Referred to locally as the lake turning over the thermocline is a feature of lakes with deep water. The water on the top of the lake changes temperature much more variably during the year. On West Lake, it can reach as much as 75 degrees in July while the water below, greater than 35 or 40 feet deep is relatively stable around 45 degrees. In the fall and early winter, the top strata of the lake will cool to below 45 degrees, and then because it becomes denser, it will "sink" below the lower strata, thus, displacing it and making the lake "turn-over". In the deepest part of West Lake (near the 136ft mark), no light is availble, and hence little life is known whether fish or plant. Typically questions are raised as to why the surface water gets dirty for a short period of time in the fall, this this is the standard answer.

The harbor is a man made inlet located on the north end of West Lake. A board walk surrounds the harbor and this is one of the most tranquil parts of the lake. Homeowners in the harbor have a more affordable way to have access to West Lake, and still get to enjoy the clean waters West Lake has to offer. Homes in the Harbor typically range from about $350k to as much as $700k.

The Dry Dock, connected to Four Season's Resort offers a simplified menu, but consistent delicious food. One of the few restaurants on West Lake Okoboji, the Dry Dock offers up legendary breakfasts, great lunches and dinners, and the local favorite Friday Night Fish Fry. Sit inside or out after arriving by foot, car, or boat.