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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

ProjectNormal Full PondForebay Actual (Feet)Tail Water (Feet)Tail Water (CFS)
Buck2003.402002.961961.702558
Byllesby2079.202078.962020.872376
Claytor1846.001845.681731.323079
See plant-specific notices below. Data last updated on Jul 18 2025, 8:23 PM EST. Tail water (cfs) is last hour average.

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

ProjectNormal Full PondForebay Actual (Feet)Tail Water (Feet)Tail Water (CFS)
London614.00613.98591.015015
Marmet590.00590.04566.716113
Winfield566.00566.20539.499252
See plant-specific notices below. Data last updated on Jul 18 2025, 8:23 PM EST. Tail water (cfs) is last hour average.

Roanoke River

ProjectNormal Full PondForebay Actual (Feet)Tail Water (Feet)Tail Water (CFS)
Niagara885.00885.21
Smith Mountain795.00794.00607.52
Leesville613.00.00608.09536.712057
See plant-specific notices below. Data last updated on Jul 18 2025, 8:23 PM EST. Tail water (cfs) is last hour average.

Saint Joseph River

ProjectNormal Full PondForebay Actual (Feet)Tail Water (Feet)Tail Water (CFS)
Constantine782.90782.82771.11
MottvilleSummer: 770.40
Winter: 770.00
770.38758.14958
Elkhart741.50
winter: 739.50
741.54721.70
Twin Branch717.10716.91696.171613
BuchananSummer: 637.50
Winter: 637.00
637.49624.291584
Berrien Springs623.50623.59598.201786
See plant-specific notices below. Data last updated on Jul 18 2025, 8:23 PM EST. Tail water (cfs) is last hour average.

Plant–Specific Notices

As of 05:00 this morning, Friday July 18, 2025, inflow to the Smith Mountain Project was 791 CFS and the discharge from Leesville was 862 CFS. The adjusted reservoir elevations was 795.1 ft. The flow rate at the USGS Gauge at Brookneal was 1350 CFS, Stage 5.00 ft. and at Altavista 963 CFS, Stage 2.35 ft.