Simplot Decant Pond
Simplot Decant Pond is a dam located in Power County, Idaho, built in 2009. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Simplot Decant Pond
The primary purpose of Simplot Decant Pond is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is private-owned. It impounds the Ground Water Unnamed Stream near I-86.
The dam stands 21 feet tall, creates a reservoir covering 12 acres, has a storage capacity of 146 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2009, the structure is relatively new.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/26/2018.
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Location
| State | Idaho |
| County | Power |
| Nearest City | I-86 |
| River/Stream | Ground Water Unnamed Stream |
| Coordinates | 42.90640, -112.51860 |
Physical Characteristics
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Year Completed | 2009 (17 years old) |
Storage & Hydraulics
| NID Storage | 146 acre-ft |
| Normal Storage | 146 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Tailings |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/26/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00717 |
| Federal ID | ID00717 |
| More Info | State Dam Safety Program |