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How was Big Bear Lake created?

In 1884, an arch dam made of rock was constructed over the marshy meadow lands in the center of the Big Bear Valley, forming a man-made reservoir for irrigating citrus crops in Redlands. This original dam held back some 25,000 acre feet of water.



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It was formed by fault subsidence that continues today, slowly deepening the lake along the eastern side. In 1911 the majority of the flow of the Bear River was diverted into Bear Lake via Mud Lake and a canal from Stewart Dam, ending 11,000 years of separation between the lake and that river system.

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Big Bear Lake is a reservoir in the western United States, located in the San Bernardino Mountains in San Bernardino County, California. It is a snow and rain-fed lake, having no other means of tributaries or mechanical replenishment.



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Bear Lake contains abundant suspended microscopic particles of white-colored calcium carbonate (lime) that reflect the water's natural blue color back to the surface, giving the lake its intense turquoise-blue color.

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For the latest quarter assessed by the U.S. EPA (January 2021 - March 2021), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

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The lake is home to alligators and crocodiles, and while fishing is allowed, getting a permit is the least of your worries.

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The lake is still more than 14.5 feet below its capacity and hasn't been full since 2011, according to the water district.

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Blue-Green Algae is in fact not an algae at all, it is a bacteria (cyanobacteria). This type of bacteria is found in many lakes, ponds, and reservoirs across the world. They are usually present in low numbers, but can become very abundant in warm, shallow, undisturbed surface water that receives a lot of sunlight.

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Big Bear Lake has been listed as a “mercury impaired” reservoir by state health and water authorities. Mercury is absorbed by bacteria and transformed into an organic form known as methylmercury.

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A gradual slope to the lake bottom provides an enormous swimming area in the summer. In the winter, those with buckets and nets can ice fish for the Bonneville cisco, a fish found nowhere else on earth.

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Swimming Rules From the Big Bear Municipal Water District: In the summer months, swimming is permitted in Big Bear Lake at your own risk! There are NO lifeguards on duty and swimmers must stay within 50 feet of the shore or within 20 feet of a private dock.

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At 1,943 feet (592 meters), Crater Lake is the deepest lake in the United States and one of the deepest in the world. The depths were first explored thoroughly in 1886 by a party from the U.S. Geological Survey.

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Big Bear Lake weather offers summers that are warm and mostly clear skies and winters that are very cold, dry, and partly cloudy skies. Over the course of the year, the temperature typically varies from 22°F to 81°F and is rarely below 14°F or above 88°F.

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Living in Big Bear Lake offers residents a sparse suburban feel and most residents own their homes. In Big Bear Lake there are a lot of bars, restaurants, and coffee shops. Many retirees live in Big Bear Lake and residents tend to lean conservative. The public schools in Big Bear Lake are above average.

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Big Bear Lake was a mecca for gold mining before it was a popular four-season resort. History records show that in 1860, a bear hunter named William Holcomb discovered gold in the area now called Holcomb Valley. After tracking a bear's blood trail to a creek, he found gleaming flakes of gold in the water.

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What is Big Bear Lake Most Famous For? Big Bear Lake is Southern California's premier 4-season destination. The city offers majestic natural beauty, abundant outdoor recreation, and a laidback vibe. The region combines epic mountain scenery with 22 miles of shoreline.

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The City of Big Bear Lake forged international friendships back in 1984, under then-Mayor John Eminger, aligning with Rosarito Beach, Mexico as our official Friendship City and Abtenau, Austria as our Sister City.

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