Toutle River RV Resort is located in Castle Rock, WA at the apex of the Toutle and Cowlitz Rivers. The resort can accommodate over 800 RV's and is the largest RV resort in the Northwest. The resort has the only private access to the confluence of the Toutle and Cowlitz River that offers access to the public (resort guests). The confluence of these two rivers is widely revered as one of the finest fishing holes in the state.