Lake Long Bow Dam dam
Lake Long Bow Dam
Lake Long Bow Dam in Peoria, Illinois, is a privately owned earth dam completed in 1964 with a primary purpose of recreation. It spans 300 feet in length and stands at a height of 12 feet, providing a storage capacity of 60 acre-feet. Situated on the E BR Lamarsh Creek, the dam is regulated by the Illinois Department of Natural Resources and undergoes regular inspections to ensure its safety and compliance with state regulations.
With a high hazard potential and moderate risk assessment, Lake Long Bow Dam is a critical structure for water resource management in the region. While information on its current condition assessment is not available, the dam's emergency action plan was last revised in 2014, indicating a commitment to preparedness and risk management. Despite its age, the dam continues to serve as a popular recreational spot, offering opportunities for fishing, boating, and other water-based activities in the area.
Managed by private owners, Lake Long Bow Dam plays a vital role in providing recreational opportunities while also serving as a crucial water storage facility. As climate change impacts water resources, the dam's role in managing water levels and mitigating flood risks becomes increasingly important. With its regulated status and regular inspections, Lake Long Bow Dam exemplifies the importance of proactive risk management and the need for sustainable water resource practices in the face of a changing climate.
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 Long Bow Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Fondulac Creek Near East Peoria | 0 cfs | → |
| Illinois River At Kingston Mines | 11,700 cfs | → |
| Farm Creek At Farmdale | 11 cfs | → |
| Mackinaw River Near Green Valley | 431 cfs | → |
| Indian Creek Near Wyoming | 22 cfs | → |
| Mackinaw River Near Congerville | 286 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Long Bow Dam.
Boat launches
- Mendenhall Park
- Sebree Road Fulton County
- Spring Lake Road Tazewell County
- Lakeland Park Road 26005, Canton
- West Pine Street 1, Chillicothe
- Lakeview Drive 1717, Eureka
Track Lake Long Bow 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 Long Bow Dam
Where does the data for Lake Long Bow 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 Lake Long Bow Dam.