FWIW, you may want to drive a little further into Oregon and look at the Alfred A. Loeb state park, in Brookings. Nice facility across from the Brookings harbor, off of HWY 101. Distance is 47 miles from Klamath, Ca and it is a much nicer place to stay. Don't know where you are heading in Oregon and if you are planning on driving from Gilroy to Klamath in one day, or not. You may just want to drive east on 152 to and hit I5 north to Grants Pass, Or. At Grants Pass take the exit Hwy 199 to Crescent City and then south to Klamath or north to Brookings. Don't know what rig you have but Loeb state park does have a max site length of 50'. Hope this gives you another option.
2019 Tiffen Allegro Open Road 32SA
F53 / 24000# Chassis
2008 Jeep JKS
Ready Brute Elite / Blue Ox BP