Shasta Dam is a 602-foot-tall gravity dam on the Sacramento River in northern California that serves mainly for long-term water storage and flood control in its reservoir, Shasta Lake. Its construction from 1937 to 1945 provided thousands of jobs and was considered one of the greatest engineering feats of the time. Building the dam required transporting over 12 million tons of gravel using the world's longest conveyor belt and relocating over 30 miles of railroad track. Today, Shasta Dam generates hydroelectric power and provides water supplies while allowing for recreation at Shasta Lake.

1.  prepared by :
 Hemn akram
Supervisor:
m.goran

2.  Introduction
 Shasta dam
 Construction
 Preparations and camps
 shasta Spillway
 Shasta Power Plant
 Shasta Temperature Control Device
 Shasta Transformer Deck
 Tours and recreation

3. dam: is a barrier that impounds water or
underground streams. Dams generally serve the
primary purpose of retaining water, while other
structures such as floodgates or levees (also
known as dikes) are used to manage or prevent
water flow into specific land regions. Hydropower
and pumped-storage hydroelectricity are often
used in conjunction with dams to generate
electricity. A dam can also be used to collect water
or for storage of water which can be evenly
distributed between locations.

4.  Arch dams
 Gravity dams
 Arch-gravity dams
 Barrages
 Embankment dams

5.  Power generation
 Water supply
 Stabilize water flow / irrigation
 Flood prevention
 Land reclamation
 Water diversion
 Navigation
 Recreation and aquatic beauty

6. Shasta Dam (called Kennett Dam before its
construction) is a gravity dam across the
Sacramento River in the northern part of the
U.S. state of California, at the north end of the
Sacramento Valley. The dam mainly serves
long-term water storage and flood control in
its reservoir, Shasta Lake, and also generates
hydroelectric power. At 602 feet (183 m) high,
it is the ninth-tallest dam in the United States
and forms the largest reservoir in California.

9.  to release for irrigation andsalinity control in
the Delta.
 flood control.
 to protect communities along the Sacramento
River.
 water supply benefits.
 Meet recreational and environmental needs.
 power generation.

10. Construction started in earnest in 1937 under the
supervision of Chief Engineer Frank Crowe. During its
building, the dam provided thousands of much-needed
jobs; it was finished twenty-six months ahead of
schedule in 1945. When completed, the dam was the
second-tallest in the United States after Hoover, and was
considered one of the greatest engineering feats of all
time. Status In use
Construction beg
an
1938
Opening date 1945
Owner(s) U.S. Bureau
Of Reclamation

11.  The World’s Longest Conveyor Belt
 The Pit River Bridge
 Southern Pacific Railroad
 Concrete Placement

12. Over twelve million tons of gravel would
be needed to build the massive dam, and
a good supply was found along the
Sacramento River in Redding, California.
To transport all that gravel, the world’s
longest conveyor belt was built to deliver
the gravel to the old mining town of
Coram, just downstream of the dam site.
The belt was an amazing (15.3 km) long
and operated 24 hours a day for several
years.

13. The early phase of dam construction also included
moving over 30 miles of Southern Pacific Railroad
track which was running right through the dam site.
Moving the train was a major undertaking, and
required the building of many bridges, trestles and
tunnels. One tunnel, shown here, was built right
through the hillside to temporarily detour the train
around the dam site so excavation of the western
abutment could begin. This was just part of a much
bigger plan.

14. The plan also included the Pit River Bridge, a massive
double-deck bridge which includes both Interstate 5
and the train, crossing over Shasta Lake (note train
on lower deck). After this bridge was built they were
able to permanently relocate the train to its new
home above Shasta Lake where it still runs today.

15. Building of the
dam's main
concrete structure
started in July 1940
after the cable
systems had been
completed and the
mixing plant came
on line. Steel
buckets capable of
carrying 8 cubic
yards (6.1 m3) of
concrete, weighing
16 tonnes when
full, traveled back
and forth along the
lines.

16. For three years,
thousands of men
labored building the
dam's massive
abutments pouring
concrete into large
modular "blocks"
(15 m) square and
(1.5 m) deep. These
blocks were shaped
using wooden
forms, which were
removed when the
concrete dried and
rebuilt to handle the
next block above it.

17. Workers were busy building the abutments of the dam
until 1943, when it was time to start the spillway. Up
until this time, the Sacramento River had continued to
flow in its original channel,
right through the middle
of the dam site. During
this same time workers
were also busy working
on completing a new path
for the Southern Pacific
Railroad.

18. After the new train track was completed, the Southern
Pacific Railroad was ready to run on its new course.
With this relocation, workers
at the dam site were now able
to divert the Sacramento River
through the same tunnel that
was used earlier as a
temporary detour for the train.
This allowed them to clear out
the original river channel and
complete the construction of
Shasta Dam.

19. Shasta Power Plant A visit to Shasta Power Plant shows us
the five huge generators capable of producing 710
megawatts.
These generators have
recently undergone an
upgrade, increasing their
efficiency rating to 98%, using
today's latest technology. Put
into operation in 1944, Shasta
Power Plant has been
producing power for over 60
years.

20. Today when we go
outside at the base of
the dam we get a
magnificent view of the
finished product.
Shasta Dam’s spillway
is used to provide
flood control – the 18
valves, or outlets, seen
on the face of the dam
allow operators to
manage the lake level,
providing flood control
downstream. At the
top are massive steel
drum gates, also used
in the management of
the lake level.
Spillways 1
Type of spillw
ay
River outlets+triple drum
gates
Spillway capa
city
(7,580 m3/s)

21. The Temperature Control Device (TCD) was
designed to ensure cold water releases to
the river, providing suitable habitat for
downstream fish populations and fish
spawing. Completed in 1997, this
underwater construction project is the
largest of its type ever built. With the TCD,
managers at Shasta Dam are now able to
withdraw water from a range of depths,
including the deeper, colder water, sending
it through the generators, maximizing
power generation, while meeting water
commitments and environmental needs
downstream.

22. Once power is
generated it is sent to
transformers where the
voltage is increased
from 13,000 volts to
230,000 volts for
transmission. The
Western Area Power
Administration is
responsible for selling
federally produced
power for use in the
west. Power is sold to
public power customers
throughout the 15
Western States.

23.  Reclamation holds guided tours of the Shasta Dam
year round, each taking two to three hours. There
also are a visitor center and auditorium. The tours
comprise a 428-foot (130 m) elevator ride to the
base of the dam, and visits to the dam's inner
galleries and the powerhouse among other
areas.Shasta Lake has a surface of 30,310 acres
(12,270 ha) at full pool and is surrounded by the
Shasta-Trinity National Forest

24. . Many public and private marinas, campgrounds, RV
parks, resorts and boat launches border the
reservoir, one of the most popular recreational lakes
in California. Houseboating, water-skiing, swimming
and fishing are among the numerous activities
available at the lake; hiking, picnicking, mountain
biking, hunting and camping are popular in the
mountainous vicinity surrounding it.

26.  https://maps.google.com/
 http://www.shastalake.com/shastadam/
 http://www.tworvgypsies.us/photos-25-redding-ca-shasta-
dam.html
 http://www.usbr.gov/mp/ncao/shasta/
 http://www.usbr.gov/projects/Facility.jsp?fac_Name=Shasta+
Dam
 http://en.wikipedia.org/wiki/Shasta_Dam