Lake Isabella, California, USA

Lake Locations:

USA - West - California - High Sierra -

Also known as:  Isabella Reservoir

Lake Isabella is an 11,200 acre reservoir in Kern County, California, about 35 miles northeast of Bakersfield. The U.S. Army Corps of Engineers created the lake, also known as Isabella Reservoir, in 1953 for flood control along the Kern River, irrigation water storage, and hydroelectric generation. Tucked into the southern end of the Sierra Nevada Mountains, the lake enjoys warm summer temperatures and mild winters. Offering year-round recreational opportunities, Lake Isabella has become a premier California vacation destination.

Two dams impound Lake Isabella: the Main Dam and the Auxiliary Dam. In 2006 a leak was found in the Auxiliary Dam. The Corps of Engineers lowered the water level 20 feet below normal full pool (2585 feet above sea level) to investigate the leak and determine corrective measures.

While visiting the lake, carve out some time to go fishing. A pastime enjoyed by many, Lake Isabella is home to many species that live beneath the surface, including bluegill, carp, crappie, hybrid striped bass, largemouth bass, perch, rainbow trout, smallmouth bass, striped bass, white bass, and yellow bass. In fact, bass fishing is so good here that local anglers are sure that a record-making largemouth bass specimen will soon be caught. As always, make sure you have a valid California fishing license before you arrive.

On any warm day, you’ll find the lake spotted with boats of all shapes, sizes, and speeds. Canoes and kayaks take tranquil strolls around coves, sail boats catch the strong summer breezes, pontoon boats enjoy leisurely cruises, and power boats speed their way around the 38 miles of Lake Isabella shoreline, often pulling wakeboarders and waterskiers behind them. But before heading out into those inviting waters, be aware that all boats must display a valid Lake Isabella boat permit, available at any marina on the lake.

The refreshing, cool waters of Lake Isabella stand in contrast to summer temperatures that can reach 100 degrees, almost begging you to take a long swim. Grab a tube or water toy and float along, watching birds swoop above or cottony clouds drift by. Swimming is not permitted more than 300 feet from shore.

Due to Lake Isabella’s prime location adjacent to the Sequoia National Forest, over 1,000 miles of nature trails await the outdoor enthusiast. The 2,207 square mile forest is a haven for bird watchers, hikers, off-roaders, and equestrians, offering plenty to see and do. The Pacific Rest National Scenic Trail passes through the Sequoia National Forest for 78 miles and, combined with Summit trail, Cannell Meadow trail, and Jackass Creek trail, weave naturists though the unique and magnificent sequoia ecosystem.

For those who love a bit of excitement, the Kern River is a very popular destination for whitewater rafting. Plenty of tours are available to help you navigate the rapids of the Lower Kern and Upper Kern. The Lower Kern, most southern of all Sierra rivers, offers intermediate and advanced rapids in the class III-IV range as you careen down an aquatic canyon. The Upper Kern offers the same class of rapids with big, white waves and heart-stopping drops. Make reservations in advance.

The fun doesn’t stop when the temperatures drop – in fact, some would say they’re just beginning. Winter sports abound in this California region, with snowshoeing, cross country skiing, downhill skiing, and snowboarding topping the list. Head to Mountain & River Adventures for snow shoe and cross country ski rental or the Alta Sierra at Shirley Meadows Ski resort for downhill skiing, snowboarding terrain park, and a thrilling tube park. Lessons are available at both locations, and the very fair prices will make you almost as happy as the sports to follow.

Lake Isabella is a wonderful vacation destination for all four seasons, offering excellent water activities in summer and exciting snowy ones in winter. Depending on your preferences, plan your trip according to season or, if you can’t quite decide, just make plans for a bit of Lake Isabella during every season!

Things to do at Lake Isabella

  • Vacation Rentals
  • Fishing
  • Boating
  • Sailing
  • Swimming
  • Canoeing
  • Kayaking
  • Whitewater Rafting
  • Water Skiing
  • Wakeboarding
  • Tubing
  • Hiking
  • Downhill Skiing
  • Snowboarding
  • Cross-Country Skiing
  • Horseback Riding
  • Birding
  • National Forest

Fish species found at Lake Isabella

  • Bass
  • Black Bass
  • Bluegill
  • Carp
  • Crappie
  • Largemouth Bass
  • Perch
  • Rainbow Trout
  • Smallmouth Bass
  • Striped Bass
  • Sunfish
  • Trout
  • White Bass
  • Yellow Bass

Lake Isabella Photo Gallery

Lake Isabella Statistics & Helpful Links

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Lake Type: Artificial Reservoir, Dammed

Water Level Control: U.S. Army Corps of Engineers

Surface Area: 11,200 acres

Shoreline Length: 38 miles

Normal Elevation (Full Pond): 2,585 feet

Average Depth: 60 feet

Maximum Depth: 185 feet

Water Volume: 560,000 acre-feet

Completion Year: 1953

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Trophic State | LakeLubbers

Trophic State measures the level of algae and nutrients in a lake.

An oligotrophic lake is very clear (blue in color) and does not support much plant or fish life. A hyper-oligotrophic lake is the clearest of all lakes, and is nearly devoid of plants and fish.

A mesotrophic lake is slightly green and supports a moderate degree of plant and fish life. A lake's most desired trophic state is generally this mid-point - the mesotrophic state.

A eutrophic lake is somewhat murky and supports a large amount of plant and fish life. A hypereutrophic lake is clouded with algae, plant life, and fish life. A eutrophic or hyper-eutrophic lake can be difficult to navigate by boat - and is often an unpleasant place to swim.

The use of phosphorus-rich and nitrogen-rich fertilizer on lawns and golf courses surrounding a lake can cause it to become eutrophic or hypereutrophic.


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Catchment or Drainage Area | LakeLubbers

This is the surrounding area that drains into a lake, including land, rivers and their tributaries. This is also known as the lake's "catchment basin".

Small lakes at the highest peaks of mountains have small drainage areas. The world's oceans have the largest drainage areas.


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Lake-Area Population | LakeLubbers

This is the estimated number of people who live in a house with a view of a lake, plus those who self-describe the lake as their home, for example: "I live at Smith Mountain Lake."


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Water Residence Time | LakeLubbers

This is the estimated time that it takes for an amount of water equal to the entire volume of a lake to flow out of - or evaporate from - the lake.

Residence Time can be as short as a few days for fast-flowing small lakes, and can exceed 100 years for slow-flowing large lakes.


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Completion Year | LakeLubbers

This is the year that a reservoir was first filled to the reservoir's normal elevation - or the year that a natural lake was first dammed. A large reservoir can take more than a year to fill after its dam is first closed.

The Grand Anicut in southern India is generally considered the world's oldest dam that still operates. Grand Anicut was constructed in the second century BC. It now impounds an irrigation network that includes roughly one million acres.

You can find many of the the world's newest reservoirs on LakeLubbers. Many of the world's oldest reservoirs appear on the last page of that list.


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Water Volume | LakeLubbers

This is the estimated volume of water that a lake contains -- measured at the lake's normal elevation. By this measure, the world's largest freshwater lake is Siberia's Lake Baikal.

You can find many of the the world's largest lakes (by water volume) on LakeLubbers.

Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet.

1 acre-foot is equal to 325,851 US gallons. Siberia's Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater - nearly 1 million gallons for every living person on earth.

The other - and more widely used - measure of a lake's size is the lake's surface acreage. By that measure, the world's largest freshwater lake is North America's Lake Superior.


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Maximum Depth | LakeLubbers

This is the estimated greatest depth of the water in a lake -- measured at the lake's normal elevation. The world's deepest lake is Siberia's Lake Baikal; that lake's maximum depth is estimated at 5,314 feet.

You can find many of the the world's deepest lakes on LakeLubbers. If you select the last page of that list, you will find the (maximum depth of) the shallowest lakes in our database.


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Average Depth | LakeLubbers

This is the estimated average depth of the water in a lake -- measured at the lake's normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake's average depth can be calculated:

Water volume ÷ Surface Area = Average Depth

Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth


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Maximum Elevation | LakeLubbers

This is a lake's highest water level, measured by the lake's surface distance above sea level, that can occur during flooding. A lake's highest possible maximum elevation is usually the top of the lake's dam or spillway.

At lakes that include residential development, government regulations usually forbid the construction of homes below a lake's maximum elevation.


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Minimum Elevation | LakeLubbers

This is a lake's lowest water level, measured by the lake's surface distance above sea level, that can be reasonably expected to occur. Low lake levels can occur due to deliberate seasonal draw downs for irrigation or impending snow melt, reduced water inflows, drought and evaporation, residential or commercial water demands, and hydropower generation.

Some lakes' minimum and maximum elevations are virtually the same. Lakes that generate hydropower may vary by several feet - according to power demand. Lakes whose primary purpose is to prevent flooding can seasonally vary by 100 feet or more.

When some lakes reach their minimum elevation, their boat ramps may not be long enough to permit boat access - and boats docked on shallow parts of the lake may end up on dry ground. In those cases, kayakers and shore-based anglers may be among the few happy recreational users of the lake.


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Normal Elevation | LakeLubbers

This is a lake's normal water level, measured by the lake's surface distance above sea level. For a reservoir, this water level is also known as "full pond" or "full pool".

You can find many of the world's highest-elevated lakes on LakeLubbers. Lakes with the lowest elevations (known by LakeLubbers) are shown on the final page of that list.


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Shoreline Length | LakeLubbers

This is the length of the exterior shoreline around a lake - measured at the lake's normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal.

A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.

When known, the shoreline miles that we report in our statistics include only the lake's exterior shoreline, and exclude the shorelines of islands located within a lake's boundaries. In lakes with many islands, those islands' combined shorelines may exceed a lake's exterior shoreline.

You can find many of the world's longest-shoreline lakes on Lakelubbers.


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Surface Area | LakeLubbers

This is the area (acreage, square kilometers, etc.) of the top surface area of a lake - measured at a lake's normal elevation. The surface area can be considerably smaller or larger when lake levels are lower or higher than normal. North America's Lake Superior is the world's largest freshwater lake by this measure.

The other measure of a lake's size is the lake's water volume. By that measure, the world's largest freshwater lake is Lake Baikal in Siberia.

You can find many of the world's largest lakes (acres) on Lakelubbers. There is no widely-accepted minimum surface area that defines a lake. What Lakelubbers describes as a lake, you might call a pond. The smallest lake that Lakelubbers currently includes is Hawaii's 2-acre Lake Waiau.


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Water Level Control | LakeLubbers

This is the organization that controls water releases or outflows from the lake or reservoir. In the USA, this is often the US Army Corps of Engineers, a power company, a municipal water system, an irrigation district, or a paper manufacturing company. In the case of private or gated lakes, a homeowners' association may be the lake's controlling authority.

Many lakes cross borders, including North America's Great Lakes. The control of such lakes and their coveted freshwater may be amicably shared - or hotly disputed.

"Water wars" continue at many lakes as growing populations and crop irrigation needs compete for the freshwater that lakes contain.


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Lake Type | LakeLubbers

There are 3 basic types of lakes that are currently included on LakeLubbers. 2 types may be dammed or not dammed, producing 5 classifications.

- A Reservoir is a man-made freshwater lake that is usually created by damming rivers.

- A Natural Freshwater Lake occurs naturally - often by glacial activity - and has a salinity of less than 30 parts per thousand. It may be dammed to produce electricity or for other reasons.

- A Natural Saltwater Lake occurs naturally and has a salinity of more than 30 parts per thousand (ppt). It may be dammed.

"Brackish" water may be categorized as freshwater or saltwater, depending on its salt content (salinity). Oligohaline water has less than 15 ppt of salt. Mesohaline water has 15-29 ppt. Polyhaline has 30-335 ppt.


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