Benchmarks were selected at key reference points and GPS coordinates were established using satellite data. For two weeks in June, the hydrographic survey team continuously collected data along 700 transect lines covering over 250 miles of the lake. Bathymetric data were measured with a depth sounder and stored electronically on the boat's computer. This map of Lake Belton was developed by TWDB after they conducted a comprehensive hydrographic survey of the lake. This map displays water depths in different sections of the lake.
Deeper parts show up as darker areas.
Maps like these can help water managers assess how sedimentation affects lake volumes and can also be useful for navigation and recreation. This map of Lake Belton shows surface water elevations. For example, lighter areas that show up as yellow and brown are higher. Sites that are darker show up as dark blue. This information is useful for water managers because it can help them determine how water is distributed within a lake and how much water they have.