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 | 2002.97 | 1959.15 | 566 |
| Byllesby | 2079.20 | 2077.04 | 2020.87 | 523 |
| Claytor | 1846.00 | 1845.57 | 1730.40 | 765 |
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 | 614.06 | 590.75 | 1412 |
| Marmet | 590.00 | 590.09 | 566.18 | 2091 |
| Winfield | 566.00 | 566.44 | 538.59 | 0 |
Roanoke River
| Project | Normal Full Pond | Forebay Actual (Feet) | Tail Water (Feet) | Tail Water (CFS) |
|---|---|---|---|---|
| Niagara | 885.00 | 885.30 | – | – |
| Smith Mountain | 795.00 | 792.14 | 607.50 | – |
| Leesville | 613.00.00 | 608.70 | 532.73 | 498 |
Saint Joseph River
| Project | Normal Full Pond | Forebay Actual (Feet) | Tail Water (Feet) | Tail Water (CFS) |
|---|---|---|---|---|
| Constantine | 782.90 | 782.92 | 771.03 | – |
| Mottville | Summer: 770.40 Winter: 770.00 | 770.44 | 757.76 | 577 |
| Elkhart | 741.50 winter: 739.50 | 741.60 | 721.43 | – |
| Twin Branch | 717.10 | 716.98 | 695.88 | 813 |
| Buchanan | Summer: 637.50 Winter: 637.00 | 637.47 | 624.11 | 1064 |
| Berrien Springs | 623.50 | 623.48 | 598.23 | 2044 |
Plant–Specific Notices
As of 05:00 this morning, Wednesday October 15, 2025, inflow to the Smith Mountain Project was 371 CFS and the discharge from Leesville was 496 CFS. The adjusted reservoir elevations was 793.4 ft. The flow rate at the USGS Gauge at Brookneal was 634 CFS, Stage 4.14 ft. and at Altavista 585 CFS, Stage 1.79 ft.
October 9, 2025 - Appalachian Power will be lowering the Byllesby reservoir elevation on the New River to approximately 2070 feet. The drawdown is scheduled to start on Friday, October 10. The Byllesby reservoir is expected to reach the drawdown elevation by 11:00 Monday, October 13. Drawdown of the reservoir is necessary to remove debris from the spillway. The work is expected to be completed in one day. Upon completion of the work, the reservoir will be restored to the normal operating elevation based upon river inflow.