Fmc Granger Tailings Pond Phases 1e -1j Reservoir Report
Last Updated: December 15, 2025
The Fmc Granger Tailings Pond Phases 1e -1j, located in Sweetwater, Wyoming, is a privately owned Earth dam structure designed by Dan Dean for the purpose of tailings storage.
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Summary
Completed in 2013, this dam stands at a height of 24 feet with a hydraulic height of 25 feet and a structural height of 28 feet. It has a NID storage capacity of 21,800 acre-feet and a surface area of 1,020 acres, situated along the Blubell Draw river or stream.
With a low hazard potential and satisfactory condition assessment, the Fmc Granger Tailings Pond is regularly inspected, with the last inspection date in July 2017. Despite its high risk assessment rating of 2, the dam is deemed to meet regulatory guidelines and has not experienced any discharges or overflow events. The dam does not have a spillway system, outlet gates, or locks, but is equipped to handle emergency situations with updated emergency action plans and contact information.
This tailings pond facility plays a crucial role in managing waste materials from mining operations, highlighting the importance of proper design, construction, and maintenance of such structures in ensuring water resource sustainability and climate resilience in the region.
Year Completed |
2013 |
Dam Length |
11000 |
Dam Height |
24 |
River Or Stream |
BLUBELL DRAW |
Primary Dam Type |
Earth |
Surface Area |
1020 |
Hydraulic Height |
25 |
Drainage Area |
1.6 |
Nid Storage |
21800 |
Structural Height |
28 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams 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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Fmc Granger Tailings Pond Phases 1e -1j