California's newest state park, located 80 miles east of San Francisco, has an opening date.After a decade of planning and $40 million in funding, Dos Rios State Park in the San Joaquin Valley will open to the public on June 12, Gov. Gavin Newsom and California State Parks announced Monday. The 1,600-acre property, nestled between the Tuolumne and San Joaquin rivers, around eight miles from Modesto, is the largest public-private floodplain restoration project in the state. It's also the first state park to open in California since Onyx Ranch State Vehicular Recreation Area in 2014.Newsom spoke from the Dos Rios site on Monday afternoon, telling an enthusiastic crowd that Dos Rios is set to be 281st state park in the state."This community has been underserved as it relates to parks," Newsom said. "The San Joaquin Valley has the lowest per capita open space and parks compared to any other region in the state. That's why this is so profound." The governor then pointed to the California seal in front of him that he had "taken for granted," and spoke emotionally about the natural resources in the Golden State."You see that sun rise over the flag, and below it biodiversity is represented," Newsom said tapping the grizzly bear on the flag. "And those poppies underneath. Everything is an expression of the abundance that is California. It shouldn't be taken for granted."The name of the park, currently referred to as Dos Rios, may yet change, California State Parks said in a statement.Alongside providing scenic views of the Central Valley landscape as it looked more than 150 years ago, the restoration of the floodplains has also renewed habitats for endangered animals to thrive, such as the sandhill crane, the riparian brush rabbit and Central Valley Chinook salmon, a species that wildlife officials said was practically decimated amid recent droughts, SFGATE previously reported.“The vision for Dos Rios is a journey into the past, revealing a lush Central Valley and a local escape – adjacent to two rivers and a wildlife refuge,” said California State Parks Director Armando Quintero in a statement. “State Parks is committed to ensuring access for all Californians as we collaboratively craft this park alongside the public, tribal partners, and stakeholders for a healthier natural environment close to home.”SFGATE senior reporter Amanda Bartlett contributed to this story.