Lake Oroville Spillway Repairs: General Overview February 21, 2017

Oroville Spillway Public Info Line: (530) 538-7826

B a l d

R o c k

Bidwell Bar Bridge
F o r e m a n

C r e e k

R e c r e a t i o n

A r e a

Portion
of image
derived
from
GoogleEarth
source

Hwy 162

P o t t e r s

R a v i n e

R e c r e a t i o n

Canyon
Drive

O r o v i l l e

Flood
Control
Spillway

Royal
Oaks
Drive

D a m
Oroville Dam Blvd E

Hyatt
Powerplant

Flood Control
Spillway
Damage Zone

Diversion
Pool
Tailrace

➍

➎

A r e a

Oroville Dam
Upper Overlook
(Staging Area)

Oroville Dam Crest Road

➊

➋

R e c r e a t i o n

Flood Control Spillway
Control Structure ➌
Emergency
Spillway
Work Area

Emergency
Spillway
Discharge
Zone

O r o v i l l e

R i d g e

Emergency Spillway

Spillway Boat Ramp
Parking Lot

Transmission
Lines

L a k e

A r e a

K e l l y

➏

➎

Thermalito Diversion Pool

Oro Powerhouse Road

Oroville Dam Blvd E

Cooperating Agencies: Butte County Sheriff, Oroville Police Department, Butte County OES, Oroville Fire Department, Butte County Public Works, Oroville Hospital, California Highway Patrol, California State Parks, PG&E, CAL FIRE, Caltrans, Red Cross,
California Conservation Corps, California National Guard, California Department of Fish and Wildlife, Bureau of Indian Affairs, CAL OES, USACE, FERC, FEMA 
For more imagery see DWR Pixel
Emergency Spillway
Work Area ➊ DWR
continues to reinforce
the Emergency
Spillway and reestablish access roads,
with construction
crews working around
the clock.

Emergency Spillway
Discharge Zone ➋ This
area has been inspected
and continues to be
monitored for any
erosion. Transmission
lines have been
inspected and function
normally.

Flood Control
Spillway Control
Structure ➌
Monitoring
of structure
continues.
Operations are
normal.

Flood Control Spillway
Damage Zone ➍
Assessment of structure
continues as flows
are reduced. Plans to
maintain and repair
the structure will be
presented as they
develop.

Thermalito
Diversion Pool to
Hyatt Powerplant
➎ Erosion debris
to be removed
in order to begin
operations at Hyatt
Powerplant as soon
as practical.

Hyatt Powerplant/
Diversion Pool Tailrace ➏
Reducing the water surface
elevation of the tailrace
will be accomplished
through the downstream
debris removal process,
thus allowing for Hyatt
Powerplant startup.

Monitoring Truck
Traffic on Oroville
Dam Roads: Effects
of vehicle travel
on Oroville Dam
Road and Oro
Powerhouse Road
are being closely
monitored.

Trails and Boat Launch Ramps:
The Brad Freeman and Dan
Beebe Trails in the area around
the Diversion Pool have been
closed. The Spillway Boat Ramp
will remain closed until further
notice. For current information
on launch ramps, visit the
State Parks website.

Road Blocks/Security
Checkpoints: Oroville
Dam East at Glen
Drive; Oroville Dam
East at Canyon Drive;
Dam Crest Road
at Spillway Access
Road; Canyon Drive
at Royal Oaks Drive.

water.ca.gov
https://cdec.water.ca.gov/
reservoir.html