Camping is still not allowed at Oceano Dunes due to concerns over creek overflow.
The ban has been in place for five weeks now, resulting in hundreds of cancellations.
Daytime use is also limited.
Heavy rain raised water levels at the Arroyo Grande Creek, which opened up for day use this week, allowing people to come and recreate.
However, camping is still not permitted due to safety concerns.
California State Park has canceled around 900 reservations through April.
Businesses in the area are struggling as they heavily rely on campers.
There is still no specific date for camping to be allowed again, but the Memorial Day weekend is hoped to provide a much-needed boost to the area.
California State Parks recommend checking for updates before visiting the dunes.