Hermansville Dam dam
Hermansville Dam
Hermansville Dam, located in Hermansville, Michigan, is a significant earth dam constructed in 1888 for the primary purpose of recreation. Situated on the Little Cedar River, the dam stands at a height of 12 feet with a hydraulic height of 11.5 feet and a length of 235 feet. With a normal storage capacity of 475 acre-feet and a maximum storage capacity of 630 acre-feet, the dam covers a surface area of 132 acres and has a drainage area of 15 square miles.
Managed by the local government, Hermansville Dam is under the regulatory oversight of the Michigan Department of Environment, Great Lakes, and Energy (DEGLE). The dam has been classified as having a significant hazard potential but is currently in satisfactory condition based on the last inspection conducted in September 2018. Despite its age, Hermansville Dam continues to provide recreational opportunities and serves as a vital component of the local water resource infrastructure.
As water resource and climate enthusiasts, it is important to monitor the maintenance and condition of dams like Hermansville Dam to ensure their continued safety and functionality. With its historical significance and recreational value, Hermansville Dam remains a focal point for both the community and visitors alike, highlighting the intersection of water management, infrastructure, and environmental stewardship in the region.
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 Hermansville Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Menominee River Near Vulcan | 2,260 cfs | → |
| Menominee River Below Pemene Creek Near Pembine | 2,220 cfs | → |
| Menominee River At White Rapids Dam Near Banat | 2,550 cfs | → |
| Menominee River At Niagara | 1,180 cfs | → |
| Ford River Near Hyde | 171 cfs | → |
| Menominee River At Koss | 2,720 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hermansville Dam.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Hermansville Dam
Where does the data for Hermansville 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 below 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.
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.