We found a GREAT stop along I-5 with a small beach where Riley could play in the lake. The lady working at the entry booth told us if you park down to the right you can hike back up the road and over to the left where there is a little sheltered cove. Dogs are supposed to be on-leash, but she said it was a good area for the pup to swim, which = off-leash! Riley romped around for a good 30 minutes fetching sticks out of the water and stalking birds. It was a great spot - highly recommended for anyone traveling up or down I-5!