Brevoort Lake Dam dam
Brevoort Lake Dam
Brevoort Lake Dam, located in Mackinac, Michigan, is a Federal-owned structure managed by the Hiawatha National Forest. Completed in 1938, this Earth-type dam stands at 10 feet high and spans 656 feet in length, creating a reservoir with a storage capacity of 35,000 acre-feet. The dam primarily serves recreational purposes, including fish and wildlife pond management, and offers a surface area of 4,314 acres for outdoor enthusiasts to enjoy.
With a controlled spillway width of 44 feet and a maximum discharge capacity of 617 cubic feet per second, Brevoort Lake Dam boasts a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite its relatively stable condition, the dam is classified as having a very high risk due to its location and potential impact in the event of a failure. As a key structure within the USDA Forest Service's portfolio, regular inspections and maintenance ensure the safety and functionality of Brevoort Lake Dam for both the surrounding ecosystem and recreational activities.
Furthermore, the dam is situated along the Brevoort River and plays a crucial role in water resource management for the area. With its strategic design and construction by the Forest Service, Brevoort Lake Dam stands as a testament to sustainable infrastructure development in harmony with nature. Climate and water resource enthusiasts can appreciate the intricate balance between human recreation and environmental stewardship that Brevoort Lake Dam represents in the beautiful landscape of Michigan's Mackinac County.
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 Brevoort Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Black River Near Garnet | 39 cfs | → |
| Tahquamenon River Near Paradise | 2,460 cfs | → |
| Sturgeon River At Wolverine | 409 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Brevoort Lake Dam.
Boat launches
- Park Lane Moran Township
- Dukes Road Moran
- Carp River Boat Landing Road Saint Ignace Township
- Stockbridge Street Saint Ignace
- Frenchmans Lake Boat Ramp
Campgrounds
- Lake Michigan
- Lake Michigan Campground
- Brevort Lake
- Brevoort Lake Campground
- Little Brevoort Lake (South) - State Forest
- Little Brevort Lake-South State Forest Campground
Fishing spots
Paddle runs
- Origin At Confluence Of Outlets Of Frenchman Lake And Carp Lake (Sec 26, T44n, R6w) To West Section Line Of Sec 30, T43n, R5w
- East Branch From Western Forest Boundary (Sec 19, T46n, R6w) To Confluence With Mainstem
- Source In Sec 21, T47n, R12w To Mouth At Whitefish Bay
Track Brevoort Lake 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 Brevoort Lake Dam
Where does the data for Brevoort Lake 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 Brevoort Lake Dam.