Stonegate Lake Dam dam
Stonegate Lake Dam
Stonegate Lake Dam, located in Fulton County, Georgia, is a private earth dam primarily used for recreation purposes. Standing at a height of 28 feet with a structural height of 26 feet, this dam provides a storage capacity of 96 acre-feet and covers a surface area of 7 acres. Despite its small size, the dam is considered to have a high hazard potential and poor condition assessment, with the last inspection date dating back to February 2016.
Managed by the Georgia SAFE DAMS Program, Stonegate Lake Dam is subject to state regulation, inspection, and enforcement. The dam features an uncontrolled spillway and outlet gates, with a drainage area of 100 acres. While the risk assessment categorizes the dam as moderate, there are no documented risk management measures in place. Additionally, the dam has not been modified in recent years, raising concerns about its current safety and structural integrity.
Water resource and climate enthusiasts interested in Stonegate Lake Dam should be aware of its outdated inspection and condition assessment data, as well as its high hazard potential. As a private recreational dam, it plays a crucial role in providing water storage and leisure activities in the Roswell area. However, the lack of recent maintenance and risk management measures poses potential risks to the surrounding community and environment, highlighting the need for regular monitoring and maintenance of this essential water infrastructure.
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 Stonegate Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Chattahoochee River Below Morgan Falls Dam | 1,020 cfs | → |
| Chattahoochee River Above Roswell | 1,100 cfs | → |
| Sope Creek Near Marietta | 11 cfs | → |
| Big Creek Near Alpharetta | 34 cfs | → |
| Noonday Creek At Hawkins Store Rd | 7 cfs | → |
| Noonday Creek At Shallowford Road | 13 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Stonegate Lake Dam.
Boat launches
- Johnson Ferry Road Southeast Sandy Springs
- Lake Windward Landing 139, Alpharetta
- Riveredge Lane Northwest Sandy Springs
- West Palisades Vinings
- Chattahochee River Park Peachtree Corners
- Cobb Parkway South Vinings
Campgrounds
- Dobbins Lakeside Military
- Payne - Allatoona Lake
- Victoria - Allatoona Lake
- Sweetwater - Allatoona Lake
- Clark Creek South - Allatoona Lake
- Clark Creek North - Allatoona Lake
Fishing spots
Track Stonegate 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 Stonegate Lake Dam
Where does the data for Stonegate 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 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 Stonegate Lake Dam.