Maple Lake dam
Maple Lake
Maple Lake in Oneida, Wisconsin, is a gravity dam completed in 1941 primarily for recreational purposes, offering a surface area of 144 acres and a maximum storage capacity of 1330 acre-feet. The dam stands at a height of 12 feet, with a hydraulic height of 7 feet, and a length of 85 feet. The lake's drainage area is one square mile, with a controlled spillway type and a maximum discharge capacity of 170 cubic feet per second.
Despite its fair condition assessment and high hazard potential, Maple Lake is regulated by the Wisconsin Department of Natural Resources, with state permitting, inspection, and enforcement in place. The dam's emergency action plan status is unclear, but its risk assessment indicates a very high risk level. Located in the Detroit District, Maple Lake's risk management measures and inundation maps are currently unavailable, warranting careful monitoring and maintenance to ensure the safety and sustainability of this water resource for future generations.
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 Maple Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Muskellunge Ck-Muskellunge L Otl-Nr Eagle River | 2 cfs | → |
| Muskellunge Creek Near St. Germain | 9 cfs | → |
| Wisconsin River @ Rainbow Lake Nr Lake Tomahawk | 667 cfs | → |
| Allequash Creek Site 3 Near Boulder Junction | 4 cfs | → |
| Allequash Creek At Cth M Nr Boulder Junction | 11 cfs | → |
| Stevenson Creek At Cth M Nr Boulder Junction | 2 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Maple Lake.
Boat launches
- Townline Lake -- Access Nr Maple Lake Dam Rd
- Range Line Lake -- Access At S End Lake Nr Hwy 45
- Medicine Lake -- Access At W Side Of Lake Nr Hwy X
- Big Fork Lake -- Access At Ne Side Lake Fourmile Creek Rd
- Stella Lake Road Town Of Stella
- Margaret Lake -- Access
Campgrounds
- Laurel Lake
- Laurel Lake Recreation Area
- Seven Mile Lake Campground
- Anvil Lake Recreation Area
- Luna - White Deer Lake Recreation Area
- Luna White Deer Campground
Fishing spots
Paddle runs
- Main Branch--Headwaters To Forest Road 2174
- North Branch (Sections 19/30 Line) To Unnamed Creek In Sec 4, T37n, R13e
- North Branch--Origin In Sec 10, T38n, R13e To 1/4 Mile West Of Highway 55
- North Branch--Butternut Lake To Confluence With Main Branch
- Forest Road 2174 To Private Bridge
- 1/4 Mile West Of Highway 55 To Confluence With Main Branch
Track Maple Lake 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 Maple Lake
Where does the data for Maple Lake 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 Maple Lake.