Patterson Lake dam
Patterson Lake
Patterson Lake in Calhoun, Alabama, is a private water resource primarily built for flood risk reduction. This Earth type dam with a height of 11 feet and a length of 300 feet provides a maximum storage capacity of 49 acre-feet. Despite its normal storage capacity being listed as zero, the lake covers an area of 7 acres and is associated with TALLASSEEHACHEE CREEK TRIB 1.
Owned privately, Patterson Lake does not fall under state jurisdiction or regulation, indicating a high hazard potential. With no state permitting, inspection, or enforcement, the dam's condition assessment remains unrated. Although the dam's emergency action plan status is unspecified, its purpose also extends to recreation, making it a noteworthy site for water resource and climate enthusiasts to explore in Jacksonville.
For water resource and climate enthusiasts, Patterson Lake offers a unique perspective on flood risk reduction and recreational opportunities in the area. The dam's association with the TALLASSEEHACHEE CREEK TRIB 1 and its location within Congressional District 03, Alabama, adds to its significance. Despite lacking certain regulatory oversight and a condition assessment, the lake's high hazard potential highlights the importance of monitoring and managing its risk for the benefit of the local community and environment.
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 Patterson Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Choccolocco Creek Near Boiling Spring | 143 cfs | → |
| Tallapoosa River Near Heflin | 248 cfs | → |
| Terrapin Creek At Ellisville Al | 492 cfs | → |
| Tallapoosa River Below Tallapoosa | 133 cfs | → |
| Big Wills Creek Near Reece City | 117 cfs | → |
| Choccolocco Creek At Jackson Shoal Nr Lincoln Al | 407 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Patterson Lake.
Boat launches
- Coleman Boat Ramp Road Cleburne County
- Ohatchee
- St. Clair County
- Lonz Street 206, Gadsden
- Broad Street Gadsden
- Riverview Drive St. Clair County
Campgrounds
- Pine Glen
- Pine Glen Recreation Area
- Coleman Lake Recreation Area
- Coleman Lake Rec Area
- Big Oak Gap Hunter Camp
- Chief Ladiga Trail Campground
Fishing spots
Paddle runs
- Begins One Mile Upstream From Al 273 Bridge To Lake Weiss
- Al 35 Bridge To Ends One Mile Upstream From Al 273 Bridge
- Confluence With East And West Branches To Al 37 Bridge
- River Miles 8 Near Ga Sate Line To Confluence With Little River
- Desoto Falls In Desoto State Park To Confluence With Little River
More reservoirs
Track Patterson 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 Patterson Lake
Where does the data for Patterson 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 High 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 Patterson Lake.