Greens Dam dam
Greens Dam
Located in Albemarle, Virginia, Greens Dam is a privately owned structure designed for flood risk reduction along the TR-North Fork Rivanna River. This Earth-type dam stands at 55 feet tall and stretches 300 feet in length, providing a storage capacity of 329 acre-feet. With a hazard potential rated as low and a condition assessment yet to be rated, Greens Dam plays a crucial role in mitigating flood risks in the area.
Managed by the Department of Conservation and Recreation in Virginia, Greens Dam is regulated, permitted, inspected, and enforced by state agencies to ensure its structural integrity and operational efficiency. Despite being not fully rated for condition assessment, Greens Dam stands as a vital infrastructure for flood protection, with a normal storage capacity of 120 acre-feet and a surface area of 16 acres. While the dam's emergency action plan status and risk assessment remain unclear, its low hazard potential suggests a relatively low risk to surrounding communities.
With Denver Riggleman (R) as the representative overseeing the area, Greens Dam serves as a crucial asset in the region's water resource management and climate resilience efforts. As water resource and climate enthusiasts track its updates, Greens Dam stands as a testament to the collaborative efforts between private owners and state agencies in safeguarding communities from potential flood risks along the TR-North Fork Rivanna River.
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 Greens Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| N F Rivanna River Near Earlysville | 72 cfs | → |
| Moormans River Near Free Union | 38 cfs | → |
| Rapidan River Near Ruckersville | 72 cfs | → |
| Mechums River Near White Hall | 27 cfs | → |
| Robinson River Near Locust Dale | 85 cfs | → |
| Rivanna River At Palmyra | 102 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Greens Dam.
Boat launches
- South Boston Road 3315, Fluvanna County
- River Anne Palmyra
- Grove Hill River Road Page County
- Lake Shenandoah Trail Rockingham County
- Columbia Road Columbia
- Boat Landing Lane Buckingham County
Campgrounds
- Loft Mountain - Shenandoah National Park
- Loft Mountain Campground
- Girl Scout Camp
- Dundo
- Lewis Mountain Campground
- Lewis Mountain
Fishing spots
- Bealers Ferry Boat Launch
- Bealers Ferry Pond Accessible Fishing Site
- Moody Boat Launch
- Staunton Dam Day Use Area
- Batzell Boat Launch
- Briery Branch Day Use Area
Paddle runs
- Nf Boundary Along The South Fork Tye River Near Fdt 526 And State Highway 56 To Town Of Nash
- Headwaters South Of Flint Mountain To St. Mary's Wilderness Boundary
- North River Campground To Camp May Flather
- 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
Track Greens 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 Greens Dam
Where does the data for Greens 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 Greens Dam.