steam pump ; is used for railway purposes. Strata passed through : Sandy 
alluvia. 
No. 85. — Bored well ; depth of water does not vary ; can not be easily lowered ; 
quality of water, soft ; water raised by wind pump with 10-foot wheel ; is used for 
domestic supply and for 50 head of stock. Strata passed through : Soil, 2 feet ; fine 
yellow sand (plains marl), 18 feet ; water in gravel. This well is on the second slope 
to the river, which is three-quarters of a mile to the north. 
No. 86. — Driven well; depth of water does not vary; can not be easily lowered; 
quality of water, not very hard; water raised by wind pump; water used for domes- 
tic supply and for 200 head of stock. Strata passed through : River alluvia. This, 
well is near the river. A water hole one-quarter of a mile north of the well had water 
by percolation after the June freshet. 
No. 87. — Drilled well ; depth of water does not vary ; can not be easily lowered ; 
quality of water, not very hard ; water raised by wind pump with 12-foot wheel ; is 
used for domestic supply and for stock. Strata passed through: Soil, 3 feet; sand; 
magnesia ; gravel rock, 2 feet ; gravel with water. 
No. 88. — Bored well ; depth of water does not vary; 75 to 100 barrels per day; can 
not be easily lowered; quality of water, rather soft; water raised by wind pump 
with 10-foot wheel ; is used for domestic supply, for 50 head of stock, and for irrigat- 
ing H acres. Strata passed through : Soil, 3 feet ; fine magnesia sand (plains marl?), 
5 feet; clay and sand, 4 feet; gravel and sand, 35 feet. 
No. 89. — Tubular well; depth of water does not vary; 20 barrels in 4 hours; can 
not be easily lowered; quality of water, soft; water raised by wind pump with 
