Shelbyville Dam dam
Shelbyville Dam
Shelbyville Dam, also known as Lake Shelbyville, is a concrete dam located in Shelby, Illinois, along the Kaskaskia River. Built in 1970 by the US Army Corps of Engineers, the dam stands at a height of 108 feet and has a structural height of 138 feet. With a storage capacity of over 1 million acre-feet and a maximum discharge of 162,500 cubic feet per second, the dam serves primarily for flood risk reduction, but also supports fish and wildlife habitat, navigation, recreation, and water supply.
The dam's high hazard potential is mitigated through regular inspections, emergency action plans, and risk management measures implemented by the US Army Corps of Engineers. In case of severe weather events or pressure on the dam, controlled releases of water are performed to maintain its structural integrity. The agency collaborates with local emergency managers to ensure public safety and preparedness in the event of a dam-related emergency. With a focus on continual monitoring and maintenance, the USACE works to minimize flood risks associated with the dam and protect downstream communities.
Overall, Shelbyville Dam plays a crucial role in managing water resources in the region and serves as a vital infrastructure for flood control and water supply. With its strategic location and effective risk management practices, the dam stands as a testament to the dedication of the US Army Corps of Engineers in safeguarding communities and the environment from potential hazards.
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 Shelbyville Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Kaskaskia River At Shelbyville | 767 cfs | → |
| Robinson Creek Near Shelbyville | 138 cfs | → |
| Kaskaskia River Near Cowden | 1,850 cfs | → |
| Whitley Creek Near Allenville | 46 cfs | → |
| Kaskaskia River At Cooks Mills | 414 cfs | → |
| West Okaw River Near Lovington | 270 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Shelbyville Dam.
Track Shelbyville 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 Shelbyville Dam
Where does the data for Shelbyville 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 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 Shelbyville Dam.