Graham Dam dam
Graham Dam
Graham Dam, located in Vienna, Louisiana, serves as a vital water resource for the surrounding area. Built in 1976 by the USDA NRCS, this earth dam stands at a height of 14 feet and has a length of 468 feet. The primary purpose of Graham Dam is to provide a fish and wildlife pond, while also serving functions such as fire protection, stock, and recreation.
With a storage capacity of 103 acre-feet, Graham Dam plays a crucial role in managing water levels and ensuring the availability of water for various uses. The dam's spillway, with a width of 80 feet, helps regulate water flow during periods of high discharge. Despite being classified as having a low hazard potential, the dam's condition assessment is rated as poor, highlighting the need for ongoing maintenance and improvements to ensure its long-term safety and effectiveness.
As climate change continues to impact water resources and ecosystems, Graham Dam remains a key infrastructure for supporting biodiversity and recreational activities in the area. With its moderate risk assessment rating, there is a growing recognition of the importance of investing in the upkeep and modernization of dams like Graham to adapt to changing environmental conditions and ensure sustainable water management practices 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 Graham Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Corney Bayou Near Lillie | 257 cfs | → |
| Saline Bayou Near Lucky | 243 cfs | → |
| Dugdemona River Near Joyce | 36 cfs | → |
| Bayou Lafourche Near Crew Lake | 5,570 cfs | → |
| Bayou Dorcheat Near Springhill | 65 cfs | → |
| Boeuf River Nr Girard | 205 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Graham Dam.
Boat launches
- State Park Ranger Road Union Parish
- Simmon Hole Road Union Parish
- Dogwood Lane Union Parish
- State Route 2 Farmerville
- Hog Pen Road Union Parish
Track Graham 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 Graham Dam
Where does the data for Graham 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 Graham Dam.