John Wilson Dam dam
John Wilson Dam
John Wilson Dam, located in Newberry, South Carolina, is a privately owned earth dam standing at a height of 26 feet and stretching 600 feet in length. This dam, built on TR-Turners Branch river or stream, serves the primary purpose of water storage with a capacity of 120 acre-feet and a normal storage level of 64 acre-feet. The dam features a controlled spillway type and has a hazard potential rated as low with fair overall condition assessment.
Managed by the South Carolina Department of Health and Environmental Control, John Wilson Dam is subject to state regulation, inspection, and enforcement. The dam poses a very high risk, marked as 1 on the risk assessment scale, emphasizing the importance of regular monitoring and maintenance to ensure its structural integrity and safety. With a history of last inspection in December 2017, the dam is deemed to meet guidelines for emergency action planning, but there is a need for updated emergency contacts and inundation maps for effective risk management.
Water resource and climate enthusiasts interested in John Wilson Dam can appreciate its significance in the local water infrastructure, its role in regulating water flow, and the potential impact of its risk level on downstream areas. This earth dam stands as a vital structure in managing water resources in the region, highlighting the importance of proactive measures to mitigate any potential hazards associated with its operation.
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 John Wilson Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little River Nr Silverstreet | 114 cfs | → |
| Saluda River At Chappells | 1,060 cfs | → |
| Bush River Nr Prosperity | 58 cfs | → |
| Lake Greenwood Tailrace Nr Chappells | 930 cfs | → |
| Enoree River At Whitmire | 279 cfs | → |
| Broad River At Alston | 2,370 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near John Wilson Dam.
Boat launches
- Arrowhead Drive Greenwood County
- 844 Riverbend Point, Leesville, Sc 29070
- Sassafras Lane Newberry County
- Park Marina Drive 79, Newberry County
- Broad River Road Newberry County
Campgrounds
- Lake Greenwood State Park
- Brick House Campground
- Brick House
- Boggy Campground
- Dreher Island State Rec Area
- Faulkner Mountain Campground
Fishing spots
Track John Wilson 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 John Wilson Dam
Where does the data for John Wilson 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 John Wilson Dam.