Bohn dam
Bohn
Bohn is a privately owned dam located in Polk, Wisconsin, with a primary purpose of fire protection, stock, and small fish pond. Constructed in 1963 by the USDA NRCS, this earth dam stands at a height of 15 feet and has a storage capacity of 130 acre-feet. Situated at the outlet of Fountain Lake, Bohn serves multiple purposes including recreation and has a normal storage capacity of 40 acre-feet.
Managed by the Wisconsin Department of Natural Resources, Bohn has a low hazard potential and a very high risk assessment rating. While the dam has not been rated for its current condition, it undergoes inspections every 10 years to ensure safety and compliance with state regulations. The dam features a controlled spillway type with a hydraulic height of 8 feet and a maximum discharge of 120 cubic feet per second.
Bohn's location in a high-risk area underscores the importance of proper risk management measures and emergency action preparedness. With the potential to impact downstream communities, the dam's owners and regulators must prioritize safety and regular maintenance to mitigate any potential risks associated with its operation.
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 Bohn -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| St. Croix River At St. Croix Falls | 3,830 cfs | → |
| Snake River Near Pine City | 447 cfs | → |
| St. Croix River Near Danbury | 1,320 cfs | → |
| Kettle River Below Sandstone | 476 cfs | → |
| Willow River @ Willow R State Park Nr Burkhardt | 130 cfs | → |
| Rum River Near St. Francis | 428 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Bohn.
Boat launches
- Coon Lake -- Access
- Spirit Lake -- Access
- Round Lake -- Access At S End Of Lake At End Of Stillson Rd
- Dunham Lake -- Access
- Little Wood Lake -- Access
- Mud Hen Lake -- Lindberg Park Access
Campgrounds
- Straight Lake Campground
- Big Butternut Lake
- James N Mcnally City Campground
- James N. Mc Nally Campground
- Nevers Dam
- Saint Croix Family Campground
Paddle runs
Track Bohn 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 Bohn
Where does the data for Bohn 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 Bohn.