Bathymetry is the measurement of water depth at various places in a body of water.
In addition, the term also refers to the information derived from such measurements. Bathymetric data is an essential tool scientists use to monitor the ecology of the river, and to assess the possible impact of hydrodynamic changes upon the riverine ecology. Bathymetry was identified as an important data need during the development of the Long Term Resource Management program and continues to be ranked high in data needs assessments among river managers. Details of the methodology are included in this web site. At left is the boat currently used to survey the river and capture the bathymetric data.