The official Diamond Valley Lake web site

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Diamond Valley Lake Boating Guide

Metropolitan's Diamond Valley Lake and Lake Skinner are a delicate balance between fun and function. While they each provide Southern California residents exciting boating and fishing opportunities, they are, first and foremost, vital drinking water reservoirs. The water stored in the two reservoirs is enough to serve almost a half million Southern California families for a year. That's why Metropolitan keeps a close eye on any activity on the lakes and in their respective watersheds.

Recognizing the lakes' recreational value as well as the need to protect water quality and guard the health and safety of the public, Metropolitan's board of directors adopted boating rules for both Diamond Valley Lake and Lake Skinner, which will become effective once Diamond Valley Lake opens. A summary of the rules follows.

We hope you enjoy your visit while you help us protect a valuable water supply for Southern California.

While Diamond Valley is a large lake, our east marina parking lot is limited.

We have 250 parking spaces for vehicles with boats, another 50 spaces set aside for people who plan to rent boats and another 50 for people who plan to fish from the shoreline near the Marina.

The concessionaire has a limited amount of food for sale; it is advisable to bring your picnic baskets with you.

Permanent restrooms are not available at the marina and are not allowed on boats. There are portable toilets in the marina and along the shoreline fishing area and floating toilet facilities on the lake.

California Department of Fish and Game Regulations

A California Department of Fish and Game Fishing License is required for all anglers 16 years and older.  Limits on the size and number of fish each person can catch at Diamond Valley Lake are set by the California Department of Fish and Game.  Click here for a complete list of regulations and bag limits.  You are responsible for knowing and complying with all Fish and Game regulations.

  1. NO swimming, personal watercraft, water skiing, float tubes or body contact of any kind is allowed.
  2. No smoking except in designated areas.
  3. Alcohol is not permitted at the marina or anywhere on the lake, including the shoreline.
  4. Boats powered by humans, sail or electric motors are allowed on lakes.
  5. Boats with four-stroke or direct fuel injection two-stroke combustion engines are allowed, as are two-stroke engines that comply with the California Air Resources Control Board 2001 or later model year spark ignition marine engine standard (or U.S. Environmental Protection Agency 2006 equivalent). This rule will be strictly enforced and any questions regarding your engine compliance should be resolved prior to entrance into the park.
  6. Traditional carbureted two-stroke engines are not allowed.
  7. Only gasoline free of the additive MTBE is allowed. Boats containing MTBE fuel will be turned away. The California Air Resources Board has reported that MTBE was removed from all gasoline refined for sale in California in Nov. 2003. Therefore, all gasoline must be purchased in California and proof of purchase will be required for boats with out-of-state registration. Refueling is prohibited except in designated areas.
  8. Boats equipped with sink drains or flush toilets are barred unless the drains and toilets are sealed, inoperable, or are designed so that no waste can be discharged into the lake.
  9. Boats must be at least 12 feet long, 42 inches wide, and have 12 inches of freeboard at idle speed. Multi-hulled boats must have solid and fixed decking. Engine noise must not exceed 75 decibels at a distance of 50 feet with the engine running at 80 percent of redline RPM. All engines must be unmodified, standard equipment.
  10. Kayaks and canoes, at least 10 feet long, non-bailing and with seating for all passengers inside the boat, are allowed. No sit-on-top kayaks are allowed.
  11. All boats must carry approved life jackets for each person aboard. Type B fire extinguishers are required on boats where a fire hazard could be expected from the motors or the fuel system.
  12. Boat launching and landing is allowed only at designated docks and ramps.
  13. Generally, the lakes open at sunrise and close at sunset. The hours of operation vary seasonally and are posted at the site. All boats shall be removed from the lake one hour before the posted closing time. There is no boat storage.
  14. Metropolitan can close the lake to boating at any time and the number of boats allowed on the lake will be determined by lake elevation, public safety considerations and water quality concerns.
  15. The speed limit for all watercraft on Diamond Valley Lake is 25 MPH. The maximum speed for boats within 200 feet of the shore, dams, other operational structures and in marina areas is 5 MPH.
  16. Pets are not allowed within the recreation area or on boats.

We hope you enjoy your outdoor experience at Diamond Valley Lake and Lake Skinner while the Metropolitan Water District of Southern California continues to protect water at its source so you can trust it at the tap.