Sample Products

Elevation-Area-Volume Tables and Graph

Elevation-Area-Volume Tables and Graph

The primary purpose for conducting a hydrographic survey is to determine current reservoir capacity.  TWDB provides updated area-capacity tables at 0.1-feet increments in elevation.

Elevation Relief Map

Elevation Relief Map

This view of the reservoir describes the bathymetry as color coded blocks by reservoir elevation.

Contour Map

Contour Map

Bathymetric contours are extracted from the raster representation of the reservoir TIN model using ArcGIS.  Contour increments vary from 1 to 10-feet depending on the size, shape, and overall depth of the reservoir.

Sediment Thickness Map

Sediment Thickness Map

This map is produced for sedimentation surveys only and illustrates the location of sediment accumulation in the reservoir by thickness.

Depth Ranges Map

Depth Ranges Map

This view of the reservoir describes the bathymetry as color coded blocks by reservoir depth.

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