Manson Heights Dams dam
Manson Heights Dams
Manson Heights Dams, also known as Manson Heights Lake, are privately owned dams located in Maquon, Illinois. Constructed in 1950, these earth dams have a height of 25 feet and a storage capacity of 300 acre-feet, primarily serving for recreational purposes. Situated on the TRIB SUGAR CREEK, these dams are regulated, permitted, inspected, and enforced by the Illinois Department of Natural Resources (IDNR), ensuring their safety and compliance with state regulations.
With a surface area of 26 acres and a drainage area of 0.3 square miles, Manson Heights Dams have a low hazard potential and a moderate risk assessment. The spillway type is uncontrolled, and the outlet gates are also uncontrolled. The last inspection was conducted in September 2018, with a regular inspection frequency of every 5 years. While the condition assessment is currently unavailable, the dams meet state guidelines and are equipped with emergency action plans to mitigate any potential risks.
Despite the dams' private ownership, they play a crucial role in providing recreational opportunities for the local community and visitors. The dams offer a serene environment for activities such as fishing, boating, and picnicking, making Manson Heights Dams a valuable asset in the landscape of Knox County, Illinois, for water resource and climate enthusiasts to enjoy and appreciate.
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 Manson Heights Dams -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Indian Creek Near Wyoming | 13 cfs | → |
| Spoon River At London Mills | 441 cfs | → |
| Edwards River Near Orion | 66 cfs | → |
| Illinois River At Kingston Mines | 12,400 cfs | → |
| Spoon River At Seville | 594 cfs | → |
| Green River Near Geneseo | 493 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Manson Heights Dams.
Track Manson Heights Dams 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 Manson Heights Dams
Where does the data for Manson Heights Dams 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 Manson Heights Dams.