Johnson Lake Dam dam
Johnson Lake Dam
Johnson Lake Dam, located in Enterprise, Illinois, stands as a critical infrastructure designed by RHUTASEL & ASSOC. in 2002 for the primary purpose of debris control. This private-owned dam, regulated by the Illinois Department of Natural Resources, spans 400 feet in length and reaches a height of 20 feet, with a storage capacity of 110 acre-feet. Situated on the TRIB ENDSLEY CREEK, the dam plays a significant role in managing water resources and mitigating flood risks in the Wayne County area.
With a low hazard potential and a moderate risk assessment rating, Johnson Lake Dam has a spillway width of 16 feet and a maximum discharge capacity of 213 cubic feet per second. The dam's structure, primarily made of earth and stone, covers a surface area of 7 acres and serves as a recreational spot for enthusiasts. Despite its age, the dam undergoes regular inspections every five years to ensure its structural integrity and safety, showcasing a commitment to water resource management and climate resilience in the region.
Overall, Johnson Lake Dam stands as a vital component of the water infrastructure in Wayne County, Illinois, serving not only for debris control but also providing recreational opportunities for the local community. With its state-regulated status and adherence to inspection protocols, the dam exemplifies a commitment to water resource management and environmental stewardship. As climate change impacts continue to affect water resources, the importance of structures like Johnson Lake Dam in maintaining water security and flood control cannot be overstated.
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 Johnson Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Wabash River Below Clay City | 172 cfs | → |
| Skillet Fork At Wayne City | 27 cfs | → |
| Bonpas Creek At Browns | 5 cfs | → |
| Casey Fork At Mount Vernon | 6 cfs | → |
| Embarras River At Ste. Marie | 665 cfs | → |
| Wabash River At Mt. Carmel | 30,400 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Johnson Lake Dam.
Campgrounds
Track Johnson 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 Johnson Lake Dam
Where does the data for Johnson 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 Johnson Lake Dam.