Holmes Long Bch Dam dam
Holmes Long Bch Dam
Holmes Long Bch Dam, also known as James A Derrick Dam, is a privately owned structure located in Aiken, South Carolina. Completed in 1978, this earth dam stands at a height of 24 feet and spans a length of 650 feet. With a primary purpose of irrigation, the dam has a storage capacity of 140 acre-feet, providing essential water resources for the surrounding area.
Maintained by the South Carolina Department of Health and Environmental Control, Holmes Long Bch Dam is regulated, inspected, and enforced to ensure its safety and functionality. Despite being classified as having a low hazard potential, the dam's condition is assessed as fair as of August 2017. It has a regular inspection frequency of every five years, with the last assessment taking place in August 2017.
Situated along the TR-LONG BRANCH river, Holmes Long Bch Dam plays a crucial role in water resource management in the region. With its strategic location and vital purpose of irrigation, this dam serves as a significant asset for the community and contributes to the sustainable utilization of water in South Carolina.
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 Holmes Long Bch Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mctier Creek (Rd 209) Near Monetta | 20 cfs | → |
| Augusta Canal Nr Augusta (Upper) | 2,130 cfs | → |
| Stevens Creek Near Modoc | 1,300 cfs | → |
| Savannah River At Augusta | 4,580 cfs | → |
| Bush River Nr Prosperity | 387 cfs | → |
| Butler Creek Below 7th Avenue | 27 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Holmes Long Bch Dam.
Boat launches
- Burnettown
- Mccormick County
- 844 Riverbend Point, Leesville, Sc 29070
- Sandlapper Way 159, Lexington County
- Cabana Way Lexington County
- Eastshore Drive 143, Lexington County
Campgrounds
- Aiken State Park
- Lick Fork Lake
- Lick Fork Lake Recreation Area
- Boggy Campground
- Faulkner Mountain Campground
- Hamilton Branch State Park
Fishing spots
Track Holmes Long Bch 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 Holmes Long Bch Dam
Where does the data for Holmes Long Bch 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 Holmes Long Bch Dam.