Lake Thunderbird State Park is a great option for dumping black and gray water, as well as filling up fresh water. They also provide a hose for flushing tanks and a trash bin for waste disposal.Roadrunner RV Park offers a dump station with easy access and a convenient location just off Highway 19 in Lindsay. Military Park - Tinker AFB FamCamp is available to military personnel and their families, providing both black and gray water dumping options.Council Road RV Park features a well-maintained dump station that's perfect for anyone traveling through the area, with easy access off of I-40.