Data Disclaimer: Water level data is provided by USGS and NOAA for informational purposes only. Verify conditions on-site before any water activities.
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The Thomas Bay Land Use Area provides boat ramp access to Little Bear Creek and Lake Oahe near Glenham in Walworth County. This access point serves paddlers and boaters looking to launch onto the reservoir system. **A park entrance license is required** to access this boat ramp, so plan accordingly before your visit.
Lake Oahe is a large Missouri River reservoir known for its calm waters, making it suitable for kayakers, canoeists, and recreational boaters. The area offers opportunities for fishing (largemouth and smallmouth bass, crappie, and channel catfish are present), as well as general boating and paddling. Before heading out, check the [South Dakota Public Fishing Access Map](https://gfp.sd.gov/) for current boat ramp status and water level conditions, as reservoir levels can fluctuate seasonally and may affect launch accessibility.