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<br />>(~itjJ) <br /> <br />to <br />W <br />(Xl <br />~) <br /> <br />..~::r>~:~~ <br /> <br />.~: .. <br /> <br />""'. <br />.,..... '" <br />~!~~:; ~'..- ~ ~.: <br />'.,:~", <br /> <br />Under the ACP Program, ASCS received 239 individual requests in 1982. Of <br />these, SCS serviced 228 with 185 completing one or more practices. Since <br />1979, over 1,400 separate requests for cost-share assistance have been <br />received with nearly 900 participants actually completing an irrigation water <br />management and salinity control practice. While the project relies'heavily on <br />annual ACP requests and practices, there have been 12 LTA's on 2,222 acres <br />developed since 1979. Two LTA contracts on 135 acres were completed in 1982. <br />The SCS has also assisted in the development of 48 IWM plans on'l,352 acres in <br />1982, bringing the total number of IWM plans to 195 on 5,473 acres. Actual <br />IWM/salinity control practices applied in 1982 and cumulative to date <br />accomplishments are presented in Table IV-2. <br /> <br />Table IV-2 <br /> <br />Grand Valley Irrigation Water Managment' <br />& Salinity Control Practices Applied <br /> <br />Practices <br /> <br />Unit <br /> <br />1982 11 <br /> <br />Cumulative <br /> <br />Off-farm Related Laterals <br /> <br />Pipeline <br /> <br />Ft. <br /> <br />35,&72 <br /> <br />13&,518 <br /> <br />Ditch Lining <br /> <br />Ft. <br /> <br />1,&07 <br /> <br />5&,241 <br /> <br />Structures <br /> <br />No. <br /> <br />40 <br /> <br />107 <br /> <br />Onfarm Improvements <br /> <br />Pipeline <br /> <br />Ft. &8,213 219,284 <br />Ft; 37,750 127,252 <br />Ft. 43,490 U4,945 <br />Ac. 343 1,782 <br />No. 50 130 <br />No. 8 <br /> <br />Ditch Lining <br /> <br />Gated Pipe <br />Land Leveling <br /> <br />Structures <br /> <br />DriplSprinkler Systems <br /> <br />11 1982 Fiscal Year <br /> <br />The cumulative impacts of these practices and improved irrigation water <br />management represent a 3,555 acre feet reduction in deep percolation per year <br />with an equivalent salt load reduction of 17,700 tons per year. This salt <br />load reduction translates into a 1.84 mg/l reduction in salinity <br />concentrations at Imperial Dam. <br /> <br />15 <br />