Take interstate-5 South approximately 20 minutes to the Twin Cities Road Exit. Turn right off the freeway and follow the signs to Walnut Grove. Turn left on River Road and go through Locke to Walnut Grove. Continue past the Walnut Grove Bridge (i.e., do not turn on the bridge). Go a half mile and turn left on Walnut Grove-Thornton Road (Follow the sign to Thornton). Make the first left turn (about 100 yards) onto Old Levee Road and follow it to the entrance of the Walnut Grove Marina.