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July 21
1952 - 7.5-magnitude Kern County earthquake devastates Tehachapi; damage spread from San Diego to Las Vegas [story]


Now that the weather has turned the public’s fancy to boating, inspectors at Castaic, Pyramid and Piru Lake are busy making sure that boaters are being safe – no boating under the influence, or “BUI” – and that their boats are free of quagga and zebra mussels, invasive species that are wreaking havoc on the state’s waterways.

This weekend, from Friday through Sunday, deputies from the Los Angeles County Sheriff’s Department’s Parks Bureau will participate in “Operation Dry Water.” This is a nationally coordinated weekend of boating under the influence (BUI) detection and enforcement aimed at reducing the number of alcohol and drug related accidents and fatalities.

The goal is to foster a stronger and more visible deterrent to alcohol and drug use on the water in an effort to educate boaters about boating under the influence.

The Sheriff’s Department will increase its presence at both Castaic Lake and Pyramid Lake during Operation Dry Water by conducting traffic stops and BUI sobriety check points.

Aside from emphasizing safe boating for all, deputies and lake personnel will be inspecting boats and other watercraft to ensure that all craft are dry when they go into the water and not harboring unwanted visitors.

No boats, jet skis, or any type of watercraft will be allowed on the lake without a daily successful quagga mussel inspection. These inspections are necessary to help avoid the spread of the quagga and zebra mussels.

The State of California requires that all watercraft pass a pre-entry inspection point verifying that the craft is completely dry inside and out, (including lower outboard units).  Any small amount of water in or on a vessel will constitute a fail of the state-required inspection and the vessel will not be allowed on the lake. Because of the seriousness of this problem, there will be no exceptions.

Information from the State Fish and Game website:

“Quagga mussels were discovered in Lake Mead in Nevada on Jan. 6, 2007, and later throughout Lake Mead’s lower basin. It was the first discovery of either of these mussels west of the Continental Divide. Subsequent surveys found smaller numbers of Quagga mussels in Lakes Mohave and Havasu in the Colorado River, and in the Colorado River Aqueduct System which serves Southern California. Surveys in August found Quagga in Lake Dixon and San Vicente Reservoir in San Diego County. All reservoirs, lakes and watersheds receiving raw Colorado River water have been exposed to Quagga mussels. The first confirmed find of Zebra mussels in California occurred at San Justo Reservoir Jan. 10, 2008.

Quagga mussels on a boat propeller

Zebra mussels arrived in North America from Europe in the 1980s followed shortly thereafter by their close relative the Quagga mussel. As prodigious water filterers, they remove substantial amounts of phytoplankton, zooplankton and suspended particulate from the water, which reduces the food sources for zooplankton and small fish, altering the food web. With the filtering out of suspended particulates and phytoplankton, water clarity increases allowing sunlight to penetrate the water deeper triggering increased vegetation growth that can affect oxygen levels resulting in fish die offs.

Quagga/Zebra mussels accumulate organic pollutants within their tissues to levels more than 300,000 times greater than typical concentrations in the environment. The mussels’ wastes significantly lower the oxygen levels, lowering the pH to an acidic level and generating toxic byproducts. The mussels have also been associated with outbreaks of botulism poisoning in wild birds.

Quagga mussels on a flip flop

Zebra mussels heavily colonize hard substrates while Quaggas colonize both hard and soft substrates. It appears as though Quaggas colonize deeper than Zebra mussels, infesting a wider range of habitats. In locations where both mussels exist, the Quagga mussel appears to compete with the Zebra mussel, eventually replacing it. Quagga/Zebra mussels clog water intake structures, such as pipelines and screens, reducing pumping capabilities for power and water treatment facilities. Recreation-based industries and activities are also affected by the mussels which take up residence on docks, breakwalls, buoys, boats and beaches. For boaters, Quagga/Zebra mussels increase drag, clog engines causing overheating and can affect steerage.”

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LOS ANGELES COUNTY HEADLINES
Friday, Jul 19, 2019
Los Angeles County has agreed to its largest-ever largest payout -- $53 million -- to settle a 2010 class-action lawsuit over strip search practices of prisoners at the Sheriff’s Department’s Century Regional Detention Facility in Lynwood.
Friday, Jul 19, 2019
The Los Angeles County Department of Public Health is investigating a confirmed case of measles in a county resident that is linked to four cases reported earlier this month.
Friday, Jul 19, 2019
Speaking before the Los Angeles County Metropolitan Transportation Authority Planning and Programming Committee on July 17, Santa Clarita Mayor Marsha McLean advocated for the Antelope Valley Line Study to be presented to the full Metro Board.
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Thursday, Jul 18, 2019
The Los Angeles County Community Development Foundation (LACDF) awarded $28,000 in Housing Authority Resident (HAR) Scholarships to 28 public housing and Section 8 participants attending a four-year university, community college, or vocational program.

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