Johnson Sauk Trail Lake Dam dam
Johnson Sauk Trail Lake Dam
Johnson Sauk Trail Lake Dam, located in Mineral, Illinois, is a state-regulated earth dam built in 1956 for recreational purposes. The dam stands at 38 feet high and spans a length of 563 feet, with a storage capacity of 752 acre-feet and a spillway width of 66 feet. Situated on the TRIB King Creek, the dam's primary designer is Robert Anderson Engineers, ensuring its structural integrity and safety for visitors.
Managed by the Illinois Department of Natural Resources (IDNR), Johnson Sauk Trail Lake Dam has a low hazard potential and a moderate risk assessment rating. While the condition assessment is currently not available, the dam undergoes regular inspections every five years to ensure its continued safety and functionality. With its uncontrolled spillway and outlet gates, the dam provides essential flood control and recreational opportunities for the surrounding community, making it a vital water resource in the region.
Enthusiasts of water resources and climate will appreciate the ecological significance of Johnson Sauk Trail Lake Dam, which not only offers a picturesque recreational area but also serves as a crucial infrastructure for water management in Henry County, Illinois. With its historical significance and continued maintenance by state regulators, the dam stands as a testament to sustainable water resource management and environmental stewardship in the region.
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 Sauk Trail Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Green River Near Geneseo | 552 cfs | → |
| Big Bureau Creek At Princeton | 43 cfs | → |
| Indian Creek Near Wyoming | 19 cfs | → |
| Rock River Near Joslin | 9,490 cfs | → |
| Edwards River Near Orion | 66 cfs | → |
| East Bureau Creek Near Bureau | 2 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Johnson Sauk Trail Lake Dam.
Track Johnson Sauk Trail 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 Sauk Trail Lake Dam
Where does the data for Johnson Sauk Trail 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 Sauk Trail Lake Dam.