National Register Properties in Oklahoma

PENSACOLA DAM

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DESCRIPTION: THE PENSACOLA DAM NEAR LANGLEY WAS THE FIRST HYDROELECTRIC FACILITY IN OKLAHOMA AND IS ALSO THE ONLY EXAMPLE OF A MULTIPLE-ARCH DAM IN THE STATE. IT IS ACCLAIMED TO BE THE LONGEST MULTI-ARCHED DAM IN THE WORLD. THREE BUILDINGS - A POWERHOUSE, A SUBSTATION, AND AN OBSERVATION HOUSE - AND FOUR STRUCTURES - THE MULTI-ARCHED DAM, TWO SPILLWAYS, AND A PUMPING/INTAKE STRUCTURE - COMPOSE THE DISTRICT. LOCATED ON GRAND RIVER, THE DAM CONSISTS OF FIFTY-ONE ARCH BARRELS SPANNING 4,284 FEET. THE DAM IS REINFORCED CONCRETE. JOHN DUNCAN FORSYTHE DESIGNED THE MODERN STYLED POWERHOUSE, A FIVE-STORY CONCRETE-WALLED BUILDING. THE POWERHOUSE IS 279 FEET LONG, 72 FEET WIDE, AND 80 FEET HIGH. THE LISTED IN NATIONAL REGISTER 9/2/2003.

NR ID Number 03000883

Historic Name

PENSACOLA DAM

Current Name

GRAND RIVER DAM

Project Name 

Latitude 36.47444
Longitude -95.02544

Address

STATE HIGHWAY 28 OVER GRAND RIVER, 1/2 MILE EAST OF INTERSECTION WITH STATE HIGHWAY 82

City

LANGLEY VICINITY

County

MAYES

County code

097

Lot

Block

Section

Township

Range

Type DISTRICT
Historic Function  INDUSTRY/PROCESSING/EXTRACTION: ENERGY FACILITY
Current Function INDUSTRY/PROCESSING/EXTRACTION: ENERGY FACILITY
Area Significance 1 ENGINEERING
Area Significance 2
Architect / Builder FORSYTHE, JOHN DUNCAN - ARCHITECT; HOLWAY, W.R. - CONTRACTOR
Date Prepared  JUNE 2003
Year Built 1938
Original Site  YES
Architectural  Style OTHER: MULTIPLE ARCH DAM MODERN MOVEMENT: MODERNE
Roof Material  ASPHALT
Wall Material CONCRETE
Window Material  UNCOLLECTED
Door Material UNCOLLECTED
Decorative Detail
Condition GOOD

 
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