Bathymetric Map Construction



The base for the bathymetric map construction is the echogram. After the field-work is finished the echogram for each track is cut into a separate strip. The depth intervals that are to be used on the bathymetric map should then be determined (see section 4.1. and 4.2.). The general principle is that the contour-line intervals (1c in meters) should be positive integers. The relationship between contour-line interval (1c) and number of contour lines (n) is given by:
$$ \frac{{{}^D\max }}{n} \sim {1_c} $$
where Dmax = the maximum recorded depth (in meters). For most scientific purposes, e.g. when bathymetric maps for whole lakes are concerned, one can conclude that between 4–20 contour lines are required.


General Principle Contour Line Base Line Interpolation Method Depth Interval 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1981

Authors and Affiliations

  1. 1.Water Quality LaboratoryNational Swedish Environment Protection BoardUppsalaSweden

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