J A Moss Dam dam
J A Moss Dam
J A Moss Dam, located in Orangeburg, South Carolina, was completed in 1875 and stands at a height of 16 feet with a length of 570 feet. This Earth-type dam serves primarily for recreation, offering a serene backdrop for water resource and climate enthusiasts to enjoy. With a maximum storage capacity of 241 acre-feet and a normal storage of 114 acre-feet, the dam provides a surface area of 32 acres for leisure activities.
While the dam has a low hazard potential, its condition assessment was deemed unsatisfactory during the last inspection in July 2017. Despite this, the risk assessment remains moderate, indicating the need for ongoing maintenance and management measures to ensure the safety and integrity of the structure. As a state-regulated dam with permits for inspection, enforcement, and permitting in place, the South Carolina Department of Health and Environmental Control oversees the regulatory aspects of J A Moss Dam, making it a crucial focal point for water resource management in the region.
For those interested in the intersection of water resources and climate, J A Moss Dam serves as a valuable case study in balancing recreational benefits with safety and regulatory oversight. As the Savannah District of the US Army Corps of Engineers monitors the dam, ongoing assessments and risk management measures will be essential to maintain the integrity of this historic structure and ensure its continued contribution to the local ecosystem and 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 J A Moss Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| North Fork Edisto River At Orangeburg | 226 cfs | → |
| South Fork Edisto River Near Cope | 225 cfs | → |
| South Fork Edisto River Near Bamberg | 225 cfs | → |
| South Fork Edisto River Near Denmark | 222 cfs | → |
| Wateree R. Bl Eastover | 2,400 cfs | → |
| Gills Creek At Columbia | 13 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near J A Moss Dam.
Boat launches
- Shillings Bridge Road Orangeburg County
- Savannah Highway Neeses
- Bobcat Landing Road , 29003
- Cannon Bridge Road ,
- Us 601 Calhoun County
- Landing Lane Calhoun County
Track J A Moss 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 J A Moss Dam
Where does the data for J A Moss 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 J A Moss Dam.