Utica Auxiliary No.
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Humidity
4 is a privately owned dam located in Alpine County, California, near Dorrington. Completed in 1903, this rockfill dam stands at a height of 10 feet and serves multiple purposes, including hydroelectric power generation, recreation, and water supply. With a storage capacity of 2,500 acre-feet and a maximum discharge of 8,900 cubic feet per second, this dam plays a crucial role in managing the water resources of the North Fork Stanislaus River.
Managed by the Federal Energy Regulatory Commission, Utica Auxiliary No. 4 has a low hazard potential and a moderate risk assessment rating. While its condition assessment is not available, the dam undergoes regular inspection, with the last one conducted in September 2018. With an uncontrolled spillway and a spillway width matching its length of 279 feet, the dam ensures the safe release of excess water during high flow events. Despite its age, Utica Auxiliary No. 4 continues to be a key component of the region's water infrastructure, demonstrating its resilience and importance in water resource management.
Year Completed |
1903 |
Dam Length |
279 |
Dam Height |
10 |
River Or Stream |
North Fork Stanislaus River - |
Primary Dam Type |
Rockfill |
Surface Area |
233.5 |
Hydraulic Height |
9 |
Drainage Area |
15 |
Nid Storage |
2500 |
Structural Height |
9 |
Hazard Potential |
Low |
Nid Height |
10 |
| Location | Reservations | Toilets |
|---|---|---|
Union West Campground
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Union Reservoir East
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Union East Campground
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Utica Reservoir Campgrounds
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Spicer Meadow
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Spicer Reservoir Campground
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