Corunna Dam dam
Corunna Dam
Corunna Dam, located in Corunna, Michigan, along the Shiawassee River, was completed in 1843 and serves as a vital recreational spot in the area. The dam, primarily constructed for recreational purposes, stands at a height of 10 feet with a hydraulic height of 15 feet. It has a storage capacity of 80 acre-feet, with a normal storage level of 60 acre-feet and a surface area of 17 acres. The dam also boasts a spillway width of 200 feet to manage potential overflow.
Despite its historical significance and recreational value, Corunna Dam poses a significant hazard potential with an unsatisfactory condition assessment as of 2009. The dam is regulated by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE), with state inspections and enforcement in place. The risk assessment for the dam is considered moderate, highlighting the importance of ongoing risk management measures to ensure the safety and integrity of the structure. While the dam has not been modified in recent years, regular inspections and emergency action plans are crucial for its maintenance and preparedness.
Corunna Dam, nestled in the picturesque surroundings of Shiawassee County, remains a popular destination for water resource and climate enthusiasts. As one of the oldest dams in Michigan, it serves as a reminder of the state's rich history and natural beauty. However, with its significant hazard potential and unsatisfactory condition assessment, continued vigilance and proactive risk management are essential to preserve the dam's safety and protect the surrounding environment for future generations to enjoy.
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 Corunna Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Shiawassee River At Owosso | 316 cfs | → |
| Flint River Near Flint | 416 cfs | → |
| Red Cedar River Near Williamston | 86 cfs | → |
| Flint River Near Fosters | 330 cfs | → |
| Sloan Creek Near Williamston | 2 cfs | → |
| Red Cedar River At East Lansing | 181 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Corunna Dam.
Boat launches
- Peninsula Way Victor Township
- Buckingham Circle 9475, Victor Township
- Babcock Road Victor Township
- Lobdel Lake Dnr Boatlaunch
- Indian Lake, 75 Acres, Livingston County
- Lake Ponemah, Genesee County
Campgrounds
- Sleepy Hollow State Park
- Seven Lakes State Park
- Group Camping Area 2
- Group Camping Area 3
- Group Camping Area 1
- Group Camping Area 4
Fishing spots
Track Corunna 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 Corunna Dam
Where does the data for Corunna 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 Significant 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 Corunna Dam.