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Kentucky Dam creates the
largest manmade lake in the eastern United States.
It backs up the Tennessee River for 184 miles and
creates a lake that stretches south across the
western tip of Kentucky and nearly the entire width
of Tennessee. At maximum normal operating level,
Kentucky Lake covers 160,300 acres.
More important than the project's size are the jobs
it performs. Kentucky Dam is the spigot that TVA
(Tennessee Valley Authority) uses to help control
floods on the lower Ohio and Mississippi rivers; it
is the gateway to the Tennessee River waterway and
is a major generating plant in the TVA power system.
Construction
The huge job of building Kentucky Dam took six years
from the start of construction on July 1, 1938,
until the reservoir began filling on August 30,
1944. At the peak of construction TVA had nearly
5,000 men at work building the dam and preparing the
reservoir area. The dam, which is more than a mile
long and rises 206 feet above its foundation,
required 1,356,000 cubic yards of concrete and
5,582,000 cubic yards of earth and rock fill. The
project cost about $118 million.
Flood
Control
The Tennessee is the nation's fifth largest river
within the lower 48 states in terms of flow.
Kentucky Dam is just 22 miles upstream from Paducah,
Kentucky where the Tennessee River flows into the
Ohio. Water from the 40,200 square mile Tennessee
Valley passes through the dam. This strategic
location and the vast flood storage capacity of
Kentucky Lake make it possible for Kentucky Dam to
reduce or even temporarily shut off the flow of
water from the Tennessee to help lower flood crests
on the Ohio and Mississippi rivers. With the other
dams in the TVA system, it helps provide flood
protection to 6 million acres of land in the lower
Ohio and Mississippi valleys and reduces the
frequency of flooding on another 4 million acres. In
the many years since Kentucky Dam was completed,
this flood regulation has reduced damages in those
areas by millions of dollars.
Navigation
Projects to improve navigation conditions on the
lower Tennessee River began shortly after the Civil
War, but it was Kentucky Dam and lock which finally
provided a first-order channel for today's big
inland towboats and barges. Kentucky Lake is the
first step in a stairway of navigable TVA lakes that
allow modern 9-foot draft vessels to travel the
650-mile-long main river the year round. Since
impoundment of Kentucky Lake in 1945, completing
this waterway and linking the Tennessee Valley with
the 21 state inland waterway system, freight traffic
on the Tennessee has grown from 2 million tons a
year to more than 31 million tons.
The lock, at the eastern end of the dam, handles
more than 2,000 loaded barges a month. This normally
requires lifts of about 55 feet between the river
below the dam and the lake behind it. A river tow
bound upstream may carry steel from the north, grain
from the midwest, or petroleum products, chemicals,
or ores from the Gulf Coast. Down-bound tows carry a
variety of Tennessee Valley products to other
regions, including nuclear reactor vessels too large
to travel overland.
Power
Generation
The five turbine-generators in Kentucky Dam
powerhouse have a total capacity of 175,000
kilowatts. They harness the river's flow to generate
up to 1.3 billion kilowatt-hours of electricity each
year. Some of this water comes from the river's
headwaters and already has helped to spin turbines
at a dozen other TVA dams as it flows a thousand
winding miles down the Tennessee Valley.
Recreation
Kentucky Lake is a magnet for vacationers and
fishermen from a wide area of mid- America, with
recreation use amounting to some 17 million visits
each year. Along its nearly 2400 miles of
cove-studded shoreline are many boat docks and
resorts, 4 state parks, the Tennessee National
Wildlife refuge, 48 public access areas, 2 county
parks, 5 municipal parks, 2 state wildlife
management areas, 10 group camps and clubs, 92
commercial recreation areas, and 3 small wildlife
areas.
Kentucky
Lake History
At 8,422 feet, Kentucky is TVA's Longest dam.
Construction on the dam began in 1938 and the
reservoir began filling six years later. To provide
a dry river bed for construction, huge cofferdams
were built in three stages, starting on the east
side and working to the west embankment. The first
stage enclosed 26 acres for workers to construct the
navigation lock. In the second stage, 40 acres were
enclosed for constructing the powerhouse and 9 of
the spillway bays. The third stage enclosed about 30
acres for completion of the remaining spillway bays.
The impact Kentucky Dam would have on flood control
and commercial navigation was foreseen by TVA
designers. Electrical generation was not a top
priority in the original design; but today's
generators contribute about 1.3 billion kilowatt
hours of electricity each year for TVA's power
system.
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Lake Barkley ●
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Lake Barkley is the
westernmost project in a series of dams along the
Cumberland River and its tributaries. Lake Barkley
was impounded by the U.S. Army Corps of Engineers in
1966. The dam impounds the Cumberland River near
Grand Rivers, Kentucky, approximately 38 miles up
stream from where the Cumberland empties into the
Ohio River. One mile above the dam is a canal
connecting Lake Barkley with Kentucky Lake, forming
one of the greatest freshwater recreational
complexes in the country. The lakes run parallel
courses for more than 50 miles with Land Between the
Lakes recreational area located between them. Lake
Barkley is 134 miles long with a shoreline measuring
1,004 miles.
As with the formation of Kentucky Lake, communities
were flooded in the 1960's to build Lake Barkley.
You may hear someone refer to Eddyville and "Old
Eddyville", as well as Kuttawa and "Old Kuttawa".
The "Old" areas were the portions of the cities that
were left above the water after the areas were
flooded. You will notice these old areas are now
lakefront. The present day cities were created after
the lake was formed. Old foundations and streets,
previously flooded, are still visible during winter
pool. Highways were even relocated including US 68
and US 62 along with state routes and smaller
streets. The Illinois Central Railroad was relocated
and can still be seen under water from low flying
planes above.
Lake Barkley provides a variety of outdoor
recreational opportunities for millions of visitors
each year. Natural conditions at Lake Barkley make
it possible for the public to participate in
activities such as hiking, fishing, hunting,
camping, picnicking, and boating. In addition, there
is a Civil War Monument, historic relics, commercial
marinas, public parks and wildlife refuges. The many
species of wildlife here, including golden and bald
eagles, make bird watching and nature photography
exciting pastimes.
Barkley is a multiple-purpose project designed for
flood control, navigation, and hydropower. Two
additional purposes for which Lake Barkley is
managed are recreation and fish and wildlife.
Lake Barkley belongs to its visitors. Treat the area
with respect by keeping it clean and attractive.
Enjoy yourself, have a safe visit, and come again.
History
Lake Barkley is a shallow water lake impounding
118.1 miles of the Cumberland River from River Mile
30.6 above its confluence with the Ohio River to
Cheatham Dam (River Mile 148.7). It is the lowermost
mainstream project for the Cumberland River System.
Barkley Dam was authorized in the River and Harbor
Act of 1954. The project was first identified as the
Lower Cumberland Project, but was later redesignated
as Barkley Lock and Dam and Lake Barkley in honor of
the late Alben W. Barkley, the 35th vice president
of the United States and late senator and a Paducah,
Kentucky native.
Barkley
Canal
One unique feature of Lake Barkley is the
interconnecting canal between Lake Barkley on the
Cumberland River and Kentucky Lakeon the Tennessee
River. The Cumberland River entrance is
approximately 2.2 river miles above Barkley Dam with
the Tennessee River entrance located about 2.9 miles
upstream from Kentucky Dam. The canal, with a bottom
width of 400 feet and a length of 1.75 miles,
provides a navigable channel for both commerce and
recreation craft moving on the two waterways. Both
reservoirs are operated as a unit for flood control
and the production of hydroelectric power.
Barkley
Lock
The navigation lock is located on the left bank of
the main dam structure. The lock was opened to
navigation in July of 1964 and has clear chamber
dimensions of 800’ x 110’ x 57’. The gravity fill
and empty system, exchanges 37,500,000 gallons of
water per lockage. The lock is operated 24 hours per
day with 1 operator per shift.
Barkley
Power Plant
The Barkley Power Plant started operation in early
1966 when the first of its four units were placed on
line. Each of Barkley’s four generators is capable
of producing 32,500-kilowatt hours. As of September
1992 Barkley’s Power Plant had saved the use of over
46 million barrels of oil valued in excess of $920
million, by generating electricity instead.
Lake
Levels
The lake's level is fluctuated from summer to winter
for flood control purposes. Summer pool (359 ft. sea
level) is normally reached by May 1. The water level
begins dropping gradually on July 1, and winter pool
(354 ft.) is reached by December 1. The spring rise
starts April 1. The lake's water surface area varies
accordingly from 57,920 acres at summer pool to
45,210 acres at winter pool.
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