Grays Landing Lock And Dam

Significant HazardNot Available ConditionEmergency Action Plan: Yes

Location

StatePennsylvania
CountyGreene
Nearest CityGRAYS LANDING
River/StreamMONONGAHELA RIVER
Coordinates39.82355, -79.92201

Physical Characteristics

Dam TypeGravity
NID Height33 ft
Dam Length680 ft
Year Completed1995 (31 years old)

Storage & Hydraulics

NID Storage12,500 acre-ft
Max Storage12,500 acre-ft
Normal Storage12,500 acre-ft
Surface Area796 acres
Drainage Area4,460 sq mi
Max Discharge80,000 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeNavigation
OwnerUSACE - Pittsburgh District
Owner TypeFederal
Hazard ClassificationSignificant
Condition AssessmentNot Available
Last Inspection05/12/2025
Emergency Action PlanYes

Identifiers

NID IDPA00124
Federal IDPA00124
More InfoState Dam Safety Program

Nearby Dams

Robena Slurry Pond No 4 1.3 mi Low Slurry Pond No. 1 1.3 mi Low Robena Pond No 6 1.8 mi Low Hatfield Ferry Sedimentation Pond 2.6 mi Significant Colvin Sedimentation Pond 2.7 mi Significant Lewis 4.2 mi Significant Pegs Run Slurry Impoundment 4.6 mi Low Point Marion Lock And Dam 6.7 mi Significant Luzerne Coal Co Wetland 7.4 mi Low Crooked Run (ft Martin) #3 7.6 mi High