Mt. Olive City Lake Dam dam
Mt. Olive City Lake Dam
Located in Eager-ville, Illinois, the Mt. Olive City Lake Dam is a vital water resource infrastructure managed by the local government. Built in 1938 by the USDA NRCS, this earth dam stands at a height of 31 feet and spans 470 feet in length, creating a reservoir with a normal storage capacity of 457 acre-feet. The dam serves primarily for water supply, drawing water from Panther Creek to meet the needs of the surrounding community.
Managed by the Illinois Department of Natural Resources, the Mt. Olive City Lake Dam is regulated, inspected, and enforced to ensure its safety and functionality for water management. With a low hazard potential and moderate risk assessment, this dam plays a crucial role in water resource management in Macoupin County, Illinois. Despite its age, the dam continues to serve its purpose effectively, with no reported condition assessment indicating any immediate concerns for its structural integrity.
Surrounded by a surface area of 2 acres and draining a small watershed of 0.01 square miles, the Mt. Olive City Lake Dam stands as a testament to sustainable water management practices. While lacking detailed risk management measures and emergency action plans, the dam remains a key component of the local water infrastructure, providing essential water supply services to the community. For water resource and climate enthusiasts, the Mt. Olive City Lake Dam represents a blend of historical significance and modern-day utility in managing water resources in Illinois.
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 Mt. Olive City Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Fork Shoal Creek Near Coffeen | 627 cfs | → |
| Cahokia Creek At Edwardsville | 2,300 cfs | → |
| Indian Creek At Wanda | 173 cfs | → |
| Shoal Creek Nr Pierron | 2,160 cfs | → |
| Silver Creek Near Troy | 556 cfs | → |
| Judys Branch At Rte 157 At Glen Carbon | 0 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mt. Olive City Lake Dam.
Track Mt. Olive City 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 Mt. Olive City Lake Dam
Where does the data for Mt. Olive City 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 Low 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 Mt. Olive City Lake Dam.