For Texas, you have to get north of I-10, I believe. Which means you will have a couple spells of freezing weather each winter.
Despite my rant on another part of the forum, most years, the cold spells are short and mild.
In Arkansas, like Texas, most of the better lakes are COE, and very difficult to impossible to get long term lakeside spots. You have to find non-COE lakes.
A couple possibilities -
Hot Springs Arkansas - Lake Catherine - Catherine's Landing: Lake Hamilton RV Resort; Treasure Isle RV Resort; Leisure Landing RV
Texas north of Houston
Lake Livingston - Lake Livingston/ Onalaska KOA; Wolf Creek Park; Longhorn Valley RV
Lake Conroe - Sunset Shores; Park on the Lake; Thousand Trails Lake Conroe - which does have seasonal sites which may not require a TT membership, or might
Lake Texana - near Edna - Texana Park and CG; Brackenridge Park and RV
Lake Calaveras - near San Antonio - Calaveras Lake Park
Medina Lake - west of San Antonio - Medina Lake RV Resort (Not the Thousand Trails Park) - Medina Lake is frequently extremely low. A water front site and be a couple hundred yards from water, or 20 yards from water.
Part of the Colorado River lakes between Llano and Austin
Lake Buchanan - Big Chief RV Resort, Burnett, TX
Lake LBJ - Heart of Texas Lake Resort, Burnett, TX; Rio Vista Resort & RV Park, Kingsland, TX; Bullfrog Cove at Twin Isles RV Park, Kingsland, TX; Sunset Point on Lake LBJ, Marble Falls, TX;
WARNING - I have not stayed at almost all of these parks. Some I have seen and they looked good. I picked these off of the higher rated parks on those lakes from RV Trip Wizard.
This just to give you and idea of where to look and do research. I have no idea about rates, or availability of long range storage on site or in the park.
Also, as mentioned by 2oldman above - look at the Lake Havasu area of Arizona/ Southern California. We drove through the area from Las Vegas to Blythe, CA back in late 2016 and it looked very interesting. From campgrounds in Bullhead City all the way down to Blythe.
Full-Time 2014 - ????
“Not all who wander are lost.”
"You were supposed to turn back at the last street."
2012 Ram 2500 Mega Cab
2014 Flagstaff 832IKBS TT