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-64- SEIDSICADEE PROJECT Survey and construction plans are being formulated for the Seedskadee Project. Present plans. call for construction of Fontenelle Dam, an earthen structure to be built approximately one-half mile above Station No. 2 of this report. This dam, when completed, will back waters to form Fontenelle Reservoir. There will be 7,000 surface acres in this reservoir at full stage and it will extend some 16 miles up the Green River to the vicinity of Sta- tion No. 1 of this report. The proposed Fontenelle Reservoir will divert direct flows of the Green River, store surplus spring flows and supplement ,late season flows to pro- vide irrigation ,water for 59,620 acres of land in the project area. From information on hand at this time, the reservoir will have a total capacity of 285,000 acre feet, and of this storage, 85,000 acre feet or approximately 30% will be used annually for irrigation. Of the remaining water, _5,000 acre feet will be used for fish and wildlife and 195,000 acre feet will be stored in the reservoir as dead storage below the canal system elevations. The map, following page, shows the areas to be developed and the water- fowl area to be developed in conjunction with the irrigation project. The waterfowl area was proposed and will be developed by the U. S. Fish and Wildlife Service. For purposes of classification the U.~.D.A. has divided lands to be developed in this area into four groups; A, B, C, and D. Lands classified into the A, B,-and .part of C groups are those which lend themselves to crop cultivation.. These crops will be limited for the most part to hay and grains. The majority of crops grown will be utilized in the area on diary farms and for the production of sheep and beef. Lands in the remainder of the C group and alI of the D group are recommended for the production of permanent pasture because of shallow, uneven soil depths, high alkaline content of the soil, soil textures, etc. Extensive drainage installations have been recommended for a large part of the project by the U.S.D.A. The purpose of these drains are to transport irrigation waste and seepage waters away from areas where high water tables are likely to develop. It is anticipated that these waters will be very saline and if allowed to seep back as ground water they would cause the soils on lower cropland benches to become highly alkaline.