Thompson Pond Dam dam
Thompson Pond Dam
Thompson Pond Dam in Henry County, Illinois, is a privately owned structure that serves as a recreational spot for water resource and climate enthusiasts. Completed in 1972, this Earth-type dam stands at a height of 21 feet and has a length of 300 feet, providing a storage capacity of 76 acre-feet. Situated on the TRIB EDWARDS RIVER in the ANDOVER-OFFSTEAM area, the dam's primary purpose is for recreation, offering opportunities for activities such as fishing, boating, and wildlife observation.
Managed by the Illinois Department of Natural Resources (IDNR), Thompson Pond Dam is regulated, inspected, and enforced by the state, ensuring its safety and compliance with regulations. The dam's hazard potential is classified as low, with a moderate risk assessment score of 3. While the condition assessment is not available, the structure has an uncontrolled spillway type and outlet gates. Despite its age, the dam remains a popular destination for outdoor enthusiasts seeking to enjoy the natural beauty of the surrounding area.
Thompson Pond Dam's location within the Rock Island District adds to its appeal, attracting visitors who appreciate the tranquility and recreational opportunities it offers. With a history dating back to the early 1970s, this beloved landmark continues to provide a safe and enjoyable environment for water resource and climate enthusiasts to explore and appreciate the beauty of Illinois' natural landscapes.
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 Thompson Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Edwards River Near Orion | 66 cfs | → |
| Green River Near Geneseo | 588 cfs | → |
| Indian Creek Near Wyoming | 22 cfs | → |
| Rock River Near Joslin | 10,200 cfs | → |
| Mill Creek At Milan | 34 cfs | → |
| Crow Creek At Bettendorf | 5 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Thompson Pond Dam.
Boat launches
- Gatewood Lane Galesburg
- Colona
- North Broadway Street 201, Cleveland
- 48th Street 5598, Moline
- Big Island Parkway Rock Island
- 1st Avenue Hampton
Track Thompson Pond 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 Thompson Pond Dam
Where does the data for Thompson Pond 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 Thompson Pond Dam.