Impoundment No. 3 dam
Impoundment No. 3
Impoundment No. 3 in Jefferson, Alabama is a privately owned water resource structure with a significant hazard potential. This dam, standing at a height of 80 feet, has the capacity to hold a maximum discharge of 1100 cubic feet of water. Despite its critical importance, the dam's condition assessment remains unrated, highlighting a need for further inspection and maintenance to ensure its long-term safety and functionality.
Located in Graysville, Impoundment No. 3 is under the jurisdiction of the Mobile District of the US Army Corps of Engineers. While the dam's primary purpose and design details are not specified, its role in water storage and regulation within the region is evident. The dam lacks associated structures and has not undergone recent inspections, raising concerns about its resilience in the face of potential climate impacts or emergencies.
As climate change continues to pose challenges to water resources management, the upkeep and monitoring of structures like Impoundment No. 3 become crucial for ensuring community safety and environmental sustainability. With its location in a high-risk area and limited regulatory oversight, efforts to assess and address the dam's condition and emergency preparedness are essential for mitigating potential risks and safeguarding the local community's water supply.
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 Impoundment No. 3 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Locust Fork At Sayre | 352 cfs | → |
| Village Creek Near Docena | 35 cfs | → |
| Fivemile Creek Near Republic | 23 cfs | → |
| Mulberry Fork At Cordova Al | 75 cfs | → |
| Village Creek Near Pratt City | 39 cfs | → |
| Village Creek At Avenue W At Ensley | 29 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Impoundment No. 3.
Boat launches
- Dickey Camp Road Jefferson County
- Bevill Drive Cordova
- Highway 78 8090, Cordova
- Smith Lake Dam Road 8067-8697, Jasper
- Lick Creek Boat Ramp
- Old Mill Trail 7098, Clay
Campgrounds
- Rickwood Caverns State Park
- Burchfield Branch Park
- Hoover Rv Park
- Blue Creek
- Oak Mountain State Park
- Campground #2
Track Impoundment No. 3 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 Impoundment No. 3
Where does the data for Impoundment No. 3 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 Impoundment No. 3.