Croswell Dam dam
Croswell Dam
Located in Croswell, Michigan, the Croswell Dam stands as a vital structure for water supply purposes along the Black River. Constructed in 1902, this concrete dam boasts a height of 12 feet and a length of 200 feet, providing a storage capacity of 300 acre-feet. With a moderate risk assessment rating of 3, the dam is classified as having low hazard potential and is deemed to be in satisfactory condition as of its last assessment in July 2017.
Managed by a private owner, the Croswell Dam is regulated by the Michigan Department of Environment, Great Lakes, and Energy (EGLE), ensuring compliance with state permitting, inspection, and enforcement requirements. The dam's spillway, featuring an uncontrolled design with a width of 100 feet, is capable of discharging a maximum flow of 1,960 cubic feet per second. With a drainage area of 369 square miles and a surface area of 42 acres, the dam plays a crucial role in maintaining water levels for the surrounding area while minimizing potential risks to downstream communities.
As a key component of Michigan's water infrastructure, the Croswell Dam serves as a testament to the state's commitment to water resource management and climate resilience. With its historical significance and ongoing regulatory oversight, this dam continues to play a vital role in supporting water supply needs and mitigating potential hazards, ensuring the safety and sustainability of the surrounding environment for years to come.
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 Croswell Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Black River Near Jeddo | 115 cfs | → |
| Mill Creek Near Avoca | 42 cfs | → |
| Belle River At Memphis | 70 cfs | → |
| East Pond Creek At Romeo | 19 cfs | → |
| South Branch Flint River Near Columbiaville | 165 cfs | → |
| Farmers Creek Near Lapeer | 27 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Croswell Dam.
Boat launches
- Strawberry Lane 3627, Saint Clair County
- Bakersfield Park
- 40th Street 2401, Saint Clair County
- Marysville Boat Launch
- St Clair Parkway 1189, Mooretown
Campgrounds
- Silver Trails Scout Reservation
- Lakeport State Park
- Ruby Campground
- Sanilac County Park - Forester
- Camp Hawthorn Hollow
- Evergreen County Park
Fishing spots
Track Croswell 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 Croswell Dam
Where does the data for Croswell 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 Croswell Dam.