Centralia Coal Mine Dam No 3b

Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateWashington
CountyLewis
Nearest CityCentralia
River/StreamTr-Hanaford Creek
Coordinates46.74110, -122.84812

Physical Characteristics

Dam TypeEarth
NID Height140 ft
Dam Length1,700 ft
Year Completed1980 (46 years old)

Storage & Hydraulics

NID Storage860 acre-ft
Max Storage860 acre-ft
Normal Storage230 acre-ft
Surface Area115 acres
Drainage Area0 sq mi
Max Discharge99 cfs

Ownership & Safety

PurposeTailings
OwnerTransAlta Centralia Mining LLC
Owner TypePublic Utility
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection08/27/2020
Emergency Action PlanYes

Identifiers

NID IDWA00434
Federal IDWA00434
More InfoState Dam Safety Program

Nearby Dams

Centralia Coal Mine Dam No 3c North 0.4 mi Significant Centralia Coal Mine Dam No 3a 0.4 mi Low Centralia Coal Mine Dam No 6b 0.5 mi Low Centralia Coal Mine Dam No 3c East 0.7 mi Significant Centralia Coal Mine Dam No 3c South 0.7 mi Significant Centralia Coal Mine Dam No 5 1.1 mi Low Centralia Coal Mine Dam No 5c 1.2 mi Low Centralia Coal Mine Dam No 36 1.2 mi Low Centralia Coal Mine Dam No 44 1.2 mi Low Centralia Coal Mine Dam No 36a 1.3 mi Low