Mercier Dam dam
Mercier Dam
Mercier Dam, located in Fannin, Georgia, serves as a crucial structure for enhancing fish and wildlife habitats in the area. Built in 1981 by the Natural Resources Conservation Service, the earth dam stands at a height of 27 feet and spans 250 feet in length. With a primary purpose of creating a fish and wildlife pond, the dam also supports irrigation and recreation activities in the region.
Despite its low hazard potential, Mercier Dam has a moderate risk level assigned to it, indicating the need for ongoing monitoring and management measures. The dam has a maximum storage capacity of 26 acre-feet and a normal storage capacity of 16 acre-feet, serving a drainage area of 0.05 square miles. The spillway, with a width of 20 feet, is of the uncontrolled type, allowing for controlled release of excess water during peak flow periods.
Water resource and climate enthusiasts will appreciate the role of Mercier Dam in supporting local ecosystems and recreational activities. As a private-owned structure, the dam underscores the importance of collaborative efforts between government agencies and private entities in managing water resources sustainably. With its strategic location on Tr- Little Sugar Creek, Mercier Dam stands as a testament to the balance between human needs and environmental conservation in the region.
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 Mercier Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Ocoee River At Copperhill | 385 cfs | → |
| Toccoa River Near Dial | 236 cfs | → |
| Cartecay River Near Ellijay | 135 cfs | → |
| Coosawattee River Near Ellijay | 243 cfs | → |
| Mill Creek Near Crandall | 4 cfs | → |
| Fausett Creek Near Talking Rock | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mercier Dam.
Boat launches
- Mallard Point Road 109, Fannin County
- Toccoa Avenue 104, Mccaysville
- Jack's Creek Boat Ramp
- Nottely Dam Road Union County
- Watts Place South Union County
- Lake Conasauga Murray County
Campgrounds
- Morganton Point Campground
- Morganton Point
- Toccoa River Sandy Bottoms Recreation Area
- Jacks River Fields
- Jacks River Fields Campground
- Tumbling Creek
Fishing spots
Paddle runs
- Source In Cohutta Wilderness To Nf Boundary North Of Murray's Lake
- Southern Boundary Cohutta Wilderness Near Peter Cove To Northern Boundary Cohutta Wilderness Near Alaculsy
- Northern Boundary Cohutta Wilderness To Confluence With Conasauga River
- Nf Boundary To Taylor's Creek In Cherokee Nf (Tn)
- Taylors Creek (Rm 74.5) To Nf Boundary (Rm 70.0)
- Apalachia Powerhouse (Rm 53.5) To Us411 Bridge (Rm 43.0)
Track Mercier 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 Mercier Dam
Where does the data for Mercier 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 Mercier Dam.