South Fork No.11 dam
South Fork No.11
South Fork No.11 is a crucial flood risk reduction structure located in Pendleton, West Virginia. Built in 1962 by the USDA NRCS, this Earth dam stands at a height of 89.1 feet, with a hydraulic height of 77.1 feet, providing storage of up to 935 acre-feet of water. With a primary purpose of flood risk reduction, this dam on Road Run is regulated by the West Virginia Department of Environmental Protection and undergoes regular inspections to ensure its safety and effectiveness.
Despite being rated as having a high hazard potential, South Fork No.11 has not received a formal condition assessment. However, it meets emergency action plan guidelines and has preparedness measures in place. The risk assessment for this dam is moderate, with a DSAC not yet assigned. The uncontrolled spillway and outlet gates present a unique challenge, but the structure has been designed to handle a maximum discharge of 9,669 cubic feet per second, protecting the surrounding area from potential flooding events.
Overall, South Fork No.11 serves as a critical piece of infrastructure in the region, contributing to flood risk reduction efforts and ensuring the safety of the community of Fort Seybert. With its stone core and earth foundation, this dam is a testament to effective water resource management and climate resilience in West Virginia.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around South Fork No.11 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| So Fk So Br Potomac R At Brandywine | 10 cfs | → |
| South Branch Potomac River At Franklin | 33 cfs | → |
| Muddy Creek At Mount Clinton | 1 cfs | → |
| N F Shenandoah River At Cootes Store | 129 cfs | → |
| Linville Creek At Broadway | 5 cfs | → |
| North River Near Stokesville | 2 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near South Fork No.11.
Boat launches
- Lake Shenandoah Trail Rockingham County
- Buffalo Fork Road Pocahontas County
- Kimsey Run Road Hardy County
Campgrounds
- Brandywine Campground
- Brandywine Recreation Area
- Camp Run Campground
- Hone Quarry Campground
- Seneca Shadows Campground
- Princess Snowbird Campground
Fishing spots
- Briery Branch Day Use Area
- Tomahawk Pond Day Use Area
- Staunton Dam Day Use Area
- Elkhorn Lake Day Use Area
- Braley Pond Day Use Area
- Dry Fork
Paddle runs
- Canyon Exit To Spruce Knob-Seneca Rocks Nra Boundary
- Big Bend Campground To Canyon Exit (Just Prior To Confluence With North Branch)
- Run North Of Judy Springs To Private Land
- Shreve Store To Big Bend Campground
- Trussel Run To Run North Of Judy Springs
- North River Campground To Camp May Flather
Track South Fork No.11 in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About South Fork No.11
Where does the data for South Fork No.11 come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of South Fork No.11.