Prentice Drive Dam (Near Randolph Drive) dam
Prentice Drive Dam (Near Randolph Drive)
The Prentice Drive Dam, located near Randolph Drive in Loudoun, Virginia, is a privately owned structure designed for flood risk reduction along the Broad Run tributary. Standing at a height of 18 feet and stretching 450 feet in length, this earth dam provides a storage capacity of 56.6 acre-feet, with a normal storage level of 16.1 acre-feet and a surface area of 4.6 acres. Despite being state regulated and inspected, the dam's hazard potential and condition assessment remain undetermined and not rated, respectively.
Owned privately, the Prentice Drive Dam serves as a crucial infrastructure for flood risk management in the area, under the oversight of the Department of Conservation and Recreation in Virginia. With its strategic location and purpose, this dam plays a significant role in safeguarding the surrounding community from potential flood events. Although its emergency action plan and risk assessment details are currently unspecified, the dam's operational readiness and functionality are essential for effective emergency response and risk mitigation.
While the exact completion year and modification history of the Prentice Drive Dam are unspecified, its structural integrity and efficiency in flood risk reduction are paramount. As water resource and climate enthusiasts, understanding the significance of this dam in protecting the local ecosystem and residents from potential flooding events highlights the importance of maintaining and assessing its condition regularly. As the dam's hazard potential and emergency preparedness remain undetermined, continued monitoring and evaluation are crucial to ensure its effectiveness in mitigating flood risks and protecting the community.
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 Prentice Drive Dam (Near Randolph Drive) -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Broad Run Near Leesburg | 188 cfs | → |
| Goose Creek Near Leesburg | 67 cfs | → |
| Seneca Creek At Dawsonville | 72 cfs | → |
| Difficult Run Near Great Falls | 149 cfs | → |
| Limestone Branch Near Leesburg | 3 cfs | → |
| N F Goose Creek At Rt 729 Near Lincoln | 18 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Prentice Drive Dam (Near Randolph Drive).
Boat launches
- Ashburn Village Boulevard 20585, Lansdowne
- Edwards Ferry Road Montgomery County
- Rileys Lock Road Darnestown
- Smart's Mill Rd (Private) Leesburg
- Potomac Hills Street Fairfax County
- Clarksburg Road Germantown
Campgrounds
- Horsepen Branch
- Horsepen Branch Campsite
- Chisel Branch Campsite
- Chisel Branch
- Lake Fairfax
- Turtle Run Campsite
Fishing spots
- Washington Aqueduct
- Dalecarlia Reservoir
- Gillam Branch (Historical)
- Davis Branch (Historical)
- Maddox Branch
- Georgetown Reservoir
Paddle runs
- Bixler Bridge On State Route 675 To Karo Landing, Approximately 6 Miles South Of Town Of Front Royal
- Headwaters Adjacent To Fdt 573 To State Route 622 Bridge
- State Route 675 At Edinburg, Va To State Highway 55 Southeast Of Strasburg, Va
- Segment C--Nf Boundary To Confluence With North Fork Shenandoah River
- Segment B--State Route 730 Bridge To Nf Boundary
Track Prentice Drive Dam (Near Randolph Drive) 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 Prentice Drive Dam (Near Randolph Drive)
Where does the data for Prentice Drive Dam (Near Randolph Drive) 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 Prentice Drive Dam (Near Randolph Drive).