Celebrating Sacramento-San Joaquin Delta Week 2025
September 15, 2025
WEST SACRAMENTO – Sacramento-San Joaquin Delta Week, taking place this year from September 21 through 27, is a celebration of the Delta’s importance to all Californians and the people, flora, and fauna that call the region home.
Delta Week was made official by Sen. Bill Dodd’s Senate Concurrent Resolution 119 in 2022 and is celebrated annually during the last full week of September. Those who work and live in the Delta have long known that it’s a special and vital place.
Located inland from the San Francisco Bay, the Delta is formed by the union of the Sacramento and San Joaquin rivers. Those rivers mingle with smaller tributaries and tidal flows from the ocean to form the highly biodiverse and productive San Francisco Bay-Delta Estuary. The Delta region spans parts of Contra Costa, Sacramento, San Joaquin, Solano, and Yolo counties and is home to more than half a million people.
The Delta is important for many reasons. Some include:
- Provides a portion of the water used by about 27 million Californians.
- Supports one of the largest estuaries on the West Coast of North and South America.
- Creates habitat for more than 750 plant and animal species, including 55 fish species, some of which are found nowhere else in the world!
- Offers migratory birds an important stop along the Pacific Flyway.
- Contains more than 500,000 acres of agricultural land that provides food for worldwide distribution.
- It’s a world-class recreational destination, attracting about 12 million visitors per year.
- Serves as California’s first National Heritage Area, designated in 2019.
Our Work
Our mission is to lead efforts to preserve, protect, enhance, and restore the natural resources, economy, and agriculture of the Delta and Suisun Marsh through both internal programs and grant-funded projects. To achieve this mission, we collaborate with local communities, tribes, interested groups, fellow science experts, and state and federal agencies to seek creative opportunities to address challenges and progress these efforts within the Conservancy’s jurisdiction.
Visit our project update page and interactive project StoryMap to get a closer look at our work.
How to Get Involved
There are plenty of ways to celebrate Delta Week and the Delta in general.
- Use our Delta Week social toolkit, which has social media graphics, virtual meeting backgrounds, and more.
- Participate in cleanups in the Delta as part of Coastal Cleanup Day on September 20. We are co-sponsoring a cleanup at Sherman Island, and there are other Delta-area cleanups in need of volunteers.
- More information: Delta Waterway Cleanups.
- Sign up for the Delta Protection Commission’s Delta Happenings newsletter to learn about upcoming meetings and community events.
- More upcoming meetings and events:
“As we celebrate Delta Week, we recognize the rich history, diverse wildlife, and agricultural importance of this vital region. Delta Week is a time to reflect on the unique beauty and resilience of this landscape and to honor the communities that call it home,” says Delta Conservancy Executive Officer Campbell Ingram. “The Delta provides a playground to about 12 million visitors per year, water to 27 million Californians, and contains hundreds of thousands of acres of agricultural land providing food for worldwide distribution. The Delta faces challenges – from flood risk to climate impacts and loss of habitat – but ongoing collaborative projects in the Delta show us ways forward that benefit both people and wildlife. Here at the Delta Conservancy, we are committed to safeguarding and restoring crucial ecosystems and advancing the economic well-being of Delta residents.”
