WSP07874

• File Number: 8220.111.A
• Description: Central Utah Participating Project
• State: UT
• Basin: Colorado Mainstem
• Date: 1/1/1973
• Author: The Central Utah WCD
• Title: Central Utah Project Six Units
• Water Supply Pro - Doc Type: Publication

The Bonneville Unit, now under
construction, is the largest and
most complex of the authorized
unitsofthe Central Utah Project.
Greater utilization of Bonneville
Basin water made possible by the
'Jnit plan and a trans-basin diver-
sion of water will serve the needs
of a growing population in the
Bonnevirre Basin. This complex
unit includes ten new reservoirs
and theenJargement of two exist.
ing reservoirs; more than 140
miles of aqueducts, tunnels, and
canal; three powerplants; nine
pumping plants and 200 miles of
pipe drains.

Starvation Reservoir, constructed
on Strawberry River three miles
above Duchesne, has a capacity
of 167,000 acre-feet. It stores
high flows of the Duchesne and
Strawberry Rivers. Storage water
is used both for late season irriga-
tion of about 26,000 acres of land
along the Duchesne River and to
replace water presently used in
that area which will be diverted
to the Bonneville Basin.

Crossing the south flank of the
Uinta Mountains, the Strawberry
Aqueduct, about 37 miles long,
will collect flows from Rock
Creek and seven other streams
tributary of the Duchesne River.
The Upper Stillwater and Currant
Creek Reservoirs will serve as
equalizing reservoirs along the
aqueduct. Water will flow by gra-
vity through the aqueduct to the
enlarged Strawberry Reservoir.
The completed Soldier Creek
Dam, about 7 miles downstream
from the Strawberry Dam, has
increased the potential capacity
of Strawberry Reservoir 4 times

from 283,000 to 1,100,000 acre-
feet. Strawberry Reservoirwill be
a long-term storage reservoir.

The new 6.5-mire-long pressur-
ized Syar Tunnel will divert stor-
age water from Strawberry Res-
ervoir through the Wasatch Div-
ide to the Bonneville Basin. Ap-
proximately 197,000 acre-feet of
water will be released annually
through the tunnel, including
61,000 acre-feet of present yield
from the existing Strawberry
Reservoir.

Water descending about 2,000
feet to the Bonneville Basin floor
will flow through the Syar, Sixth
Water, and Dyne powerplants of
the Diamond Fork PowerSystem.
The plants will have a total gener-
ating capacity of about 133,000
kilowatts.

During the non irrigation season,
about 97,000 acre-feet of water
will be released to turn the pow.
er-plant turbines. These waters
will be stored in four reservoirs:
(11 Utah Lake. (21 the 51.500

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acre-foot capacity Hayes Reser-
voir on Diamond Fork, 131 the
enlarged Mona Reservoir, or (4)
the existing Sevier Bridge Reser-
voir. Water released from these
reservoirs will irrigate project land
or will be used for municipal and
industrial purposes. Wasatch Aq-
ueduct. Mona-Nephi Canal and
Nephi-Sevier Canal will convey
irrigation water from the power-
plants and reservoirs to lands in
Utah and Juab Counties and the
Sevier River Basin. Municipal and
industrial water released from
Strawberry Reservoir will be used
in south Utah and Juab Counties.