Grymes Mill Dam dam
Grymes Mill Dam
Grymes Mill Dam, located in Orange, Virginia, is a privately owned earth dam on Church Run with a primary purpose of recreation. The dam stands at 30 feet high and stretches 120 feet in length, with a storage capacity of 1207 acre-feet and a surface area of 55 acres. Despite being state-regulated and inspected, the dam's condition assessment remains unrated since its last inspection in December 2008. With a low hazard potential, Grymes Mill Dam poses minimal risk to the surrounding area.
While the dam has not been modified in recent years, its emergency action plan (EAP) was last revised in December 2002. The dam's emergency preparedness and risk management measures, including inundation maps and risk assessment, are currently not specified in the available data. The dam is not under the jurisdiction of the US Army Corps of Engineers and has no associated federal agency ownership, funding, design, construction, or regulatory oversight. Despite its low hazard potential, Grymes Mill Dam serves as a recreational asset in Orange County, providing opportunities for outdoor activities in a scenic natural setting.
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 Grymes Mill Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Robinson River Near Locust Dale | 226 cfs | → |
| Rapidan River Near Culpeper | 461 cfs | → |
| Rapidan River Near Ruckersville | 170 cfs | → |
| N F Rivanna River Near Earlysville | 159 cfs | → |
| Rappahannock River At Remington | 872 cfs | → |
| North Anna River Near Partlow | 57 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Grymes Mill Dam.
Boat launches
- Southlake Drive 9505, Spotsylvania County
- Elys Ford Road 10615, Fredericksburg
- Elys Ford Road Spotsylvania County
- South Boston Road 3315, Fluvanna County
- River Anne Palmyra
Campgrounds
- Christopher Run Campground
- Lake Anna State Park
- Lewis Mountain - Shenandoah National Park
- Lewis Mountain
- Lewis Mountain Campground
- Big Meadows - Shenandoah National Park
Fishing spots
- Bealers Ferry Boat Launch
- Bealers Ferry Pond Accessible Fishing Site
- Moody Boat Launch
- Batzell Boat Launch
- White Sulphur Pond
- Tomahawk Pond Day Use Area
Paddle runs
- Bixler Bridge On State Route 675 To Karo Landing, Approximately 6 Miles South Of Town Of Front Royal
- Segment B--State Route 730 Bridge To Nf Boundary
- Segment C--Nf Boundary To Confluence With North Fork Shenandoah River
- State Route 675 At Edinburg, Va To State Highway 55 Southeast Of Strasburg, Va
Track Grymes Mill 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 Grymes Mill Dam
Where does the data for Grymes Mill 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 Low 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 Grymes Mill Dam.