Title

Improving Colorado Mountain Highway Culvert Stream Crossings for Trout Passage

Date of Award

3-16-2009

Document Type

Capstone Project

Disciplines

Environmental Policy & Mgmt

Degree Name

Master of Applied Science

Department

Environmental Policy & Mgmt

Advisor

William Robinson

Keywords

CDOT; Culvert; Fish; Geomorphology; Habitat; Highway; Hydrology; Passage; Stream

Abstract

Highways can be effective barriers to animal migration. Where highways cross over streams, a passageway, typically a culvert, not designed for fish access can cut off an organism from miles of habitat. Traditional methods of culvert design, to convey floodwaters, reduced access to aquatic and riparian range. The Colorado Department of Transportation likely has numerous culverts that restrict aquatic passage. This paper provides guidance to CDOT for assessment of stream geomorphic conditions affecting culvert performance for fish passage, understanding aquatic organism habitat requirements, and incorporating ecological parameters into culvert designs that benefit fish and other organisms. A case study illustrates culvert problems in a difficult geomorphic setting including a fish passage assessment to evaluate stream stability for long-term culvert reliability.

This document is currently not available here.

Share

COinS