River Flows for Hydro Plants
You may track, on an hourly basis, water levels and flows of the recreational rivers and lakes near AEP's hydroelectric facilities. See a map of our plant locations.
Explanation of Terms
- The "Forebay" and "Tailwater" numbers show the feet above sea level of the water levels immediately upstream and downstream from our plants.
- "Tailwater Flow" is the hourly average of the river flow just downstream of the plants, measured in cubic feet per second.
New River Flows & Forecasts
Water release information for AEP's Claytor, Buck, and Byllesby hydro dams is updated every fifteen minutes. Forecast information is estimated. Water travel times may be affected by water conditions, precipitation in the watershed and other factors.
Most Recent Conditions
| Project | Normal Full Pond | Forebay Actual (Feet) | Tail Water (Feet) | Tail Water (CFS) |
|---|---|---|---|---|
| Buck | 2003.40 | 1995.59 | 1937.50 | 2258 |
| Byllesby | 2079.20 | 2073.07 | 2020.87 | 4167 |
| Claytor | 1846.00 | 1842.28 | 1730.86 | 1968 |
Downstream Forecasts
Forecast information shows water release information from the Claytor Dam, delayed to account for the average time it takes the released water to reach particular points downstream. Water travel times may be affected by water conditions, precipitation in the watershed and other factors.
Kanawha River
| Project | Normal Full Pond | Forebay Actual (Feet) | Tail Water (Feet) | Tail Water (CFS) |
|---|---|---|---|---|
| London | 614.00 | 614.09 | 591.78 | 9614 |
| Marmet | 590.00 | 590.32 | 567.95 | 7478 |
| Winfield | 566.00 | 566.26 | 539.44 | 7394 |
Roanoke River
| Project | Normal Full Pond | Forebay Actual (Feet) | Tail Water (Feet) | Tail Water (CFS) |
|---|---|---|---|---|
| Niagara | 885.00 | 885.74 | – | – |
| Smith Mountain | 795.00 | 793.69 | 609.75 | – |
| Leesville | 613.00.00 | 604.01 | 532.25 | 1069 |
Saint Joseph River
| Project | Normal Full Pond | Forebay Actual (Feet) | Tail Water (Feet) | Tail Water (CFS) |
|---|---|---|---|---|
| Constantine | 782.90 | 782.91 | 771.56 | – |
| Mottville | Summer: 770.40 Winter: 770.00 | 770.37 | 759.05 | 1672 |
| Elkhart | 741.50 winter: 739.50 | 741.55 | 722.01 | – |
| Twin Branch | 717.10 | 716.91 | 696.31 | 2878 |
| Buchanan | Summer: 637.50 Winter: 637.00 | 637.49 | 624.89 | 3198 |
| Berrien Springs | 623.50 | 623.52 | 598.77 | 4121 |
Plant–Specific Notices
As of 05:00 this morning, Monday May 12, 2025, inflow to the Smith Mountain Project was 645 CFS and the discharge from Leesville was 1076 CFS. The adjusted reservoir elevations was 794.2 ft. The flow rate at the USGS Gauge at Brookneal was 1540 CFS, Stage 5.16 ft. and at Altavista 1330 CFS, Stage 2.59 ft.
April 19, 2025 – Appalachian Power will be lowering the reservoir at the Byllesby Dam on the New River to an elevation of 2070 feet. The drawdown is scheduled to start on Sunday, April 20. The Byllesby reservoir is expected to reach the desired drawdown elevation by 08:00 Monday, April 21. Appalachian Power plans to replace a low-water bridge that was washed out during the September 2024 flood event. Upon completion of the repairs, the reservoir will be refilled based upon water inflow.
May 11, 2025 - Appalachian Power will begin further lowering the Claytor reservoir elevation from its current elevation, approximately 1844.1 feet, at noon today in preparation of potential heavy rainfall and resultant high flows forecast updated this morning by the National Weather Service (NWS) for the New River watershed. Appalachian plans to lower the reservoir to a target elevation of approximately 1842 feet by noon tomorrow, Monday, May 12, 2025. Appalachian will continue to monitor the NWS forecasts and make adjustments as needed.