Marshman Lake Dam dam
Marshman Lake Dam
Marshman Lake Dam, located in Banks, Georgia, was completed in 1950 and is primarily used for recreation purposes. The dam is privately owned and stands at 19 feet high, with a hydraulic height of 15 feet. It has a storage capacity of 60 acre-feet, with a normal storage level of 35 acre-feet. The dam is classified as an earth dam with a buttress core type, and it spans a length of 630 feet.
Although Marshman Lake Dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment, it poses a moderate risk (3) due to its age and lack of recent inspections. The dam has uncontrolled spillways and outlet gates, with no associated locks. Despite not being regulated by the state, the dam falls within the jurisdiction of the Savannah District of the US Army Corps of Engineers.
For water resource and climate enthusiasts, Marshman Lake Dam offers a glimpse into the engineering and management of water infrastructure in Georgia. With its serene surroundings and recreational opportunities, the dam serves as a valuable asset to the local community while also highlighting the importance of ongoing monitoring and maintenance to ensure safety and sustainability for the future.
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 Marshman Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Chattahoochee River Near Cornelia | 280 cfs | → |
| Chattahoochee River Near Leaf | 153 cfs | → |
| Middle Oconee River Near Arcade | 129 cfs | → |
| North Oconee River At College St | 65 cfs | → |
| Middle Oconee River Near Athens | 141 cfs | → |
| Tallulah River Ab Powerhouse | 39 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Marshman Lake Dam.
Boat launches
- Hall County
- Stephens County
- Tugaloo Point Franklin County
- Mullins Ford Landing Road 205, Westminster
- Choestoea Road Oconee County
- Tugaloo State Park Road Franklin County
Campgrounds
- Lake Russell Recreation Area
- Lake Russell
- Victoria Bryant State Park
- Toccoa Falls College Rv Park
- Laurel Park - Lake Lanier
- Tugaloo State Park
Fishing spots
Paddle runs
- Confluence Of Brasstown Creek And Little Brasstown Creek Just South Of Brasstown Falls Road (Fs 751) To Confluence Of Mill Branch, Brasstown Creek And Boatwright Creek Near Boatwright Road (Fs 753)
- Confluence Of Cedar Creek To 1/4 Mile Below The Nf Boundary And Fh 110, Cobbs Bridge Road
- South Of Cedar Creek Rifle Range To Confluence With Chauga River
- 1/4 Mile Below Fs 745 And Cassidy Bridge Hunt Camp To Confluence Of Cedar Creek
- Crpssing Of Land Bridge Road, Sc 196 To 1/4 Mile Below Fs 745 And Cassidy Bridge Hunt Camp
- Martin Branch Bridge To Robertsontown Bridge On Ga Highway 356
Track Marshman 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 Marshman Lake Dam
Where does the data for Marshman 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 Marshman Lake Dam.