Radigan dam
Radigan
Radigan is a gravity dam located on the Upper Tamarack River in Douglas, Wisconsin. Completed in 1938, the dam serves primarily for recreational purposes, providing a storage capacity of 420 acre-feet and a surface area of 150 acres. With a structural height of 12 feet and a hydraulic height of 7 feet, Radigan also has a spillway width that allows for controlled discharge of up to 3595 cubic feet per second.
Despite its historical significance, Radigan has been classified as having a high hazard potential due to its poor condition assessment. The dam underwent modifications in 1964 and is currently regulated, permitted, inspected, and enforced by the Wisconsin Department of Natural Resources. With a risk assessment rating of "Very High (1)", there is a pressing need for risk management measures to be implemented to ensure the safety and integrity of the structure for both water resource management and climate-related concerns.
Overall, Radigan presents both a valuable recreational resource and a significant engineering challenge in terms of maintenance and risk management. As water resource and climate enthusiasts, it is essential to recognize the importance of proactive measures in safeguarding dams like Radigan to mitigate potential hazards and ensure the sustainability of water infrastructure in the face of changing environmental 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 Radigan -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| St. Croix River Near Danbury | 1,320 cfs | → |
| Nemadji River Near South Superior | 508 cfs | → |
| Kettle River Below Sandstone | 476 cfs | → |
| St. Louis River At Scanlon | 2,770 cfs | → |
| Bois Brule River At Brule | 167 cfs | → |
| Snake River Near Pine City | 447 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Radigan.
Boat launches
- Radigan Flowage -- Access
- Mcgraw Lake -- Access
- St. Croix River - Dry Landing Boat Landing
- Little Mcgraw Lake -- Ramp
- No Mans Lake -- Access
- Sand Lake -- Access - S End Lake - Sunset Dr
Campgrounds
- Schoen Park
- St Croix Nsr - Schoen Park
- Louise Park
- Big Island
- Saint Croix Nsr - Riverside Landing
- Riverside Landing - St. Croix National Scenic River
Track Radigan 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 Radigan
Where does the data for Radigan 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 Radigan.