North Manistique Lake Dam dam
North Manistique Lake Dam
North Manistique Lake Dam, also known as Round Lake, is a private dam located in Helmer, Michigan, within Luce County. Built in 1965, this dam stands at a height of 7 feet and has a hydraulic height and structural height of the same measurement. With a length of 16 feet, it serves as a crucial structure for regulating water flow in the area, particularly along the Helmer Creek.
This dam has a primary purpose categorized as 'Other', with a storage capacity of 5475 acre-feet and a normal storage level of 3250 acre-feet. Despite its low hazard potential and satisfactory condition assessment, the risk assessment for this dam is considered high (2). Regular inspections are conducted every 5 years to ensure its integrity and functionality, with the last assessment date recorded in September 2019. The dam does not have a spillway but features a spillway width of 18 feet.
Overall, North Manistique Lake Dam plays a vital role in water resource management in the region, contributing to flood control and water storage. As an enthusiast of water resources and climate, understanding the function and condition of this dam can provide valuable insights into the conservation and sustainability efforts in the area, as well as the potential risks associated with its operation.
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 North Manistique Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Black River Near Garnet | 12 cfs | → |
| Manistique River Near Manistique | 1,280 cfs | → |
| Tahquamenon River Near Paradise | 536 cfs | → |
| Sturgeon River Near Nahma Junction | 124 cfs | → |
| Au Train River At Forest Lake | 137 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near North Manistique Lake 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 North Manistique Lake Dam
Where does the data for North Manistique 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 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.