Located at 3,370 feet of elevation, the 35-acre McKays Point Reservoir is part of the North Fork Stanislaus River Hydroelectric Development Project. Located on the Stanislaus National Forest, the reservoir is a joint development project by Northern California Power Agency (NCPA) and Calaveras County Water District (CCWD). CCWD is the Licensee and NCPA is the Project Operator. Spanning 60 miles of the western slope of the Sierra Nevada, the Project ranges from the North Fork Diversion Dam at the alpine elevation of 6,700 feet to the Collierville Power Plant in the North Fork Stanislaus Canyon at 1,099 feet.
From McKays Point, the water enters an 18-foot diameter, 8.3 mile tunnel. The water picks up the gravitational energy as it falls the distance of 2,270 feet from McKays Point to the Collierville Powerhouse. The energy is more than sufficient to rotate the two turbines and generators weighing 12 tons each at a speed of 450 rpm generating 253 MW total electrical power at maximum capacity. The electric power created by the generators is “stepped up” in voltage at the Collierville Substation, then transmitted to PG&E’s Bellotta Substation. NCPA built 40 miles of 230 kilovolt transmission lines to connect the Collierville Powerhouse with PG&E’s Bellota substation.
| Date Taken: | 07.24.2025 |
| Date Posted: | 09.15.2025 07:30 |
| Photo ID: | 9311885 |
| VIRIN: | 250724-D-OW629-1015 |
| Resolution: | 8256x5504 |
| Size: | 7.36 MB |
| Location: | ARNOLD, CALIFORNIA, US |
| Web Views: | 16 |
| Downloads: | 1 |
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