Top 10 Largest Lakes in California (2025)

California is home to some of the most remarkable and diverse water bodies in the United States. From massive man-made reservoirs to ancient natural lakes, these bodies of water play vital roles in the state’s ecosystem, economy, and recreation. The largest lakes in California not only provide breathtaking views but also support wildlife, water supply, and tourism. Their size, history, and significance make them must-see landmarks for anyone interested in nature, outdoor activities, or simply exploring California’s natural beauty.

Top 10 Largest Lakes in California

1. Salton Sea – Imperial and Riverside Counties

The Salton Sea is the largest lake in California, located in Imperial and Riverside Counties. This massive inland saline lake covers over 343 square miles, making it the biggest by surface area. Its size resulted from an accidental Colorado River diversion in the early 1900s, yet it remains vital for migratory birds. Its historical importance, unique ecosystem, and vast expanse firmly establish it as one of the largest lakes in California and the number one in size.

2. Lake Tahoe – Sierra Nevada (California–Nevada Border)

Lake Tahoe ranks among the largest lakes in California, straddling the California–Nevada border in the Sierra Nevada. Known for its crystal-clear waters and alpine beauty, it spans about 191 square miles. As the largest alpine lake in North America, Tahoe attracts millions of visitors for recreation, skiing, and water activities. Its depth and surface area make it a standout, while its year-round tourism value secures its place among the top 10 largest lakes in California.

3. Clear Lake – Lake County

Clear Lake, located entirely within Lake County, is the largest natural freshwater lake fully within California’s borders, covering about 68 square miles. Its volcanic origin and surrounding vineyards make it a popular destination for boating, fishing, and wine tourism. With over 2.5 million years of geological history, it is also considered one of the oldest lakes in North America. Its expansive waters and cultural importance ensure it remains a top contender among the largest lakes in California.

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4. Goose Lake – Modoc County

Goose Lake lies in northeastern California’s Modoc County, stretching into Oregon. Covering about 147 square miles during wet years, it is an intermittent alkaline lake, shrinking significantly in drought. Despite this variability, its sheer surface area during peak times qualifies it as one of the largest lakes in California. The surrounding wetlands provide important habitats for migratory birds, making it ecologically significant. Its seasonal size and unique location across state borders solidify its spot in California’s largest lakes.

5. Mono Lake – Mono County

Mono Lake, in Mono County, covers approximately 65 square miles, making it one of the largest lakes in California. This ancient saline lake, over one million years old, is famous for its tufa towers and unique ecosystem that supports trillions of brine shrimp and millions of migratory birds. Its otherworldly landscape draws photographers and tourists worldwide. The lake’s size, age, and natural significance not only rank it among the largest lakes in California but also among its most fascinating.

6. Honey Lake – Lassen County

Honey Lake, located in Lassen County, is a seasonal endorheic lake that covers about 77 square miles during wet seasons. Though it often shrinks or dries up, its peak expanse places it among the largest lakes in California. It is surrounded by wildlife areas that provide refuge for migratory birds, deer, and other species. Honey Lake’s size variability adds to its uniqueness, and its vast seasonal surface area ensures its inclusion in the top 10 largest lakes in California.

7. Eagle Lake – Lassen County

Eagle Lake, also in Lassen County, is California’s second-largest natural freshwater lake, covering 38 square miles. Its high-elevation setting and scenic beauty make it popular for fishing, especially for its unique strain of Eagle Lake trout. The lake’s consistent size and recreational importance secure its ranking among the largest lakes in California. Surrounded by forests and mountains, Eagle Lake offers both ecological and tourism value, combining size, natural beauty, and recreational use to remain a top-tier California lake.

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8. Shasta Lake – Shasta County

Shasta Lake, located in Shasta County, is the largest man-made reservoir in California, covering up to 46.8 square miles when full. Formed by the Shasta Dam on the Sacramento River, it plays a vital role in the state’s water supply and hydroelectric generation. Its vast shoreline and recreational offerings like boating and fishing make it highly popular. Shasta Lake’s engineering importance, water capacity, and large surface area secure its ranking among the largest lakes in California and a key resource.

9. Tulare Lake – Kings County (Historic)

Tulare Lake, once located in Kings County, historically covered nearly 690 square miles, making it the largest freshwater lake west of the Mississippi before agricultural diversion drained it. Though mostly dry today, heavy rains occasionally revive portions of it, showcasing its former glory. Tulare Lake’s historical dominance, ecological role, and massive scale cement its legacy among the largest lakes in California. Its story reflects California’s changing landscape and the impact of human development on natural water systems.

10. Lake Oroville – Butte County

Lake Oroville, located in Butte County, is a major man-made reservoir created by the Oroville Dam on the Feather River. It covers about 25 square miles and serves as a key component of California’s State Water Project. Beyond water storage, it offers boating, camping, and fishing opportunities. Its size, combined with its role in supplying water to millions, ensures its inclusion among the largest lakes in California. Lake Oroville stands out for blending vast capacity with vital functionality.

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Reasons Why They Are The Largest Lakes in California

  • They have vast surface areas, some spanning hundreds of square miles.
  • Several lakes, such as Lake Tahoe and Clear Lake, are naturally formed and have remained large for thousands of years.
  • Reservoirs like Shasta Lake and Lake Oroville were designed to hold immense volumes of water.
  • Some lakes, including Mono Lake and Salton Sea, are sustained by unique geological conditions.
  • They provide critical water storage for California’s agricultural and urban needs.
  • Their massive size supports diverse ecosystems and wildlife habitats.
  • Historical lakes like Tulare Lake once dominated the landscape as the largest freshwater sources.
  • Their geological and hydrological features make them stand out among all lakes in the western United States.

Reasons Why You Should Visit These Largest Lakes in California

  • They offer stunning natural beauty and breathtaking landscapes.
  • Visitors can enjoy outdoor activities like boating, fishing, and swimming.
  • Many lakes support hiking, camping, and wildlife viewing opportunities.
  • Lakes like Tahoe and Shasta provide year-round attractions, from summer water sports to winter skiing nearby.
  • They showcase California’s rich geological and ecological diversity.
  • Lakeside communities offer cultural events, dining, and local experiences.
  • Exploring these lakes allows travelers to connect with both nature and history in meaningful ways.

Conclusion

The largest lakes in California are more than just bodies of water; they are vital resources and treasured natural wonders. They represent a balance of history, utility, and beauty that continues to attract millions of people each year. Whether shaped by nature or human engineering, these lakes provide water, recreation, and cultural value. Visiting them is an opportunity to experience California’s landscapes in their grandest form. From Salton Sea to Lake Tahoe and beyond, these lakes stand as true giants of the state’s natural heritage.