Southern California's Most Ambitious Lake
Why Rent On Diamond Valley Lake
Diamond Valley Lake near Hemet is a 4,500-acre off-stream reservoir completed in 2003 as part of Southern California’s water security infrastructure, and it has since become one of the region’s finest recreational destinations. The lake sits in golden hills east of the Inland Empire, with wide, clear water that supports excellent fishing, electric boating, and some of the most scenic lakeshore trails in Southern California. The Western Science Center adjacent to the lake, featuring Ice Age fossils unearthed during construction, makes this a destination with an intellectual dimension that most lakes cannot offer.
A Rental Near Hemet Makes It a Real Trip
Vacation rentals and lakeside accommodations in the Hemet and San Jacinto area give families a comfortable home base for exploring Diamond Valley Lake and the surrounding San Jacinto Valley. A full kitchen, multiple bedrooms, and outdoor space make a rental here far more practical for a multi-night stay than the motel options closer to the freeway. Families with young children especially benefit from the space and flexibility that a private rental provides after active days at the lake.
Fish for Trophy Bass and Trout, Hike the Loop
Diamond Valley is a trophy fishery, with largemouth bass, rainbow trout, and blue catfish all growing to impressive sizes in the clear, well-managed water. The Diamond Valley Marina provides boat rentals and a well-stocked tackle shop for anglers who want to fish the open water. The Lakeview Trail, a 21.8-mile loop encircling the lake, gives hikers and cyclists panoramic water views throughout its length, making it one of the finest lake trail experiences in the Inland Empire.
Ice Age Fossils at the Western Science Center
The Western Science Center adjacent to the lake displays mammoth, mastodon, and other Ice Age fossils found during the lake’s construction, an extraordinary collection that gives younger visitors a genuine wow moment. The exhibits connect the deep geological history of the San Jacinto Valley to the modern marvel of the lake itself, and the combination of outdoor recreation and indoor learning makes Diamond Valley an unusually well-rounded family destination.
Steer ‘n Stein and the San Jacinto Valley
Steer ‘n Stein in Hemet is a local steakhouse with generous portions and honest prices that fuel many a post-lake dinner in the area. The surrounding San Jacinto Valley has its own quiet agricultural charm, with citrus orchards and ranches that give the landscape a texture quite different from the busier parts of Southern California. Diamond Valley Lake is one of the region’s best outdoor secrets, and it rewards families who take the time to find it properly.
- Surface area (mi)
- 11.56
- Max depth (ft)
- 259.19
- Elevation (ft)
- 1522.31
- Shoreline length (mi)
- 24.85
Popular activities
- Boating
- Waterskiing
- Fishing
- Freshwater Fishing
- Jet Skiing
- Kayaking
- Canoeing
- Ice Skating
- Cross-country Skiing
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Marinas on Diamond Valley Lake
Nearby lakes
Frequently Asked Questions
Ready to dive into what Diamond Valley Lake has to offer? Let’s tackle some of the burning questions you might have as you plan your visit!
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No, swimming is not allowed in Diamond Valley Lake. The lake is a drinking water reservoir, and body contact with the water is prohibited to protect water quality and the environment.
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Diamond Valley Lake is a popular destination because it is one of the largest man-made reservoirs in Southern California, with a capacity of 800,000 acre feet and over 4,500 surface acres. It offers fishing, boating, and a tranquil atmosphere without personal watercraft. The lake also features nearby attractions like the Western Science Center and the Diamond Valley Lake Visitors Center.
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Boats on Diamond Valley Lake must be at least 12 feet long, 42 inches wide, and have 12 inches of freeboard at idle speed. Multi-hulled boats need solid and fixed decking. Motors must not pose a fire hazard, requiring Type B fire extinguishers if necessary. Personal watercraft and inflatables are not allowed.
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There is no public beach at Diamond Valley Lake. The lake, located in Hemet, California, is primarily known for its boating and fishing facilities, and it does not offer a public beach area. It is one of the largest man-made reservoirs in Southern California.
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Diamond Valley Lake is near the town of Hemet in Riverside County, California. Hemet is the closest urban area, offering various amenities and services. The lake is also accessible from other nearby cities like Banning and Beaumont.
