Mendoza Lake Dam dam
Mendoza Lake Dam
Mendoza Lake Dam, located in Gwinnett, Georgia, is a private-owned structure designed by Southeast Consultants. Situated along Hale Creek in Stone Mountain, this earth-type dam stands at 16 feet tall and spans 300 feet in length. With a primary purpose of recreation, the dam provides a storage capacity of 70 acre-feet, with a normal storage level of 64 acre-feet.
Despite being unregulated by the state and having a low hazard potential, Mendoza Lake Dam poses a moderate risk (3) according to the risk assessment. The dam features an uncontrolled spillway and outlet gates, with no associated structures or locks. The condition of the dam is currently not rated, and there is no information on the last inspection date or emergency action plan preparedness.
Water resource and climate enthusiasts visiting Mendoza Lake Dam can appreciate its picturesque setting and recreational opportunities. While the dam may present a moderate risk, its low hazard potential and uncontrolled spillway suggest a manageable situation. Further monitoring and assessment may be needed to ensure the safety and integrity of this important water resource in Georgia.
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 Mendoza Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| N.F. Peachtree Creek At Graves Rd | 0 cfs | → |
| Yellow River At Ga 124 | 78 cfs | → |
| No Business Creek At Lee Road | 2 cfs | → |
| Big Haynes Creek At Lenora Road | 9 cfs | → |
| Yellow River At Pleasant Hill Rd | 84 cfs | → |
| Chattahoochee River Near Norcross | 1,070 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mendoza Lake Dam.
Boat launches
- Chattahochee River Park Peachtree Corners
- Saint Ives Country Club Parkway Johns Creek
- Lake Windward Landing 139, Alpharetta
- Johnson Ferry Road Southeast Sandy Springs
- West Palisades Vinings
- Riveredge Lane Northwest Sandy Springs
Campgrounds
- Stone Mountain Park Campground
- Stone Mountain Campground
- James Shackleford County Park
- Shoal Creek - Lake Lanier
- Sawnee
- Dobbins Lakeside Military
Fishing spots
Track Mendoza 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 Mendoza Lake Dam
Where does the data for Mendoza 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 Mendoza Lake Dam.