Upper Stillwater
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Upper Stillwater completed
Particulars
Owner: unknown
Designer: US Bureau of Reclamation
Contractor: Tyger Construction Co. Inc. (Atkinson Group)
Statistics
Type: Gravity
Purpose(s): Irrigation / Water Supply
Reservoir capacity: 37 m3x106
Height: 91 metres
Length: 815 metres
Volume of RCC: 1125 m3x103
Total volume: 1281 m3x103
Construction Dates
Start of Project: 12/83 (December 1983)
Start of RCC: 09/85 (September 1985)
End of RCC: 08/87 (August 1987)
End of Project: 12/87 (December 1987)
Country: USA
River: Rock Creek
DMS Co-ordinates: 40˚33'35.62"N, 110˚41'54.52"W
DD Co-ordinates: 40.559895, -110.698479
Facings
Upstream
| Slope | Type |
|---|---|
| Vertical | Slip-formed/extruded facing elements |
Downstream
| Slope | Type |
|---|---|
| 0.32 | Slip-formed/extruded facing elements |
| 0.60 | Slip-formed/extruded facing elements |
Spillway
| Slope | Type |
|---|---|
| 0.32 | Slip-formed/extruded facing elements [stepped face] |
| 0.60 | Slip-formed/extruded facing elements [stepped face] |
Placement
| Layers (mm) | Lifts (mm) |
|---|---|
| 300 | 300 |
Cementitious material
| Cement (kg/m3) |
|---|
| 79 |
| Pozzolan (kg/m3) | Pozzolan Type |
|---|---|
| 173 | Low-lime flyash (ASTM Class F) |
