Abstract

Updating Bathymetric Surveys for Drinking Water Reservoirs
Track: Water Resources
Authors: Crystal Williams, Rick Twait

The City of Bloomington partnered with GEOMAP to conduct current bathymetric surveys of two lakes in Central Illinois which had previously been done in 1999. Water from these reservoirs is used as the municipal water source for over 80,000 residents. Bathymetric mapping is achieved by interpolating point-data over space. We explored the error associated with the interpolation methods available in the Spatial Analyst ArcToolbox and with datasets of different densities.