There are a lot to choose from. I'd suggest that you check a couple of the RV park review sites to see what suits you the best. Bear in mind that from Klamath, you're closest to Prairie Creek, which is arguably the best of the groves easily accessed. (Your granddaughters will love the elk.). Other major groves are just north of Crescent City. And around Eureka. Last November we visited the groves in both areas over a period of weeks. Shoreline in Crescent City was great for bay front sites. Riverwalk in the Eureka area was very good. Many of the parks in Klamath were closed for the season. As was our very favorite in the Redwoods - Giant Redwoods.