Marissa Recreation Association South Lake Dam dam
Marissa Recreation Association South Lake Dam
The Marissa Recreation Association South Lake Dam, located in St. Clair County, Illinois, is a privately owned earth dam designed by the USDA NRCS and completed in 1954. With a height of 32 feet and a length of 540 feet, the dam serves primarily for recreation purposes, offering a storage capacity of 313 acre-feet and a surface area of 21 acres. The dam is regulated by the Illinois Department of Natural Resources and undergoes regular inspections to ensure its safety and integrity.
This significant dam on the TRIB MUD CREEK tributary features an uncontrolled spillway with a width of 85 feet and a maximum discharge of 230 cubic feet per second. Although its hazard potential is categorized as significant, the risk assessment deems it moderate. The dam's condition assessment is not available, and there is no Emergency Action Plan (EAP) prepared. The Marissa Recreation Association South Lake Dam stands as a vital structure for water resource management and climate resilience in the area, highlighting the importance of maintaining and monitoring its functionality for the surrounding community.
As a key component of the Marissa Recreation Association South Lake, this dam plays a crucial role in providing recreational opportunities while also ensuring water storage and management for the region. With its historic significance and structural design, the dam represents a blend of natural resource conservation and public enjoyment. The ongoing regulatory oversight and inspection processes contribute to the dam's operational efficiency and safety, showcasing a commitment to sustainable water resource management and environmental stewardship in the face of changing climatic conditions.
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 Marissa Recreation Association South Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Kaskaskia River At New Athens | 12,200 cfs | → |
| Silver Creek Near Freeburg | 1,670 cfs | → |
| Richland Creek Near Hecker | 462 cfs | → |
| Kaskaskia River Near Venedy Station | 10,300 cfs | → |
| Little Crooked Creek Near New Minden | 24 cfs | → |
| Mississippi River At Chester | 270,000 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Marissa Recreation Association South Lake Dam.
Boat launches
- Randolph County
- Il 13 New Athens
- North 1st Street 2252, Fayetteville
- Phegley Resort Lane Randolph County
- Water Street Chester
- St Ellen Mine Trail O'Fallon
Campgrounds
- Randolph County State Conservation Area
- Washington County Lake State Conservation Area
- Fort Kaskaskia State Park
- Pyramid State Park
- Scott Afb Military
- Johnson Creek
Track Marissa Recreation Association South 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 Marissa Recreation Association South Lake Dam
Where does the data for Marissa Recreation Association South 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 Marissa Recreation Association South Lake Dam.