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Paonia Dam |
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Power Generation Narration
Geology The damsite is located in a narrow V-notch section of Muddy Creek. On the right abutment, a thin mantle of soil blankets the Mesaverde formation. There are outcrop exposures of sandstone along this abutment about 60 feet above the stream. Accumulation of slope wash was found along the base of this abutment. This soil is generally sandy in texture with some fragments of sandstone distributed throughout. These fragments of sandstone vary in size from one foot to five feet in diameter. The left abutment of the dam is a steep North Slope covered with a mantle of sandy boulder soil. The depth of overburden on both abutments varies considerably and is influenced by alternating beds of sandstone and shales. The overburden blanketing the sandstone lenses is very shallow; the depth of overburden over the shale is deeper. The stream channel is made up of lava and granitic cobbles and boulders intermixed with the stream gravels. Slope wash and out wash fan accumulations have crowded into the channel. The depth of the channel gravel varies from 10 to 19 feet below the elevation of the stream surface through the damsite area. The stream has done some undercutting especially along the base of the left abutment and caused the slumping of the slope wash diverting the channel back to the right abutment. Links | Recreation | | Dams Located by State | USBR Colorado Dams | Upper Colorado Region Dams | | Owner: Bureau of Reclamation, Western Colorado Area Office, | Operator: North Fork Water Conservancy District,
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