Cost: starting at $300 a month. Waterpoint Marina: 45-foot and 80-foot yacht charters and party-barge excursions on Lake Conroe. 15264 Texas 105 W., in Montgomery, 936-788-2628; waterpointmarina.com.

You can get realtime lake levels and more for Lake Conroe on the San Jacinto River Authority website. You can see a map of the areas of concern below.