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"",, ,o..n 'lJlJ-'-"~ <";';'-: .;- .,.--,,-" .. . . ;......iii1.. "I ". I J , , j I (2) Waterfowl - ApproximatelY 300 acres of wetlands at Head Lake and the area between Head and San Luis Lakes would be developed and main- tained by the use of 6 ft 3/s of project water delivered into Head Lake. The development of this area would occur provided that the State of Colorado agrees to replace evaporation and seepage losses over and above historic losses resulting from this development. This development would enhance waterfowl production by about 1,344 ducks per year and hunter-days by 232. Net benefits associated with this increase would amount to $2,204 annually. Wildlife-oriented recreation would also increase by about 1,000 use-days/season with net benefits of about $2,000 annually. . (3) State Wildlife Area - The Colorado Division of Wildlife intends to develop a waterfowl area at Head Lake and in the low-lying area between Head Lake and San Luis Lake. These lands are presently owned by the State of Colorado and would be developed at no cost to the project. Develop- ment of this area is dependent on the availability of 6 ft 3/s of pumped ground water to Head Lake and allowing the water to flow naturally through the proposed wildlife area and into San Luis Lake. The Division of Wildlife would divert some of this flow to provide wetland areas for wildlife between the two lakes. (a) Water Augmentation - The Division of Wildlife is presently formulating a plan for water augmentation by which any increased con- sumptive use of water at Head Lake and between Head and San Luis Lakes as a re- sult of the establishment of the waterfowl area would be replaced by other Wild- life Division-owned water in the San Luis Valley. If the proposed Head Lake plan and associated water replacement do not become part of the overall Federal project, water used to stabilize San Luis Lake would be routed directly to San Luis Lake rather than through Head Lake. Seepage and evaporation over and above historic losses from San Luis Lake would also be replaced by the Division of Wildlife. (b) Physical features - The wildlife area would be about 4,000 acres in size when fully developed and would require about 3 miles of ditches and 4 dikes totaling about 25,200 feet. Dikes would be about 3 feet high, have 5 to 1 side slopes, and a top width of 14 feet. Additional construc- tion would include about 13 miles of roads, 13 miles of fence and a maintenance building. These features would be constructed by the State of Colorado. e. Russell Lakes (1) Waterfowl and other Water Birds - Replacement and develop- ment of existing and new wetlands and wetland habitat in the Russell Lakes WMA would increase and enhance waterfowl production annually by about 2,595 birds. Use of the 2,998 acres of wetlands by other water birds and species of high Federal interest would be enhanced by about 74,950 use-days/per season annually. Increased waterfowl hunting is expected to average 447 man-days with net benefits of $4,446 annually. Wildlife oriented recreation will increase by about 2,000 man-days use annually. Net benefits associated with this will average about $4,000. I I -1 I 'l ~1 I '4 -I J ~ f. Main Conveyance Channel (1) Fishing - Water quality of the pumped water is expected to be suitable to develop and maintain 42 miles of coldwater fishery in the conveyance channel. The fishery would be maintained by annual stocking by the Colorado 29