Magmont Tailings Dam dam
Magmont Tailings Dam
The Magmont Tailings Dam, located in Bixby, Missouri, was completed in 1979 and is primarily used for tailings disposal from the Magmont Mine. Owned by a private entity, the dam is regulated by the Dam and Reservoir Safety Program in Missouri. Standing at a height of 135 feet and with a length of 1190 feet, the dam has a storage capacity of 4600 acre-feet and serves a drainage area of 655 square miles, with a maximum discharge capacity of 6572 cubic feet per second.
Despite being rated as having a high hazard potential, the Magmont Tailings Dam is currently in satisfactory condition, as assessed in December 2007. The dam has a spillway width of 65 feet and is constructed using stone core types on a rock foundation. The dam's risk assessment is moderate (3), indicating that there are potential risks associated with its operation. With regular inspections and a satisfactory condition assessment, the dam is equipped to handle emergencies and ensure the safety of the surrounding area in the event of a breach.
Water resource and climate enthusiasts will find the Magmont Tailings Dam to be an intriguing structure with a significant impact on the local environment and water systems. As a crucial part of the Magmont Mine operations, the dam's design, operation, and maintenance play a vital role in ensuring the safety and sustainability of the surrounding area. With its high hazard potential and moderate risk assessment, the dam serves as a reminder of the importance of proper monitoring and maintenance of critical infrastructure in the face of changing climate conditions and water resource management 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 Magmont Tailings Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Fork Black River Nr Lesterville | 8 cfs | → |
| East Fork Black River At Lesterville | 44 cfs | → |
| Meramec River At Cook Station | 49 cfs | → |
| Big River At Irondale | 54 cfs | → |
| Black River Near Annapolis | 295 cfs | → |
| Logan Creek At Ellington | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Magmont Tailings Dam.
Boat launches
- Enough Boat Launch And Trailhead
- Council Bluff Lake Trail Washington County
- Bismarch Lake Road St. Francois County
- Ozark Trail - Marble Creek Section Iron County
- Crawford County
- State Highway B Shannon County
Campgrounds
- Ozark Trail Gunstock Hollow
- Panther Branch
- Council Bluff Recreation Area
- Council Bluff - Wild Boar Ridge
- Sutton Bluff
- Sutton Bluff Recreation Area
Fishing spots
Paddle runs
- State Highway 49 Bridge Near Dillard, Missouri To Forest Boundary In Sections 13/24, T38n, R3w
- Confluence With Alley Spring (Branch) To Confluence With Current River (Does Not Include River Segment In Gap Between Parkland Units)
- Forest Boundary At North Section Line Of Sec 4, T33n, R5e To Forest Boundary At South Section Line Of Sec 35, T32n, R5e
- The Most Upstream Portion Of Ozark National Scenic Riverways To The Most Downstream Portion Of Ozark National Scenic Riverways
- Markam Spring Recreation Area To Nf Boundary
- Western Edge Of Ozark National Scenic Riverways To Confluence With Alley Spring (Branch)
Track Magmont 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 Magmont Tailings Dam
Where does the data for Magmont 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 Magmont Tailings Dam.