OCR Text |
Show NORTH PLATTE RIVER LITIGATION 771 five per cent to Wyoming and seventy-five per cent to Nebraska, with the right granted Nebraska to designate from time to time the portion of its share which shall be delivered into the Inter-State, Fort Lara- mie, French and Mitchell Canals for use on the Nebraska lands served by these canals. The State of Nebraska, its officers, attorneys, agents and employees and the State of Wyoming, its officers, attorneys, agents and employees, are hereby enjoined and restrained from diversion or use contrary to this apportionment, provided that in the apportion- ment of water in this section the flow for each day, until ascertain- able, shall.be assumed to be the same as that of the preceding day, as shown by the measurements and computations for that day, and pro- vided further, that unless and until Nebraska, Wyoming and the United States agree upon a modification thereof, or upon another formula, reservoir evaporation and transportation losses in the seg- regation of natural flow and storage shall be computed in accordance with the following formula taken from United States' Exhibit 204A: Reservoir evaporation losses Seminoe, Pathfinder and Alcova Reservoirs.-Evaporation will be computed daily based upon evaporation from Weather Bureau Standard 4 foot diameter Class "A" pan located at Pathfinder Reservoir. Daily evaporation will be multiplied by area of water surface of reservoir m acres and by co-efficient of 70% to reduce pan record to open water surf ace. Guernsey Reservoir.-Compute same as above except use pan evaporation at Whalen Dam. River carriage losses River carriage losses will be computed upon basis of area of river water surface as determined by aerial surveys made in 1939 and previous years and upon average monthly evaporation at Pathfinder Reservoir for the period 1921 to 1939, inclusive, using a co-efficient of 70% to reduce pan records to open water surface. Daily evaporation losses in second-feet for various sections of the river are shown in the following table: River Section Area Daily Loss (Second-Feet) May June July Aug. Sept. Alcova to Wendover. . 8,360 53 76 87 76 56 Guernsey Res. to Whalen - ., 560 4 5 6 5 4 Whalen to State Line................. 2,430 16 22 25 22 16 Above table is based upon mean evaporation at Pathfinder as follows: May 0.561 ft.; June 0.767 ft.; July 0.910 ft.; Aug. 0.799 ft.; Sept. 0.568 ft. Co-efficient of 70% to reduce pan record to open water surface. Above table does not contain computed loss for section of river from Pathfinder Dam to head of Alcova Reservoir (area 170 acres) because this area is less than submerged area of original river bed in Alcova Reservoir, and is, therefore, considered as off-set. Likewise the area between Seminoe Dam and head of Path- finder Reservoir is less than area of original river bed through |