Dam Report

Eldorado Reservoir Dam dam

Illinois, USA Trib Wolf Creek Hazard Significant
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Tonight low
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Dam height
20ft
Hazard rating
Significant
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Eldorado Reservoir Dam -- None dam
Eldorado Reservoir Dam None · Trib Wolf Creek
About this dam

Eldorado Reservoir Dam

Eldorado Reservoir Dam, also known as Karel Park Lake Dam, is a public utility structure located in Muddy, Illinois. Completed in 1920, this earth dam stands at a height of 20 feet and spans 1200 feet in length, serving primarily as a water supply source. With a storage capacity of 1712 acre-feet, this dam plays a crucial role in managing water resources in Saline County, Illinois.

Managed by the Illinois Department of Natural Resources, Eldorado Reservoir Dam is regulated and inspected by state authorities to ensure its safety and functionality. The dam's spillway, with a width of 100 feet, is uncontrolled in nature, allowing for a maximum discharge of 2778 cubic feet per second. The dam's hazard potential is considered significant, with a moderate risk assessment rating of 3, highlighting the importance of ongoing monitoring and risk management measures.

Water resource and climate enthusiasts will appreciate the intricate details of Eldorado Reservoir Dam, from its historical significance to its impact on the local environment. As a key infrastructure for water supply in the region, this dam serves as a vital resource for the community while also posing challenges in terms of potential hazards and risk management. With its unique design and regulatory oversight, Eldorado Reservoir Dam continues to play a crucial role in water management and conservation efforts in Saline County, Illinois.

StateNone
River / streamTrib Wolf Creek
NID IDIL00068
Owner typePublic Utility
Primary purposeWater Supply
Dam typeEarth
Year built1920
Dam height20 ft
Dam length1,200 ft
Max storage1,712 AF
Normal storage913 AF
Surface area145.0 ac
Drainage area2.1 sq mi
Hazard potentialSignificant
ConditionNot Available
Last inspectionWed, 12 Jun 2019 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Eldorado Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.

Around the water

Make a day of it

Boat launches, lakeside camping, fishing access, and other reservoirs near Eldorado Reservoir Dam.

Track Eldorado Reservoir 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.

FAQ

About Eldorado Reservoir Dam

Where does the data for Eldorado Reservoir 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.

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Other water bodies near here

Snoflo-tracked reservoirs and dams within driving distance of Eldorado Reservoir Dam.