Shasta Lake, also popularly known as Lake Shasta, is a
reservoir
A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation.
Reservoirs are created by controlling a watercourse that drains an existing body of wa ...
in
Shasta County, California, United States. It began to store water in 1944 due to the
impounding of the
Sacramento River by
Shasta Dam, the ninth-tallest
dam in the US.
Shasta Lake is a key facility of the
Central Valley Project and provides
flood
A flood is an overflow of water (list of non-water floods, or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant con ...
control for the
Sacramento Valley, downstream of the dam. Water outflow
generates power through the Shasta Powerplant and is subsequently used for
irrigation
Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has bee ...
and municipal purposes.
The reservoir lies within the
Whiskeytown–Shasta–Trinity National Recreation Area, operated by the
Shasta-Trinity National Forest.
The
California Office of Environmental Health Hazard Assessment (OEHHA) has formed a safe-eating advisory for fish caught in the lake, based on levels of
mercury and
PCBs found in local species.
The
Shasta-Keswick Reservoir system is significantly contaminated with
heavy metals, primarily due to contributions from four streams.
Three of these streams contain
acid mine drainage
Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines and coal mines.
Acid rock drainage occurs naturally within some environments as part of the rock weatherin ...
, with
Spring Creek
A spring creek is a type of free flowing river whose name derives from its origin: an underground Spring (hydrology), spring or set of springs which produces sufficient water to consistently feed a unique river. The water flowing in a spring cree ...
being the most notable contributor, releasing high concentrations of
cadmium
Cadmium is a chemical element; it has chemical symbol, symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12 element, group 12, zinc and mercury (element), mercury. Like z ...
,
copper
Copper is a chemical element; it has symbol Cu (from Latin ) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orang ...
and
zinc
Zinc is a chemical element; it has symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic tabl ...
into the water. At the points where these acid streams mix with lake water, localized toxicity occurs, posing an immediate threat to aquatic life. The
synergistic
Synergy is an interaction or cooperation giving rise to a whole that is greater than the simple sum of its parts (i.e., a non-linear addition of force, energy, or effect). The term ''synergy'' comes from the Attic Greek word συνεργία ' f ...
effects of these metals further exacerbate the environmental impact, leading to concerns about the safety of consuming fish from this water source.
Geography
With a capacity of at full pool, the lake has an
elevation
The elevation of a geographic location (geography), ''location'' is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational equipotenti ...
of , and a
surface area
The surface area (symbol ''A'') of a solid object is a measure of the total area that the surface of the object occupies. The mathematical definition of surface area in the presence of curved surfaces is considerably more involved than the d ...
of , making it the state's largest
reservoir
A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation.
Reservoirs are created by controlling a watercourse that drains an existing body of wa ...
, and its third-largest body of water after
Lake Tahoe
Lake Tahoe (; Washo language, Washo: ''dáʔaw'') is a Fresh water, freshwater lake in the Sierra Nevada of the Western United States, straddling the border between California and Nevada. Lying at above sea level, Lake Tahoe is the largest a ...
and the
Salton Sea
The Salton Sea is a shallow, landlocked, highly salinity, saline endorheic lake in Riverside County, California, Riverside and Imperial County, California, Imperial counties in Southern California. It lies on the San Andreas Fault within the S ...
.
Ten miles (16 km) north of the city of
Redding, with the town of
Lakehead on its northern shore, Shasta Lake is popular for
boating
Boating is the leisurely activity of travelling by boat, or the recreational use of a boat whether powerboats, sailboats, or man-powered vessels (such as rowing and paddle boats), focused on the travel itself, as well as sports activities, suc ...
,
water skiing, camping, house boating and fishing. Formed by the damming of the
Sacramento River, the lake has of mostly steep mountainous shoreline covered with tall evergreen trees and
manzanita. The maximum depth is .
The lake has four major arms, each created by an approaching river: the
Sacramento River, the
McCloud River,
Sulanharas Creek, and the
Pit River. The Sacramento River's source is the
Klamath Mountains
The Klamath Mountains are a rugged and lightly populated mountain range in northwestern California and southwestern Oregon in the western United States. As a mountain system within both the greater Pacific Coast Ranges and the California Coast R ...
. The McCloud River's source is
Mount Shasta
Mount Shasta ( ; Shasta people, Shasta: ''Waka-nunee-Tuki-wuki''; Karuk language, Karuk: ''Úytaahkoo'') is a Volcano#Volcanic activity, potentially active stratovolcano at the southern end of the Cascade Range in Siskiyou County, California. A ...
. The Pit River flows from
Alturas, and the waterfall Potem Falls is located on that arm of the lake.
History
Shasta Dam was constructed between 1935 and 1945 across the
Sacramento River, and Shasta Lake was formed in 1948. The
Pit River,
McCloud River, and several smaller
tributaries
A tributary, or an ''affluent'', is a stream or river that flows into a larger stream ('' main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which the ...
had their lower courses and
confluence
In geography, a confluence (also ''conflux'') occurs where two or more watercourses join to form a single channel (geography), channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main ...
s with the Sacramento River submerged by the reservoir. Also beneath the lake is the submerged town of
Kennett and many village sites of the
Wintun people together with their traditional fishing, hunting, and gathering locations. Parts of the defunct tunnels and right of way of the
Southern Pacific Transportation Company
The Southern Pacific (or Espee from the railroad initials) was an American Class I railroad network that existed from 1865 to 1996 and operated largely in the Western United States. The system was operated by various companies under the names ...
can be seen when the water level is low.
Shasta Lake hosted the first "Boardstock" event in 1996, which continued there annually through 1999, after which the annual event moved to
Clear Lake, California, 170 miles southwest of Shasta Lake. Boardstock drew many professional wakeboard riders from around the world, with an average attendance of 15,000 people. The event lasted for 3 days each year with several wakeboard contests being performed.
Marinas
There are a number of marinas on Shasta Lake offering a variety of services, including
houseboat rentals.
* Bridge Bay Marina is the largest marina on Shasta Lake, with over 700 slips. It has a restaurant and bar and lodging, as well as retail and other facilities. Visitors to Bridge Bay may rent one of 100 houseboats, as well as ski, fishing and patio boats, and personal
watercraft
A watercraft or waterborne vessel is any vehicle designed for travel across or through water bodies, such as a boat, ship, hovercraft, submersible or submarine.
Types
Historically, watercraft have been divided into two main categories.
*Raf ...
, such as
standup paddleboards,
jet skis and Jetovators. Bridge Bay sees a busy summer season, with a gas dock, food, ice and all retail amenities.
* Digger Bay Marina has over 150 boat slips in the marina, as well as a retail store and small boat rental. It is located about 10 miles from
Highway 5.
* Shasta Marina Resort is located off of exit no. 693 from I-5, at 16814 Packers Bay Road, in Lakehead. Offering Large luxurious houseboats, ski and
pontoon boats,
Sea-Doos, standup paddleboards and
kayaks for rent. There is houseboat and covered moorage, and a year-round store with a gas dock, food, ice and gifts.
* Antler's Marina is Shasta's northernmost marina.
* Silverthorn Marina is located on the eastern part of the lake and offers large houseboats for rent.
* Jones Valley Resort is the easternmost marina on the lake, tucked far into a cove, and features six different model rental houseboats, including the largest on the lake, the Titan.
* Holiday Harbor is located up the McCloud River arm, east of I-5.
* Sugarloaf Marina is located up the Sacramento River arm and offers a marina store, overnight slips and fuel.
Climate
Shasta Lake has a
hot-summer mediterranean climate
A Mediterranean climate ( ), also called a dry summer climate, described by Köppen and Trewartha as ''Cs'', is a temperate climate type that occurs in the lower mid-latitudes (normally 30 to 44 north and south latitude). Such climates typic ...
(
Csa) typical of the interior of
Northern California
Northern California (commonly shortened to NorCal) is a geocultural region that comprises the northern portion of the U.S. state of California, spanning the northernmost 48 of the state's List of counties in California, 58 counties. Northern Ca ...
with hot, dry summers and cool, wet winters, along with great diurnal temperature variation.
Gallery
File:ShastaLakeFromI-5.JPG, Lake Shasta from I-5
File:Shasta Lake low.JPG, Low waters on Lake Shasta
File:Lake shasta.triddle.jpg, Lake from the shoreline
File:Deer swimming in Lake Shasta.jpg, Deer swimming
Swimming is the self-propulsion of a person through water, such as saltwater or freshwater environments, usually for recreation, sport, exercise, or survival. Swimmers achieve locomotion by coordinating limb and body movements to achieve hydrody ...
in Lake Shasta
File:Shasta dam 2.jpg, Shasta Lake and Shasta Dam
See also
*
Shasta Dam - creates Shasta Lake by impounding the Sacramento River
*
Shasta Unit — ''of the Whiskeytown–Shasta–Trinity National Recreation Area''.
*
List of dams and reservoirs in California
*
List of largest reservoirs of California
*
List of lakes in California
There are more than 3,000 named lakes, reservoirs, and dry lakes in the U.S. state of California.
Largest lakes
In terms of area covered, the largest lake in California is the Salton Sea, a lake formed in 1905 which is now saline. It occup ...
References
*
*
External links
Current Conditions, Shasta Lake, California Department of Water Resources
{{authority control
Shasta
Sacramento River
Central Valley Project
Pit River
Shasta-Trinity National Forest
Trinity Mountains (California)
Reservoirs in Northern California
Reservoirs in California