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o en o o Bureau of Land Management Colorado River Salinity Control Program Accomplishments for Fiscal Year 1992 In Arizona, BLM conducted a soils inventory in Mohave County that concentrated on determining the salinity of soils. The Arizona Strip District Office (Strip District) located in Cedar City, Utah, is undergoing reconnaissance planning in the Bullrush Draw (Kaibab Creek), Clayhole, and Hurricane Wash. Strip District is also maintaining some reservoirs in each of these watersheds. Arizona has held one meeting to initiate ranking of watersheds for salinity control. Safford District is monitoring water quality, sedimen- tation, and total dissolved solids of San Simon and San Pedro Rivers. Total dollars spent: $33,600 (Salinity budget: $30,000) In Colorado, BLM conducted a reconnaissance survey of abandoned leaking wells. One was found in Disappointment valley yielding 20 tons of salt per year (flowing at 2 gallons per minute (gpm) at 4,500 parts per million (ppm)) that could be plugged at a cost of $2,000 .At a cost of $9 per ton of 'salt controlled, this task appears to be very cost effective. Existing tasks were reviewed; 19 tasks were found that would control 12,875 tons of salt per year at a cost of $522,000, or, amortized, less than $4 per ton of salt controlled. Additionally, BLM is working with Reclamation in the Grand Valley to monitor rangeland watershed treatment to determine if earlier results are appropriate. A gauging station also is to be installed on Vermillion Creek. Other project activities included: . Reconnaissance planning at Powder Wash, Vermillion Creek, Evacuation, and two areas in the Uncompahgre River watershed. . Comprehensive planning for Exclosure and Baking Powder watersheds. . Implementation at Exclosure, Baking Powder, Grand Valley, Milk/Alkali, and Spring Creek. . Maintenance at Lower Wolf, Milk/Alkali, Grand Valley, and Horse/Poison. . Monitoring at Lower Wolf, Milk/Alkali, Grand Valley, Horse/Poison, Elephant Skin, and Spring Creek. Total dollars spent: $414,800 (Salinity budget: $223,000) 11 "<'.,,, .