Erredge Group Detention dam
Erredge Group Detention
Erredge Group Detention, located in Zumbrota, Minnesota, is a private earth dam designed by the USDA NRCS in 1965 for the primary purpose of flood risk reduction along Bitter Creek. The dam stands at a height of 25 feet with a structural height of 28 feet and a length of 475 feet, providing a storage capacity of 97 acre-feet and a drainage area of 0.6 square miles. Despite being classified as having a significant hazard potential, the dam is currently in fair condition as of the last assessment in 2013.
Managed by the Minnesota Department of Natural Resources, Erredge Group Detention is regulated and inspected by the state, with enforcement and permitting responsibilities falling under the MNDNR EWR. The dam has an uncontrolled spillway and outlet gates, with a maximum discharge capacity of 340 cubic feet per second. While the dam has not undergone any modifications in recent years and lacks an Emergency Action Plan, it meets the guidelines for risk assessment and management, with a moderate risk rating of 3. As a vital infrastructure for flood risk reduction in the region, the dam serves as a crucial component in protecting the surrounding area from potential inundation events.
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 Erredge Group Detention -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| South Fork Zumbro River At Rochester | 159 cfs | → |
| Cannon River At Welch | 713 cfs | → |
| Mississippi River At Red Wing | 19,400 cfs | → |
| Straight River Near Faribault | 286 cfs | → |
| Vermillion River Near Empire | 42 cfs | → |
| Mississippi River At Prescott | 22,200 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Erredge Group Detention.
Boat launches
- Scout Ridge Road Goodhue County
- Mill Towns State Trail Dakota County
- Gerlach Way Dakota County
- Mississippi River -- Hager City
- Route 61/Route 63 Lake City
- Mississippi River -- Bay City
Campgrounds
- Covered Bridge Park Campground
- Oronococ City Park
- Oxbow Park Campground
- Hay Creek Valley Campground
- Lake Byllesby Regional Park
- Nerstrand Big Woods State Park
Fishing spots
Track Erredge Group 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 Erredge Group Detention
Where does the data for Erredge Group 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 Significant 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 Erredge Group Detention.