South River Dam #8a dam
South River Dam #8a
South River Dam #8a, also known as Jones Hollow, is a crucial flood risk reduction structure located in Waynesboro, Virginia. Owned by the local government and regulated by the Department of Conservation and Recreation, this earth dam stands at a height of 54 feet and stretches 750 feet in length. With a storage capacity of 45 acre-feet and a normal storage of 30 acre-feet, the dam covers a surface area of 7.3 acres and serves a drainage area of 2.5 square miles.
Despite being classified as having a high hazard potential, South River Dam #8a is currently in fair condition, as assessed in June 2020. Regular inspections are conducted, with the last one taking place in June 2020. The Emergency Action Plan (EAP) for the dam was last revised in September 2020, ensuring that necessary measures are in place in case of emergencies. While the dam has not been modified in recent years and no inundation maps have been prepared, its primary purpose of flood risk reduction remains crucial for the community it serves.
Overall, South River Dam #8a plays a vital role in protecting the surrounding area from potential flooding events. Its strategic location in Waynesboro, Virginia, and the attention to regulatory compliance and maintenance ensure that the dam continues to serve its purpose effectively. As water resource and climate enthusiasts, understanding the significance of such infrastructure in mitigating flood risks and safeguarding communities underscores the importance of ongoing monitoring and maintenance efforts for South River Dam #8a.
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 South River Dam #8a -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South River Near Waynesboro | 30 cfs | → |
| South River Near Dooms | 91 cfs | → |
| South River At Harriston | 96 cfs | → |
| Rockfish River Near Greenfield | 24 cfs | → |
| Middle River Near Grottoes | 76 cfs | → |
| Mechums River Near White Hall | 18 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near South River Dam #8a.
Boat launches
- Lake Shenandoah Trail Rockingham County
- Howardsville Turnpike 11001, Albemarle County
- Nelson County
- James River Road Nelson County
Campgrounds
Fishing spots
- Staunton Dam Day Use Area
- Elkhorn Lake Day Use Area
- Braley Pond Day Use Area
- Briery Branch Day Use Area
- Tomahawk Pond Day Use Area
- Bealers Ferry Pond Accessible Fishing Site
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
- Ford Where Route 609 Departs From Route 678 To Confluence With Cowpasture River
- 1 Mile Southeast Of Buchanan (At End Of Nfs Land) To Snowden Dam Reservoir
- Headwaters To Farmville
Track South River Dam #8a 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 South River Dam #8a
Where does the data for South River Dam #8a 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 High 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 South River Dam #8a.