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Re: OROVILLE DAM -- On verge of Bursting ??
Author: CPRR
Date: 02-10-2017 - 16:15
No chance, there are other ways to get water out from behind the dam:
The Oroville Dam is the highest earthfill dam in the United States. The embankment is made up of an inclined impervious clay core resting on a concrete core block, with appropriate transitions and rock-filled shell zones on both sides.
The spillway, located on the right abutment of the dam, has two separate elements: a controlled gated outlet and an emergency uncontrolled spillway. The gated control structure consists of an unlined approach channel, gated headworks, and a lined chute. The concrete-lined chute, 3,050 ft long, extends from the flood control outlet down to a terminal structure where the water flows into the Feather River. The emergency uncontrolled spillway is designed so that water could flow over the emergency spillway weir and down the undeveloped canyon slope to the river.
The Palermo Outlet Works, concrete-lined and approximately 2,430 ft long, was designed to release water into the Palermo Canal located downstream of the Dam. It has two separate structures: intake portal and downstream portal. The intake portal structure consists of a short length of cut-and-cover tunnel section while the downstream portal structure consists of a concrete headwall and wingwalls paralleling the channel.
Application and Technical Exhibits
Oroville Facilities—FERC Project No. 2100
Table A.2.1-2. Oroville Dam, Oroville Dam Spillway, and outlet technical data.
Oroville Dam
Type Earthfill
Volume 80,000 cubic-yards
Height from Base of Dam 770 ft
Crest Elevation 922 ft msl
Crest Width 51 ft
Crest Length 6,920 ft
Oroville Dam Spillway
Emergency Spillway
Type Overflow weir
Crest Elevation 901 ft msl
Crest Length 1,730 ft
Control Spillway
Type Gated outlet
Ogee Crest Elevation 813.6 ft mil
Control 8 radial gates, each 17ft-7in. wide by 33ft- 6in. high.
Controlled Maximum Flow 150,000 cfs
Palermo Outlet Works Tunnel
6 ft diameter with valve chamber
Capacity 40 cfs
Valve Type 12 in. fixed-cone dispersion valve
Intake Structure Length 27 ft
Invert Elevation 549 ft msl
Downstream Structure Flume type Reinforced concrete
Flume width 5 ft
River Outlet Tunnel
Discharges into Diversion Tunnel No. 2 Capacity 5,400 cfs
Valve Type Two 72 in. fixed-cone dispersion valves
The Oroville Dam is the highest earthfill dam in the United States. The embankment is made up of an inclined impervious clay core resting on a concrete core block, with appropriate transitions and rock-filled shell zones on both sides.
The spillway, located on the right abutment of the dam, has two separate elements: a controlled gated outlet and an emergency uncontrolled spillway. The gated control structure consists of an unlined approach channel, gated headworks, and a lined chute. The concrete-lined chute, 3,050 ft long, extends from the flood control outlet down to a terminal structure where the water flows into the Feather River. The emergency uncontrolled spillway is designed so that water could flow over the emergency spillway weir and down the undeveloped canyon slope to the river.
The Palermo Outlet Works, concrete-lined and approximately 2,430 ft long, was designed to release water into the Palermo Canal located downstream of the Dam. It has two separate structures: intake portal and downstream portal. The intake portal structure consists of a short length of cut-and-cover tunnel section while the downstream portal structure consists of a concrete headwall and wingwalls paralleling the channel.
Application and Technical Exhibits
Oroville Facilities—FERC Project No. 2100
Table A.2.1-2. Oroville Dam, Oroville Dam Spillway, and outlet technical data.
Oroville Dam
Type Earthfill
Volume 80,000 cubic-yards
Height from Base of Dam 770 ft
Crest Elevation 922 ft msl
Crest Width 51 ft
Crest Length 6,920 ft
Oroville Dam Spillway
Emergency Spillway
Type Overflow weir
Crest Elevation 901 ft msl
Crest Length 1,730 ft
Control Spillway
Type Gated outlet
Ogee Crest Elevation 813.6 ft mil
Control 8 radial gates, each 17ft-7in. wide by 33ft- 6in. high.
Controlled Maximum Flow 150,000 cfs
Palermo Outlet Works Tunnel
6 ft diameter with valve chamber
Capacity 40 cfs
Valve Type 12 in. fixed-cone dispersion valve
Intake Structure Length 27 ft
Invert Elevation 549 ft msl
Downstream Structure Flume type Reinforced concrete
Flume width 5 ft
River Outlet Tunnel
Discharges into Diversion Tunnel No. 2 Capacity 5,400 cfs
Valve Type Two 72 in. fixed-cone dispersion valves
