I agree with all that was said about Lake Shasta. We boated, fished and camped there for many years. It could be very hot in July so get full hookups. You can camp at Antlers resort on the Sacramento River arm if you want to be closer to the lake but you can't fish from your campsite. We have stayed at Mt. Gate and Premier RV parks numerous times and they are only 15 minutes from Bridge Bay Resort which is where we have moored our boat when we had one. Another nice lake, if you are willing to travel further, is Lake Siskiyou. It is a great small trout fishing lake and has a 5mph speed limit. Trinity Lake is also nice and there is a KOA there that used to have a marina but I don't know if it is still there as it was many years ago that we camped there. Whiskeytown lake is another possibility but the RV camping is far from the lake and truly is just a parking lot without hookups. There are several other lakes to consider which now have some water and will have more with the snow melt. New Hogan, Pardee (has full hookup sites and the lake level is almost full), Don Pedro, Comanche, New Melones to name a few but check the water levels. New Hogan, Comanche and Pardee have sites close to the water. I also like Kaweah River and Lake Kaweah by Sequoia. Sequoia RV Ranch has full hookups...Good luck!