Duncan Dam dam
Duncan Dam
Duncan Dam is a private-owned structure located in Patrick, Virginia, with a height of 35 feet and a length of 450 feet. This earth dam serves the purpose of water storage, with a capacity of 42 acre-feet and a normal storage level of 33 acre-feet. The dam is regulated by the Department of Conservation and Recreation in Virginia and is subject to state permitting, inspection, and enforcement.
The dam's hazard potential is currently classified as 'Undetermined,' with a condition assessment of 'Not Rated.' Emergency action plans and risk management measures have not been specified for Duncan Dam, indicating a potential area for improvement in terms of preparedness and safety protocols. The structure's last inspection date, as of April 2021, is not available, but it is subject to regular inspections with a frequency of once per year.
Located in the Huntington District of Virginia, Duncan Dam stands as a vital component of water resource management in the region, contributing to the conservation and regulation of water flow. While its risk assessment and emergency response protocols may need further development, Duncan Dam remains a significant feature in the state's infrastructure for water storage and management.
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 Duncan Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Mayo River Near Nettleridge | 26 cfs | → |
| Smith River At Smith Riv Church Nr Woolwine | 12 cfs | → |
| Smith River Near Philpott | 126 cfs | → |
| Smith River At Bassett | 119 cfs | → |
| Dan River Near Francisco | 59 cfs | → |
| North Mayo River Near Spencer | 33 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Duncan Dam.
Boat launches
- Us Bus 220 Boat Access Stoneville
- Pine Hall Road 2547-2793, Walnut Cove
- Bethlehem Church Road 587, Eden
- South Fieldcrest Road Draper Village
- Belews Lake Drive 8191, Belews Creek
Campgrounds
- Fairy Stone State Park
- Goose Point - Philpott Lake
- Salthouse Branch - Philpott Lake
- Horseshoe Point - Philpott Lake
- Ryans Branch - Philpott Lake
- Rocky Knob
Fishing spots
Paddle runs
More reservoirs
Track Duncan Dam 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 Duncan Dam
Where does the data for Duncan Dam 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 Undetermined 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 Duncan Dam.