Laserfiche WebLink
<br />. <br /> <br />.> <br /> <br />" <br />[' <br />~ <br /> <br />Settlement <br /> <br />Number of persons served <br />water (1 'J58): <br />Farm irrigation service <br />Municipal water service <br /> <br />with project <br /> <br />Pine River Indian <br />Pine River Irri(1ution <br />1,176 300 <br />o 290 <br /> <br />Total. . . . . . <br /> <br />1,176 <br /> <br />ENGINEERING DATA <br /> <br />Water Su~ply <br /> <br />PINE (Los Pl~OS) RIVER <br /> <br />Drainage area at Vallecito Dam (square miles) <br />Annual discharge near Bayfield (acre-feet): <br />Maximum (1941) <br />Minimum (1934) . . . . . . <br />Average (1927-55) . . . .. .... <br />Average annual diversion, 1942-55 (acre-feet) <br /> <br />Storage Facilities <br /> <br />V ALLECtTO DAM <br /> <br />Type: Zoned earthfill. <br />Locatioll: On the Pine (Los Piiios) River, 18 miles <br />northeast of Durango, Colo. <br />Construction period: 1938-41. <br />Date of closure (first storage): 1941. <br /> <br />0288 <br /> <br />Pine River Project <br /> <br />590 <br /> <br />270 <br />411, 500 <br />124, 700 <br />256,000 <br />166, 200 <br /> <br />Reservoir, Vallecito: <br />Average aIlnual inflow, 1941-55 (acre-feet) . <br />Total capacity to elevation 7665 (acre-feet) . . <br />Active capacity, elevation 7580 to 7665 (acre- <br />feet) . . . . . <br />Surface area (acres) <br />Dimensions (feet): <br />Structural height. . <br />Hydraulic height. . <br />Top width . . . . <br />Maximum base width <br />Crest length. . . . . <br />Crest elevation . . <br />Total volume (cubic yards) . <br />Spillway: Concrete-lined open channel in right <br />abutment, controlled by three 37- by 19-foot <br />radial gates. <br />Elevation top of gates (feet) . <br />Crest elevation (feet) . <br />Capacity at elevation 7665.0 (cubic feet per <br />second). . . . . . . . . . <br />Outlet works: Twin-section concrete conduit <br />through right abutment, controlled by two <br />5- by 5-foot slide gates. <br />Capacity at elevation 7665.0 (cubic feet per <br />second). .. . ........... <br />Foundation: Recessional moraine covered with <br />slope wash ann alluvium up to 200 feet over <br />strongly bedded horizlJntal formations of sand- <br />stone, shale, and mudstone. <br />Special treatment: Grout curtains beneath cut- <br />off walls, supplemental grouting of abutments. <br /> <br />3 <br /> <br />265, 600 <br />129, 700 <br />126.300 <br />2,720 <br />162 <br />117 <br />35 <br />900 <br />4,010 <br />7673.0 <br />3,738,000 <br /> <br />7665. 0 <br />7646. 0 <br />30,000 <br /> <br />3,100 <br />