Henry Neuman Detention dam
Henry Neuman Detention
Henry Neuman Detention, also known as Isaac Walton League, is a private earth dam located in Elba, Minnesota. Built in 1982 by the USDA NRCS, this flood risk reduction structure stands at 26 feet tall and stretches 332 feet in length. With a storage capacity of 52 acre-feet and a drainage area of 0.47 square miles, the dam plays a crucial role in mitigating flood risks along the Whitewater River S Branch.
Managed by the Natural Resources Conservation Service, Henry Neuman Detention has a low hazard potential and is deemed to be in satisfactory condition as of the last inspection in June 2017. Despite its uncontrolled spillway and outlet gates, the dam has a moderate risk rating of 3, highlighting the importance of ongoing risk management measures. Its role in safeguarding the surrounding area from flooding underscores the vital link between water resource management and climate resilience in the region.
For water resource and climate enthusiasts, Henry Neuman Detention serves as a testament to the collaborative efforts between private entities and state regulatory agencies in safeguarding communities from the impacts of extreme weather events. Its strategic location within the St. Paul District and the oversight provided by the MNDNR EWR ensure that this earth dam continues to fulfill its primary purpose of flood risk reduction. As discussions around climate change intensify, structures like Henry Neuman Detention play a crucial role in building resilience and adaptive capacity in the face of evolving environmental challenges.
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 Henry Neuman Detention -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mississippi River At Winona | 27,300 cfs | → |
| Root River Near Pilot Mound | 566 cfs | → |
| Zumbro River At Kellogg | 1,550 cfs | → |
| Trempealeau River At Dodge | 761 cfs | → |
| Trempealeau River At Arcadia | 700 cfs | → |
| Root River Near Houston | 855 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Henry Neuman Detention.
Boat launches
- Mississippi River -- Merrick Park South
- Bartlet Lake Road Winona
- Mississippi River -- Lower Spring Lake Landing
- Mississippi River -- Fountain City Boat Dock
- Mississippi River -- Lower Fountain City Landing
- Mississippi River -- Upper Spring Lake Landing
Campgrounds
- John Latsch State Park
- Merrick State Park Campground
- Merrick State Park
- Prairie Island Campground
- Prairie Island City Campground
- Carley State Park
Fishing spots
- Dacota Street Fishing Pier
- Huff Street Fishing Pier
- Franklin St. Fishing Pier
- Bigalks Creek
- Coldwater Creek
- Pine Creek
Track Henry Neuman Detention 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 Henry Neuman Detention
Where does the data for Henry Neuman Detention 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 Henry Neuman Detention.