Green Mt. Lake dam
Green Mt. Lake
Green Mt. Lake, located in Madison, Alabama, is a picturesque Earth-type dam built in 1974 by the USDA NRCS for the primary purpose of serving as a Fish and Wildlife Pond. This 21-foot tall structure holds a maximum storage capacity of 186 acre-feet, with a normal storage level of 120 acre-feet. The dam is situated on the TR-TENNESSEE RIVER, within the jurisdiction of the Mobile District of the USACE.
Despite not being state-regulated, Green Mt. Lake poses a significant hazard potential due to its design and storage capacity, with a moderate risk assessment rating of 3. The spillway, classified as uncontrolled, has a width of 50 feet to manage potential overflow. The dam, being non-federally owned, is primarily funded and designed by the Natural Resources Conservation Service, emphasizing its local government ownership and operation for recreational and ecological purposes.
Enthusiasts of water resources and climate will appreciate Green Mt. Lake for its conservation efforts and habitat enhancement, providing a serene environment for wildlife and recreational activities in the heart of Alabama. The lake serves as a vital ecosystem component, showcasing the importance of sustainable water management practices and the collaboration between federal agencies and local governments to maintain and monitor dam safety and integrity.
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 Green Mt. Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Aldridge Creek Near Farley Al | 93 cfs | → |
| Aldridge C At Sherwood Dr Nr Huntsville | 91 cfs | → |
| Aldridge Creek At Toney Drive At Huntsville | 80 cfs | → |
| Big Cove Creek At Dug Hill Road Nr Huntsville | 101 cfs | → |
| Huntsville Sp Br At Johnson Road | 588 cfs | → |
| Mcdonald Creek At Patton Road Nr Huntsville Al | 206 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Green Mt. Lake.
Boat launches
- Hobbs Island Road Southeast Huntsville
- Sunnyside Park Morgan County
- Sharp Ford Road Morgan County
- Painted Bluff Road Marshall County
- Snow Point Road Marshall County
- Bluff City Boat Ramp Access Road Morgan County
Campgrounds
- Ditto Landing City Campground
- Redstone Arsenal Rv Military
- Easter Posey Mwr Military - Redstone Arsenal
- Monte Sano State Park
- Cathedral Caverns State Park
- Georgia Mountain Rv Resort
Fishing spots
Track Green Mt. Lake 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 Green Mt. Lake
Where does the data for Green Mt. Lake 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 Significant 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 Green Mt. Lake.