Escanaba No 1 Dam dam
Escanaba No 1 Dam
Located in Wells, Michigan, the Escanaba No 1 Dam, also known as Flat Rock #1 Dam, stands proudly along the Escanaba River. Built in 1907, this private-owned gravity dam serves a primary purpose of hydroelectric power generation. Standing at a height of 31 feet and stretching 800 feet in length, the dam has a storage capacity of 2000 acre-feet, with a normal storage level of 750 acre-feet.
With a controlled spillway width of 438 feet, the Escanaba No 1 Dam has a maximum discharge capacity of 14,600 cubic feet per second. Despite being classified as a low hazard potential structure with a very high risk assessment, the dam's condition assessment is currently not rated. The last inspection of the dam was conducted in May 2008, with an inspection frequency of 5 years. Although the dam is not regulated by the state, it plays a vital role in the region's water resource management and climate adaptation efforts.
For water resource and climate enthusiasts, the Escanaba No 1 Dam represents a historic engineering marvel that harnesses the power of the Escanaba River for hydroelectricity generation. As a key infrastructure along the river, the dam provides valuable insights into the intersection of water management, energy production, and environmental conservation. Its strategic location and design highlights the importance of sustainable development and resilience in the face of changing climatic conditions.
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 Escanaba No 1 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Ford River Near Hyde | 171 cfs | → |
| Escanaba River At Cornell | 540 cfs | → |
| Sturgeon River Near Nahma Junction | 115 cfs | → |
| Menominee River Below Pemene Creek Near Pembine | 2,220 cfs | → |
| Menominee River Near Vulcan | 2,260 cfs | → |
| Au Train River At Forest Lake | 137 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Escanaba No 1 Dam.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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More reservoirs
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About Escanaba No 1 Dam
Where does the data for Escanaba No 1 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.