Mcinnis Pond Dam dam
Mcinnis Pond Dam
Mcinnis Pond Dam, located in Marlboro, South Carolina, was completed in 1950 and stands at a height of 12 feet with a length of 560 feet. The primary purpose of this earth dam, with a buttress core type, is for recreation, providing a storage capacity of 63 acre-feet and a surface area of 9 acres. Although the dam is classified as having a low hazard potential, its condition assessment in 2017 revealed poor structural integrity, making it a moderate risk for potential failure.
Managed by a private owner, the Mcinnis Pond Dam is regulated by the South Carolina Department of Health and Environmental Control (DHEC) and undergoes regular state inspections and enforcement measures. The dam's spillway type is uncontrolled, with no outlet gates, locks, or associated structures. Despite its poor condition assessment, the dam has not been modified in recent years, and the last inspection in 2017 recommended an inspection frequency of every 5 years.
For water resource and climate enthusiasts, the Mcinnis Pond Dam serves as a focal point for understanding the importance of maintaining and monitoring infrastructure to ensure public safety and environmental protection. With a risk management plan in place and a moderate risk assessment, there is a need for continued evaluation and potential rehabilitation efforts to mitigate any potential hazards associated with this recreational structure along the TR-Hagins Prong stream 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 Mcinnis Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pee Dee River Nr Bennettsville | 2,080 cfs | → |
| Big Shoe Heel Creek Nr Laurinburg | 16 cfs | → |
| Lumber River Near Maxton | 96 cfs | → |
| Black Creek Near Quinby | 137 cfs | → |
| Pee Dee River At Peedee | 2,160 cfs | → |
| Pee Dee R Nr Rockingham | 1,880 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mcinnis Pond Dam.
Boat launches
Campgrounds
- Bass Lake Campground
- Cheraw State Park
- H. Cooper Black
- John Culberth Campsite
- Little Pee Dee State Park
- Chalk Banks - Lumber River State Park
Track Mcinnis 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 Mcinnis Pond Dam
Where does the data for Mcinnis 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 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 Mcinnis Pond Dam.