Boat Inspections at Diamond Valley Lake

To help protect our waters from invasive species, please observe the following Launch Requirements for Diamond Valley Lake:

All boats MUST be
CLEAN, DRAINED, & DRY
Prior to launch at Diamond Valley Lake.

******** ZERO TOLERANCE ********

All watercraft operators will be interviewed prior to launching at Diamond Valley Lake to insure the following requirements have been followed:

All vessels must be CLEAN & DRY prior to being allowed to launch at Diamond Valley Lake.

When leaving any waterbody you must:

• Inspect the boat, trailer and boating equipment and remove any plants and animals that are visible.
• Drain water from the motor, livewell, bilge and transom wells while on land before leaving any waterbody. The veligers are microscopic and probably cannot be seen without magnification; therefore, draining all standing water  and drying those areas is essential.
• Empty your bait bucket in disposal container before leaving the waterbody. Never release live bait into a waterbody, or release aquatic animals from one waterbody into another.
• Wash and dry your watercraft, tackle, downriggers, trailer, and other  boating equipment to kill harmful species that were not visible at the  boat launch.

ALL watercraft that have been in Quagga Mussel infested water for less than 24 hours must:

• All vessels used in a contaminated waterbody for less than 24 hours must remain out of any waterbody and dry for 7 consecutive days prior to launching at Diamond Valley Lake.
• A list of contaminated lakes can be found by visiting http://www.dfg.ca.gov/invasives/quaggamussel/
• Completely drain all water from the motor and standing water in the bilge, livewells, bait tanks, and internal ballast tanks in the watercraft. Draining the standing water is essential before leaving the infested waterbody.
• Rinse the bilge, livewells, and bait tanks with hot (140 F) fresh water.
• Flush the boat engine (especially stern drive boats) with hot (140 F) fresh water to kill veligers inside the engine cooling system. Check with engine manufacturers for warranty limitations.

ALL watercraft that have been in Quagga Mussel infested water for MORE than 24 hours must:

• All vessels used in a contaminated waterbody for more than 24 hours must remain out of any waterbody and dry for 12 consecutive days prior to launching at Diamond Valley Lake.
• Completely wash watercraft and equipment with a pressurized power spryer using hot (140 F) tap water. Contact with water at this temperature will kill Quagga mussel juveniles and larvae. Completely spray the entire exterior of the watercraft and trailer. Perform the wash slowly and carefully. Spray all small nooks and crannies where mussel larvae may be lodged.
• Do not use high pressure spray in sensitive areas such as the gimbal boot area on stern drive boats.
• Flush the boat engine (especially stern drive boats) with hot (140 F) water to kill mussels and veligers attached inside the engine cooling system. Check with engine manufacturers for warranty limitations.

Please click HERE for a printable copy of the above information.

Please click HERE for the latest information from California Fish & Game.

Please click HERE for the latest information from the Metropolitan Water District of Southern California.

Please click HERE for the latest information on Quagga Mussels and Zebra Mussels across the United States.

Who must be inspected?
All boats-power boats, fishing boats, sailboats, rowboats, kayaks, canoes and certain types of catamarans-and respective engines must pass inspection and be registered to be allowed on the lake.

For more information, please visit the boat requirements page on the Diamond Valley Lake website.