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Willow Island

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Particulars

Owner: American Municipal Partners (AMP)

Designer: MWH-Stantec

Contractor: Ruhlin

Statistics

Type: Hardfill

Purpose(s): Hydropower

Reservoir capacity: unknown

Height: 20 metres

Length: 66 metres

Volume of RCC: 49 m3x103

Total volume: unknown

Construction Dates

Start of Project: 12/11 (December 2011)

Start of RCC: 11/13 (November 2013)

End of RCC: 04/14 (April 2014)

End of Project: 02/16 (February 2016)

Country: USA

River: Ohio

DMS Co-ordinates: 39˚21'25.83"N, 81˚19'4.8"W

DD Co-ordinates: 39.357174, -81.318001

Facings

Upstream

SlopeType
0.80RCC against precast concrete blocks

Downstream

SlopeType
0.80RCC against precast concrete blocks

Spillway

SlopeType
separate 

Placement

Layers (mm)Lifts (mm)
230230

Cementitious material

Cement (kg/m3)
116
Pozzolan (kg/m3)Pozzolan Type
62Low-lime flyash (ASTM Class F)