Gregory Dam dam
Gregory Dam
Located in Pittsylvania, Virginia, Gregory Dam is a privately owned structure that serves multiple purposes, including recreation and irrigation. Managed by the Department of Conservation and Recreation, this earth dam stands at a height of 28 feet, providing storage capacity of 64 acre-feet. The dam is situated on the TR-JOHNS RUN river/stream and is regulated by the state with regular inspections and enforcement measures in place.
With a primary purpose of recreation, Gregory Dam offers a tranquil setting for water resource and climate enthusiasts to enjoy. While the hazard potential and condition assessment are currently undetermined and not rated, respectively, the dam remains a key feature in the region's water management infrastructure. Despite lacking certain details such as the year of completion and dam length, Gregory Dam continues to play a vital role in providing water storage and recreational opportunities for the local community.
As a part of the Wilmington District, Gregory Dam enhances the natural landscape of Virginia and contributes to the overall water resource management efforts in the area. Whether used for irrigation or leisure activities, this privately owned structure stands as a testament to the importance of sustainable water management practices in the face of climate change. With a focus on safety and regulatory compliance, Gregory Dam exemplifies the balance between human needs and environmental stewardship in water resource 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 Gregory Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Dan River At Paces | 651 cfs | → |
| Banister River At Halifax | 111 cfs | → |
| Dan River At South Boston | 716 cfs | → |
| Dan River At Stp Near Danville | 863 cfs | → |
| Sandy River Near Danville | 32 cfs | → |
| Pigg River Near Sandy Level | 200 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Gregory Dam.
Track Gregory 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 Gregory Dam
Where does the data for Gregory 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 Gregory Dam.