Manson dam
Manson
Manson is a privately owned earth dam located in Juneau, Wisconsin, with a primary purpose classified as 'Other'. Built by the USDA NRCS in 1973, Manson stands at a height of 25 feet and stretches 210 feet in length, with a storage capacity of 18 acre-feet. The dam's spillway is uncontrolled, with a width of 12 feet, and its hazard potential is considered low, with a moderate risk level assessed.
Situated on Tr-Cleaner Creek within the St. Paul District, Manson is funded, designed, and constructed by the Natural Resources Conservation Service. Despite being a low-hazard structure, Manson has not undergone recent condition assessments, inspections, or emergency action plans. With a drainage area of 0.09 square miles and a maximum discharge of 21 cfs, Manson serves as a crucial water resource in the region, contributing to water management efforts and climate resilience initiatives in Wisconsin.
For water resource and climate enthusiasts, Manson's unique features and historical significance make it an intriguing site to study and monitor. As a privately owned dam with limited federal oversight, Manson presents a case study on the role of private entities in water infrastructure maintenance and emergency preparedness. With its low hazard potential and moderate risk level, Manson underscores the importance of regular inspections and risk management measures to ensure the safety and resilience of water structures in the face of changing climate conditions.
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 Manson -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Lemonweir River At New Lisbon | 326 cfs | → |
| Kickapoo River At State Highway 33 At Ontario | 149 cfs | → |
| Yellow River At Necedah | 253 cfs | → |
| Kickapoo River At La Farge | 250 cfs | → |
| Wisconsin River Near Wisconsin Dells | 9,040 cfs | → |
| La Crosse River At Sparta | 209 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Manson.
Boat launches
- Beach Street 199, Mauston
- Field Veterans Memorial Lake Boat Ramp
- Dutch Hollow Lake -- Access Nr Auble Landing Rd
- Dutch Hollow Lake -- Access Off Dutch Hollow Road
- Lake Redstone -- Access At End Of Section 11 Rd
- Hemlock Slough -- Access
Campgrounds
- Elroy Campground
- Schultz City Park
- Wonewoc Legion Park
- Baker's Field
- Legion Park Camp Sites
- Riverside Park - New Lisbon
Paddle runs
- Lone Rock To The Confluence Of The Green And Wisconsin Rivers
- Honey Creek (County Road Y On The Southern Bank) To The State Route 130 Highway Bridge Crossing At Lone Rock
More reservoirs
Track Manson 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 Manson
Where does the data for Manson 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 Manson.