Ponderay Newsprint Mill Settling Lagoon is an earth dam located in Pend Oreille County, Washington, built in 1989. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 2,250 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Ponderay Newsprint Mill Settling Lagoon
Ponderay Newsprint Mill Settling Lagoon is a dam in Pend Oreille, Washington. The dam is owned by Ponderay Real Estate LLC (private). It impounds the Pend Oreille River-offstream near Usk.
The dam stands 24 feet tall and stretches 2,250 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 105 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1989, the structure is 37 years old.
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.
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Location
| State | Washington |
| County | Pend Oreille |
| Nearest City | Usk |
| River/Stream | Pend Oreille River-offstream |
| Coordinates | 48.29981, -117.27515 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Length | 2,250 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 105 acre-ft |
| Max Storage | 105 acre-ft |
| Normal Storage | 82 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Ponderay Real Estate LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00598 |
| Federal ID | WA00598 |
| More Info | State Dam Safety Program |