Terwilliger Dam dam
Terwilliger Dam
Terwilliger Dam, located in Fauquier, Virginia, is a privately owned structure regulated by the Department of Conservation and Recreation. Standing at a height of 25 feet, the dam's primary purpose and design details are not specified in the available data. However, it boasts a storage capacity of 61.7 acre-feet, with a normal storage capacity of 43.8 acre-feet and a surface area of 5.21 acres.
Despite its undetermined hazard potential and not being rated for its condition assessment, Terwilliger Dam is subject to regular state inspection and enforcement. The dam's emergency action plan status and risk management measures are not specified, indicating a need for further evaluation and monitoring. With its location in an area prone to climate fluctuations and water resource challenges, ensuring the safety and efficiency of Terwilliger Dam remains a critical priority for both the owner and regulatory agencies.
As water resource and climate enthusiasts, the unique characteristics and regulatory aspects of Terwilliger Dam present an intriguing case study. By delving deeper into its design, operational history, and risk management strategies, a comprehensive understanding of the dam's role in water management and environmental stewardship can be gained. Continuous monitoring and assessment of Terwilliger Dam will be essential in ensuring its long-term resilience and effectiveness in mitigating potential hazards and supporting sustainable water resource management practices in the region.
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 Terwilliger Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Spout Run At Rt 621 Near Millwood | 8 cfs | → |
| Goose Creek Near Middleburg | 16 cfs | → |
| S F Shenandoah River At Front Royal | 405 cfs | → |
| Beaverdam Creek At Rt 734 Near Mountville | 6 cfs | → |
| Passage Creek Near Buckton | 12 cfs | → |
| Opequon Creek Near Berryville | 14 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Terwilliger Dam.
Boat launches
- Country Club Road Warren County
- Luray Avenue Front Royal
- Harry Byrd Highway Clarke County
- River Haven Drive Jefferson County
- Boat Ramp Warren County
- Strasburg Trail Strasburg
Campgrounds
Fishing spots
- Batzell Boat Launch
- Moody Boat Launch
- White Sulphur Pond
- Bealers Ferry Boat Launch
- Bealers Ferry Pond Accessible Fishing Site
- Potomac River Reservoir
Paddle runs
- Bixler Bridge On State Route 675 To Karo Landing, Approximately 6 Miles South Of Town Of Front Royal
- Segment C--Nf Boundary To Confluence With North Fork Shenandoah River
- Segment B--State Route 730 Bridge To Nf Boundary
- State Route 675 At Edinburg, Va To State Highway 55 Southeast Of Strasburg, Va
- Headwaters Adjacent To Fdt 573 To State Route 622 Bridge
- Wardensville To The Town Of Capon Bridge
Track Terwilliger 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 Terwilliger Dam
Where does the data for Terwilliger 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 Terwilliger Dam.