Sherman Mine Wastewater dam
Sherman Mine Wastewater
Sherman Mine Wastewater, located in St. Louis County, Minnesota, is a privately owned tailings dam constructed in 1953 with a primary purpose of storing tailings. The dam stands at a height of 20 feet and spans a length of 3200 feet, providing a storage capacity of 115 acre-feet. The dam is regulated by the Minnesota Department of Natural Resources and undergoes regular inspections to ensure compliance with state regulations.
Despite being classified as a low hazard potential structure, Sherman Mine Wastewater has not been rated for its condition assessment. The dam's last inspection was conducted in August 2019, with an inspection frequency of every 8 years. While the dam does not have an Emergency Action Plan (EAP) in place, it meets state permitting and inspection requirements. The dam's emergency contacts, risk assessment, and management measures are currently not documented.
Water resource and climate enthusiasts may be interested in monitoring the maintenance and regulatory oversight of Sherman Mine Wastewater to ensure the safe containment of tailings and the protection of nearby water resources. The dam's location near Dempsey Creek-TR and its low hazard potential highlight the importance of ongoing monitoring and adherence to state regulations to prevent any potential environmental impact from wastewater discharge.
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 Sherman Mine Wastewater -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Prairie River Near Taconite | 254 cfs | → |
| Mississippi River At Grand Rapids | 545 cfs | → |
| South Kawishiwi R Abv White Iron Lake Nr Ely | 2,250 cfs | → |
| Vermilion River Nr Crane Lake | 1,180 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Sherman Mine Wastewater.
⚓ Boat launches
- 6th Street Northeast , Chisholm
- Mesabi Trail , Buhl
- North 9th Avenue West Virginia
- South Sturgeon Lake
- Stingy Lake
⛺ Campgrounds
- Stubler Beach Campgrounds
- Buhl Rv Park
- Stubler Beach
- North Hibbing Campground
- West Two River
- Mccarthy Beach State Park
🎣 Fishing spots
More fishing →Track Sherman Mine Wastewater 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 Sherman Mine Wastewater
Where does the data for Sherman Mine Wastewater 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 Sherman Mine Wastewater.