Grinages Lake Dam dam
Grinages Lake Dam
Grinages Lake Dam, also known as Mccord South Dam, is a private-owned structure located in Fayetteville, Georgia. Built in 1968, this earth dam stands at a height of 27 feet and spans a length of 380 feet. With a primary purpose of recreation, the dam offers a surface area of 9 acres and a storage capacity of 113 acre-feet. Although the dam is not regulated by the state, it undergoes regular inspections, with the last one conducted in May 2015.
The dam's low hazard potential and moderate risk assessment make it a relatively safe structure, despite being uncontrolled in terms of spillway type and outlet gates. The surrounding area, including Grinages Lake, provides a serene recreational environment for visitors to enjoy water-based activities. Not rated for its condition assessment, the dam serves as a vital component for water resource management in the region, showcasing the importance of sustainable infrastructure in the face of climate change challenges.
For water resource and climate enthusiasts, Grinages Lake Dam offers a fascinating case study of a privately-owned earth dam that plays a crucial role in providing recreational opportunities while managing water storage in Fayetteville, Georgia. Its design and construction details, coupled with its operational aspects and risk assessment, highlight the significance of maintaining and monitoring such structures to ensure their safety and effectiveness in the face of evolving environmental conditions.
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 Grinages Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Line Creek Near Senoia | 15 cfs | → |
| Flint River Near Lovejoy | 43 cfs | → |
| Flint River Near Griffin | 67 cfs | → |
| Shoal Creek At Shoal Creek Rd | 8 cfs | → |
| Pates Creek At Buster Lewis Rd Near Flippen | 12 cfs | → |
| Chattahoochee River Near Fairburn | 1,170 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Grinages Lake Dam.
Boat launches
- Peachtree Parkway 488, Shake Rag
- 1124 Peachtree City
- Pine Crest Drive 127, Peachtree City
- Burch Lake Road Fayette County
- West Mcintosh Road Spalding County
- Hooch Boat Ramp
Campgrounds
Fishing spots
- Padgett Lake
- Jester Creek
- Griffin City Reservoir
- Clayton County International Park
- George H Sparks Reservoir
- Chapel Hill Park
Track Grinages Lake 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 Grinages Lake Dam
Where does the data for Grinages Lake 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 Grinages Lake Dam.