The Watershed Program in Colorado (Pilot and Public Law 566) (3)

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- 4 - primary purpose of the project is for flood prevention for agricultural and urban land and associated land treatment work. the work plan provided for a three -year installation period. ALtho:�ized April 1, 1969. Construction was completed March.21, 1972 and project completed June 30, 1972. One structu -e C -1 and one floodway C1F and extension were deleted by sponsor request and agreement. Estimated construction cost for 2 floodwater retarding structures, C -3 and C4 and floodway C -4 is $611,600 ($22,030 local cost and $589,570 PL 566 cost). Land treatment measures to be applied were estimated at $30,1 1 0 ($28,970 local cost and $1',200 PL 566 cost). Final completion report will be prepared early in 1973. Authorized Watershed Projects not Completed (Public L 566 Home Supply Watershed Project (Larimer and Weld Counties) - An Agricultural Water Management Project consisting of land treatment measures and structural measures for the rehabilitation of the canal system and a 5,100 acre -foot reservoir for supplemental irrigation storage which has been completed. Estimated project cost is $2,092 ($1,195,500 PL 566 and $897,000 local costs). Project area is 43,140 acres. Sponsors are the Big Thompson Soil Conservation District, the Consolidated Home Supply Ditch and Reservoir Company, the Handy Ditch Company and the Colorado State Soil Conservation Board. One contract for canal lining remains to be let this winter. This will complete the project as presently provided for in the work plan. However, sponsors desire to supplement the work plan to add the remainder of.the Handy Ditch system to the project. A review draft of the supplement is scheduled for completion in March, 1973. Pine River Watershed (Archuleta and La Plata Counties) - This project consists of land treatment measures and flood prevention and canal structures for the protection of the project irrigated lands and for the rehabi- litation of the canal system.. Estimated project cost is $1,150,965 ($625,965 PL 566 and $575,000 other costs). Project area is 57,730 acres. The project is sponsored by the Pine River Soil Conservation District and the Pine River Canal Company. Construction is complete. Project close -out is scheduled for December 1, 1972. The final completion report will be prepared about January, 1974. Crooked Arroyo Project (Otero County) - Project area is 71,936 acres. Sponsors are the East Otero and Timpas Soil Conservation Districts and Otero County Board of Commissioners. The Crooked Arroyo conser- vancy was formed to provide project land rights and the Colorado State Soil Conservation Board have joined as sponsors. This is a flood prevention project consisting of land treatment and structural measures, consisting of four floodwater retarding structures to reduce floodwater and. sediment damages to irrigated lands and canal systems, roads, bridges and railroads and to residential and commercial