DECISION OF RIVER IMPROVEMENT SECTION USING SIMPLE HABITAT EVALUATION TECHNIQUE - AS A CASE OF ICHINOMIYA RIVER -

Abstract

HEP (Habitat Evaluation Procedure) is a one of the major method to quantify environmental response for the impact occurred by river development. HEP is useful method, can be applied to environmental impact assessment. It is simplified procedure can be applied to a various projects such as a disaster restoration with a little time required for planning or the site with a little investigation has done.

In the text, the procedure was described and was applied to river improvement of Ichinomiya River in Chiba Prefecture, without detailed investigation of habitat that had been done in the past. In using this technique, an appropriate river section for habitat was concluded. And more, this study case will also be referred as a one of a case of evaluation after a construction and adaptive management for river environment.