Mcgrady Dam dam
Mcgrady Dam
Mcgrady Dam, nestled in Colleton, South Carolina, stands as a critical water resource structure on Black Creek. This private dam, with a buttress core type and a height of 10 feet, boasts a storage capacity of 758 acre-feet, providing essential water storage for the region. With its high hazard potential and unsatisfactory condition assessment, Mcgrady Dam is closely regulated by the South Carolina Department of Health and Environmental Control, ensuring its safety and functionality.
Despite its crucial role in water management, Mcgrady Dam faces challenges, evident in its high hazard rating and unsatisfactory condition assessment. Regular inspections and enforcement are in place to address these concerns, emphasizing the importance of maintaining the dam's integrity for the safety of surrounding communities and the environment. The dam's location on Black Creek highlights its significance in mitigating flood risks and ensuring a stable water supply for the region.
As climate change impacts water resources and infrastructure, the management and upkeep of dams like Mcgrady Dam become increasingly vital. With a moderate risk assessment and a history of modifications to enhance safety, Mcgrady Dam remains a key player in water resource management in South Carolina. As enthusiasts of water resources and climate resilience, understanding the role and condition of structures like Mcgrady Dam is essential for ensuring sustainable water management practices in the face of evolving environmental challenges.
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 Mcgrady Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Salkehatchie River Near Miley | 60 cfs | → |
| Coosawhatchie River Near Hampton | · | → |
| Edisto River Nr Givhans | 477 cfs | → |
| Savannah River Near Clyo | 4,860 cfs | → |
| South Fork Edisto River Near Bamberg | 215 cfs | → |
| South Fork Edisto River Near Cope | 217 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mcgrady Dam.
Boat launches
Fishing spots
Track Mcgrady 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 Mcgrady Dam
Where does the data for Mcgrady 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 Mcgrady Dam.