Current Sea Rim status per TPWD:
Name: Sea Rim State Park
Status: Park Closed (public not allowed in)
Alert(s): Park Closure Alert . . . Sept. 10, 2017: The park is closed due to extensive damage from Harvey. We will be closed at least until Monday, Sept. 18. Check here for updates.
We are planning on being down there September 30. I hope it is open by then.