Thompson Dam dam
Thompson Dam
Thompson Dam, also known as Hubbard Lake Walleye Pond, is a privately owned structure located in Spruce, Michigan. Completed in 1979, this earth dam stands at a height of 12 feet and stretches 400 feet in length, with a maximum storage capacity of 70 acre-feet. Situated on a tributary to Devils River, the dam serves various purposes beyond flood control, although it is classified as having a low hazard potential.
Managed by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE), Thompson Dam is subject to state regulatory oversight, including permitting, inspection, and enforcement. While the dam's condition is currently not rated, it undergoes inspections every five years to ensure its structural integrity and safety. With a moderate risk assessment rating, Thompson Dam is equipped with an uncontrolled spillway and has a maximum discharge capacity of 270 cubic feet per second.
For water resource and climate enthusiasts, Thompson Dam presents an intriguing case study in dam management and risk assessment. Its location within the Buffalo District of the US Army Corps of Engineers and its association with the Devils River watershed highlight the interconnected nature of water infrastructure and environmental conservation. As efforts to mitigate climate change and safeguard water resources intensify, the maintenance and monitoring of structures like Thompson Dam play a vital role in ensuring the resilience of our hydrological systems.
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 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Thunder Bay River At Herron Road Near Bolton | 764 cfs | → |
| Au Sable River Near Mc Kinley | 1,680 cfs | → |
| Au Sable River Near Curtisville | 1,550 cfs | → |
| Au Sable River Near Au Sable | 1,800 cfs | → |
| Au Sable River At Mio | 1,320 cfs | → |
| Au Sable River Near Red Oak | 1,410 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Thompson Dam.
Boat launches
- Lost Lake Trail Lost Lake Woods
- Potawatomi Loop Alcona Township
- Sherman Street Lincoln
- Mccollum Lake Road Clinton Township
- North Skeel Road Millen Township
- Hinks Park Road Alpena Township
Campgrounds
- Ossineke State Forest Campground
- Jewell Lake Campground
- Pine River Campground
- Mccollum Lake State Forest Campground
- Horseshoe Lake Campground And Boat Launch
- Horseshoe Lake Campground
Fishing spots
Track Thompson 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 Dam
Where does the data for Thompson 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 Dam.