Lexington Old Mill Pond Dam dam
Lexington Old Mill Pond Dam
Lexington Old Mill Pond Dam, located in Lexington, South Carolina, is a historic structure completed in 1900 with a primary purpose of recreation. This private dam on TWELVEMILE CREEK stands at a height of 24 feet, with a length of 475 feet, and a storage capacity of 440 acre-feet. The dam, made primarily of earth and stone, covers a surface area of 29 acres and serves as a source of water supply in addition to its recreational function.
Despite its scenic beauty and recreational value, the dam presents a high hazard potential and has been assessed as unsatisfactory in condition. The last inspection in October 2016 raised concerns about safety, prompting a biennial inspection frequency. The dam's emergency action plan (EAP) status is unclear, indicating a need for updated risk assessment and management measures. With its location in a residential area, the dam's safety and maintenance are crucial for public safety and environmental protection.
For water resource and climate enthusiasts, Lexington Old Mill Pond Dam offers a fascinating study in historic dam engineering, recreational significance, and the challenges of maintaining aging infrastructure. With its proximity to TWELVEMILE CREEK and its role in water supply, the dam's condition and risk factors underscore the importance of regular inspections, emergency preparedness, and sustainable management practices to ensure the safety and integrity of this iconic structure for future generations.
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 Lexington Old Mill Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Saluda River Below Lk Murray Dam Nr Columbia | 764 cfs | → |
| Saluda River Near Columbia | 1,190 cfs | → |
| Congaree River At Columbia | 4,640 cfs | → |
| Smith Branch At North Main St At Columbia | 2 cfs | → |
| Gills Creek At Columbia | 18 cfs | → |
| Broad River At Alston | 3,640 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lexington Old Mill Pond Dam.
Boat launches
- Highway 6 6, Columbia
- Cabana Way Lexington County
- Eastshore Drive 143, Lexington County
- Sandlapper Way 159, Lexington County
- Shull Island Boat Ramp
- Cove Launch Court Lexington County
Campgrounds
- Woodmen Of The World Park
- Dreher Island State Rec Area
- Sesquicentennial State Park
- Weston Lake Military - Fort Jackson
- Longleaf Campground
- Bluff Campground
Fishing spots
Paddle runs
Track Lexington Old Mill Pond 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 Lexington Old Mill Pond Dam
Where does the data for Lexington Old Mill Pond 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 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 Lexington Old Mill Pond Dam.