Pearl River Lock 3 And Pools Bluff Sill
Pearl River Lock 3 And Pools Bluff Sill is a gravity dam located in St. Tammany Parish, Louisiana, built in 1950. It carries a Significant hazard potential classification.
About Pearl River Lock 3 And Pools Bluff Sill
The primary purpose of Pearl River Lock 3 And Pools Bluff Sill is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Usace - Vicksburg District (federal). It impounds the Pearl near Pearl River.
The dam stands 14 feet tall and stretches 430 feet across, creates a reservoir covering 46 acres, has a maximum storage capacity of 2,100 acre-feet, and collects water from a drainage area of 6,500 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 11/16/2016.
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Location
| State | Louisiana |
| County | St. Tammany |
| Nearest City | Pearl River |
| River/Stream | Pearl |
| Coordinates | 30.63813, -89.86803 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 14 ft |
| Dam Length | 430 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 2,100 acre-ft |
| Max Storage | 2,100 acre-ft |
| Normal Storage | 2,100 acre-ft |
| Surface Area | 46 acres |
| Drainage Area | 6,500 sq mi |
| Max Discharge | 7,500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | USACE - Vicksburg District |
| Owner Type | Federal |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 11/16/2016 |
| Emergency Action Plan | No |
Identifiers
| NID ID | LA00086 |
| Federal ID | LA00086 |
| More Info | State Dam Safety Program |