Tracy Oasis Marina-Resort is located on the southern most part of the California Delta and offers all your boating needs in one location. Tracy Oasis Marina-Resort's store is one of the largest on the Delta, carrying everything from groceries to clothing. The facility has a boat launch ramp, berthing, indoor outdoor dry storage for your boat, fuel and guest docking. You'll also find a large section of fishing tackle, featuring black bass tackle. Whether you are storing your boat in the water or just launching for the day there are many beautiful and interesting things to see and explore. Home Of Tracy Bass Amateur Tournament Series And Tracy Bass 4 Cash.