Lake Lynnhurst Dam dam
Lake Lynnhurst Dam
Lake Lynnhurst Dam, located in Peoria, Illinois, is a private earth dam built in 1940 with a primary purpose of recreation. Standing at a height of 44 feet and spanning 530 feet in length, this dam holds a maximum storage capacity of 159 acre-feet and covers a surface area of 7 acres. The dam overlooks the Tributary Kickapoo Creek and is regulated by the Illinois Department of Natural Resources, ensuring state inspection, permitting, and enforcement are carried out regularly to maintain its safety.
Despite being classified as low hazard potential, Lake Lynnhurst Dam poses a moderate risk according to a risk assessment score of 3. The dam features an uncontrolled spillway with a width of 84 feet and an uncontrolled outlet gate system. The last inspection in April 2018 revealed a condition assessment of "Not Available," indicating a need for further evaluation and potential maintenance measures. With a drainage area of 0.2 square miles and a maximum discharge capacity of 660 cubic feet per second, this dam plays a crucial role in managing water resources in the area.
For water resource and climate enthusiasts, Lake Lynnhurst Dam serves as a focal point for recreational activities while also contributing to the local ecosystem's water management. With its historical significance and ongoing regulatory oversight by the state, this earth dam stands as a testament to human ingenuity in balancing the needs of water storage and environmental conservation. As efforts continue to ensure its safety and functionality, Lake Lynnhurst Dam remains a vital component of the region's water infrastructure.
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 Lake Lynnhurst Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Fondulac Creek Near East Peoria | 0 cfs | → |
| Farm Creek At Farmdale | 11 cfs | → |
| Illinois River At Kingston Mines | 11,700 cfs | → |
| Indian Creek Near Wyoming | 22 cfs | → |
| Mackinaw River Near Green Valley | 431 cfs | → |
| Mackinaw River Near Congerville | 286 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Lynnhurst Dam.
Boat launches
- Mendenhall Park
- West Pine Street 1, Chillicothe
- Lakeview Drive 1717, Eureka
- Sebree Road Fulton County
- Spring Lake Road Tazewell County
- Lakeland Park Road 26005, Canton
Track Lake Lynnhurst 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 Lake Lynnhurst Dam
Where does the data for Lake Lynnhurst 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 Lake Lynnhurst Dam.