Mcdonough Ash Pond # 4 Dam dam
Mcdonough Ash Pond # 4 Dam
Mcdonough Ash Pond # 4 Dam, located in Smyrna, Georgia, was completed in 1974 by the Georgia Power Company. This private dam serves a primary purpose that is classified as 'Other', with a design primarily consisting of Earth and Buttress core types. Standing at 75 feet tall and spanning a length of 4440 feet, the dam has a storage capacity of 1800 acre-feet and a surface area of 50 acres.
Despite being regulated by the GA-SAFE DAMS PROGRAM and having undergone inspections in 2016, the dam carries a Hazard Potential rating of 'High'. However, its overall condition assessment was reported as 'Satisfactory'. With a moderate risk assessment score of 3, the dam's emergency action plan status and risk management measures remain unspecified. While the dam may pose certain risks, its operational status and compliance with state regulations suggest a level of stability in its function and safety protocols.
Water resource and climate enthusiasts monitoring Mcdonough Ash Pond # 4 Dam should be aware of its location in Cobb County, Georgia, and its association with the Georgia Power Company. The dam's high hazard potential underscores the importance of continued inspections and risk management efforts to ensure the safety of surrounding communities and the integrity of the water resource infrastructure. The data provided offers a snapshot of the dam's specifications, regulatory oversight, and risk assessment, highlighting the complex considerations involved in managing and maintaining critical water structures 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 Mcdonough Ash Pond # 4 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Chattahoochee River At Ga 280 | 877 cfs | → |
| Nancy Creek At West Wesley Road | 11 cfs | → |
| Proctor Creek At Jackson Parkway | 4 cfs | → |
| Chattahoochee River At Atlanta | 963 cfs | → |
| Nickajack Creek At Us 78/278 | 7 cfs | → |
| Peachtree Creek At Atlanta | 28 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mcdonough Ash Pond # 4 Dam.
Boat launches
- Cobb Parkway South Vinings
- West Palisades Vinings
- Riveredge Lane Northwest Sandy Springs
- Johnson Ferry Road Southeast Sandy Springs
- Hooch Boat Ramp
- Chattahochee River Park Peachtree Corners
Campgrounds
- Dobbins Lakeside Military
- Stone Mountain Park Campground
- Stone Mountain Campground
- Payne - Allatoona Lake
- Clark Creek South - Allatoona Lake
- Clark Creek North - Allatoona Lake
Fishing spots
Track Mcdonough Ash Pond # 4 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 Mcdonough Ash Pond # 4 Dam
Where does the data for Mcdonough Ash Pond # 4 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 Mcdonough Ash Pond # 4 Dam.