Twin Falls dam
Twin Falls
Twin Falls, also known as Michigamme, is a privately owned hydroelectric dam located in Aurora, Wisconsin. Built in 1912 on the Menominee River, this gravity dam stands at 56 feet tall with a hydraulic height of 44 feet and a structural height of 56 feet. The dam has a storage capacity of 10,000 acre-feet and covers a surface area of 1120 acres, serving both hydroelectric and recreational purposes.
With a maximum discharge of 40,480 cubic feet per second, Twin Falls has a controlled spillway and is classified as having a high hazard potential. Despite its age, the dam's condition assessment is not rated, indicating the need for further inspection and evaluation. The risk assessment for Twin Falls is very high, warranting risk management measures to ensure the safety and stability of the structure.
As a significant part of the hydroelectric infrastructure in the region, Twin Falls plays a crucial role in both water resource management and climate adaptation efforts. Its location on the Menominee River, along with its historic significance and high hazard potential, make Twin Falls a site of interest for water resource and climate enthusiasts looking to understand the intersection of human infrastructure and natural ecosystems.
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 Twin Falls -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Menominee River At Twin Falls Near Iron Mt | 3,420 cfs | → |
| Menominee River Near Florence | 1,550 cfs | → |
| Pine River Below Pine R Powerplant Nr Florence | 477 cfs | → |
| Menominee River At Niagara | 2,250 cfs | → |
| Brule River Near Commonwealth | 818 cfs | → |
| Paint River Nr Alpha | 404 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Twin Falls.
⚓ Boat launches
- Twin Falls Flowage -- Access
- Menominee River Access Off Of Romitti Drive
- Lake Antoine Bike Path Iron Mountain
- Lake Antoine Bike Path Dickinson County
- Ellwood Lake -- Access
- North Lake -- Access
⛺ Campgrounds
- River Bends Campground
- Summer Breeze Campground
- Glidden Lake State Forest Campground
- New Prospect - Kettle Moraine State Forest
- Gene's Pond State Forest Campground
- Paint River Hills Campground
🎣 Fishing spots
More fishing →🛶 Paddle runs
- Brule Lake In Ne1/4 Sec 15, T41n, R13e To Forest Boundary In Se1/4 Sec 31, T41n, R17e
- Mainstem, Easternforest Boundary In Sec 1, T44n, R35w To City Of Crystal Falls
- Forest Road 2156 To Eastern Forest Boundary
- Forest Road 2398 To Eastern Forest Boundary
- Forest Road 2133 To Forest Road 2156
- South Branch--Origin In Sec 25, T38n, R14e To Confluence With Main Branch
Track Twin Falls 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 Twin Falls
Where does the data for Twin Falls 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 High 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 Twin Falls.