Coffeen Power Sta. Supplemental Cooling Lake Dam dam
Coffeen Power Sta. Supplemental Cooling Lake Dam
The Coffeen Power Station Supplemental Cooling Lake Dam in Illinois, designed by SARGENT & LUNDY, stands as a crucial structure for water resource and climate enthusiasts. Completed in 2000, this earth dam spans 8485 feet and reaches a height of 21 feet, offering a storage capacity of 735 acre-feet. Located in Montgomery County, the dam plays a vital role in managing the water supply for the Coffeen community and surrounding areas.
Maintained by the Illinois Department of Natural Resources, the dam is inspected every three years to ensure its safety and integrity. With a significant hazard potential, the Coffeen Power Station Supplemental Cooling Lake Dam is equipped with a controlled spillway and slide gates for efficient water release. The risk assessment for this dam is rated at a very high level, emphasizing the importance of regular monitoring and upkeep to mitigate potential dangers.
As a critical infrastructure in the region, the Coffeen Power Station Supplemental Cooling Lake Dam serves as a testament to the intersection of water resource management and climate resilience. With its strategic location on the TRIB MCDAVID BRANCH tributary and state-regulated status, this dam stands as a cornerstone in ensuring water availability and safety for the Coffeen community and beyond.
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 Coffeen Power Sta. Supplemental Cooling Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Fork Shoal Creek Near Coffeen | 18 cfs | → |
| Hurricane Creek Near Mulberry Grove | 53 cfs | → |
| Kaskaskia River At Vandalia | 2,210 cfs | → |
| Shoal Creek Nr Pierron | 471 cfs | → |
| Hickory Creek Nr Brownstown | 14 cfs | → |
| East Fork Kaskaskia River Near Sandoval | 32 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Coffeen Power Sta. Supplemental Cooling Lake Dam.
Boat launches
- Beach House Trail 4292, Litchfield
- Tamalco Bond County
- County Road 175 North Fayette County
- Highland Park Road Highland
- Hazlet State Park Boat Ramp
Track Coffeen Power Sta. Supplemental Cooling 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 Coffeen Power Sta. Supplemental Cooling Lake Dam
Where does the data for Coffeen Power Sta. Supplemental Cooling 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 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 Coffeen Power Sta. Supplemental Cooling Lake Dam.