This is Wednesday — and that means this is the last day to book a campsite reservation at a state park for a Friday arrival on Memorial Day Weekend.

A detailed recreation forecast for the upcoming weekend will appear in Thursday’s Chronicle and at sfchronicle.com.

The first campgrounds to sell out are coastal sites. The last to sell out are in the valleys, foothills and Redwood Empire.

As of Wednesday morning, these parks still had campsites available, from just one day to all three days for the upcoming weekend:

Greater Bay Area: Big Basin & Little Basin Redwoods, Brannan Island, China Camp, Henry Cowell, Mount Diablo, Portola Redwoods.

Coast: Salt Point, San Simeon.

Foothills & valleys: Clear Lake, Clear Lake cabins, Colusa-Sacramento River, Folsom Lake, Fremont Peak, Indian Grinding Rock, Lake Oroville, San Luis, Turlock Lake, Woodson Bridge.

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