Research and analysis

Relationship between juvenile salmonid populations and catchment features

The use of Geographical Information Systems (GIS) to automate manual methods of extracting site and catchment features to aid the interpretation of fish survey data for salmonid management.


Relationship Between Juvenile Salmonid Populations and Catchment Features

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email Please tell us what format you need. It will help us if you say what assistive technology you use.


This project provides an analysis on new and existing Geographical Information Systems (GIS) techniques for the measurement of site and catchment features. The GIS provides a data source, a modelling platform and a mapping tool that aim to supply useful improvements to existing fisheries management techniques and have wider usefulness outside the fisheries function. A comparison between data derived from the GIS and existing manual techniques was undertaken. It was shown that in the majority of cases the data was comparable, with successful derivation of the basic map based data using the GIS.

Published 1 January 2003