28 PROGRESS REPORT, HYDROGRAPHY, 1893 AND 1894. [bull. 131. 
PLATTE BASIN, IN WYOMING, COLORADO, AND NEBRASKA. 
This basin has been described quite fully in the Thirteenth Animal 
Report of the Survey, Part III, Irrigation, pages 73-91. Measure- 
ments have been made on the headwaters of this river, mainly by Prof. 
Elwood Mead, State engineer of Wyoming; and in Colorado, by the 
State engineer, and by Prof. L. G. Carpenter, meteorologist and irriga- 
tion engineer of the State experiment station at the State Agricultural 
College. In 1894 work was begun in Nebraska by cooperation with 
Mr. O. V. P. Stout, professor of civil engineering at the University of 
Nebraska, and a number of stations were established, as shown by the 
following descriptions. 
WOODS LANDING STATION, ON LARAMIE RIVER, WYOMING. 
The station at Woods Landing was established in December, 1888, by 
Prof. Elwood Mead, observations being continued during the months 
from April to September, inclusive, in 1889, 1890, and 1891. 1 Below 
this point a large number of ditches divert the water of Laramie Eiver, 
so that during the irrigating season very little crosses the Laramie 
plains or reaches Laramie. The report of the State engineer shows that 
fifty-three ditches have filed claims to water, the total area described 
as under these ditches being 150,000 acres. A few measurements have 
been made of the amount of water passing Laramie. One of these on 
September 27, 1891, gave 27 second-feet. Beyond this point the river 
flows in a northerly direction for about 50 miles, and then turns easterly 
through the Laramie Hills. Near this point are the head works of the 
Wyoming Development Company's irrigation system, which divert 
water by means of a stone dam. The canal heading at this point 
passes through a tunnel 3,100 feet in length, and finally empties into 
Bluegrass and Sybiile creeks, whence the water is again diverted for 
use in the vicinity of Wheatland. The amount of water which passes 
this stone dam or returns below to the river by seepage has been meas- 
ured at the railroad crossing at Uva. 
UVA STATION, ON LARAMIE RIVER, WYOMING. 
Measurements of river flow were made at the railroad crossing at Uva, 
Wyo., on June 6, 1894, showing a discharge of 1,845 second feet, and 
again on October 24, 1894, giving only 14 second-feet. At about this 
latter date a gage rod was established at this point and observations 
were begun. The gage is vertical, and is nailed to the center pier of 
the railroad bridge at Uva. At a distance of about 25 miles below this 
J See Twelfth Annual Report United States Geological Survey, Part II, Irrigation, p. 239; Thir- 
teenth Annual Report United States Geological Survey, Part III, Irrigation, pp. 79 and 80; First 
Biennial Eeport of the State Engineer to the Governor of Wyoming, 1891 and 1892, Cheyenne, Wyo., 
1892, Appendix, pp. xviiiandxx; Second Biennial Eeport of the State Engineer to the Governor of 
Wyoming, 1893 and 1894, Cheyenne, Wyo., 1891, p. 135. 
