Mt Tunnels Tailings Dam dam
Mt Tunnels Tailings Dam
Mt Tunnels Tailings Dam in Jefferson, Montana, is a privately-owned structure regulated by the state's Department of Environmental Quality. The dam, with a surface area of 256 square meters, was completed for the primary purpose of tailings storage. Despite lacking specific data on its height, volume, and other technical details, the dam has been assessed as being in satisfactory condition as of June 2018.
Located at coordinates 46.362143 latitude and -112.112989 longitude, Mt Tunnels Tailings Dam is under the jurisdiction of the state and is subject to regular inspections and enforcement measures by the DEQ. With a high hazard potential, it is crucial for water resource and climate enthusiasts to monitor the dam's condition closely. While specific information on the dam's design and construction is unavailable, it is known that it falls under the oversight of the Mine Safety and Health Administration for regulatory and inspection purposes.
The dam's emergency preparedness, including the existence of an Emergency Action Plan and the availability of inundation maps, remains unclear. However, the satisfactory condition assessment and state regulation provide some assurance of its stability. As a point of interest for those interested in water resources and climate, Mt Tunnels Tailings Dam serves as a reminder of the importance of proper monitoring and maintenance of critical infrastructure to prevent any potential environmental disasters.
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 Mt Tunnels Tailings Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Boulder River Near Boulder Mt | 230 cfs | → |
| Tenmile Creek Near Rimini Mt | 20 cfs | → |
| Prickly Pear Creek Near Clancy Mt | 35 cfs | → |
| Tenmile Creek Near Helena Mt | 29 cfs | → |
| Missouri River Bl Hauser Lake Nr Helena Mt | 3,330 cfs | → |
| Clark Fork At Deer Lodge Mt | 169 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mt Tunnels Tailings Dam.
Boat launches
- Helena Regulating Reservoir Road Lewis And Clark County
- Smith Road Helena Valley Northeast
- Cross Drive Helena Valley Northeast
- York Road Lewis And Clark County
- Canyon Ferry Road 7604, Lewis And Clark County
- Canyon Ferry Road Lewis And Clark County
Campgrounds
Fishing spots
Track Mt Tunnels Tailings Dam 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 Mt Tunnels Tailings Dam
Where does the data for Mt Tunnels Tailings Dam 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 Mt Tunnels Tailings Dam.