T urtle Lake is the hidden gem of the Cormorant Lakes area. Turtle Lake is one of the clearest, cleanest spring fed lakes in the area with water clarity exceeding 15 feet and a maximum depth of 73 feet. Turtle Lake is a popular spot for scuba divers. Located west of Upper Cormorant and Middle Cormorant, Turtle Lake is the closest recreational lake to the FM Metro area. For more information about this lake please scroll to the bottom of this page and click on the three DNR links.