Forest Investment Account (FIA) - Land Base Investment Program
FIA Project 6808001

    Assessment and Prioritization of Stream Crossings for Fish Passage Through Closed Bottom Structures in the Chilliwack Forest Management Unit
Project lead: Lange, Justin (Madrone)
Contributing Authors: Lange, Justin; Barsanti, Jason; Madrone Environmental Services Ltd.
Subject: Forest Investment Account (FIA), British Columbia
Series: Forest Investment Account (FIA) - Land Base Investment Program
Safe fish passage through closed bottom structures, such as culverts, is vital to ensure fish have access to available habitat in the upper reaches of stream crossed by forest service roads. If installed incorrectly, or degraded overtime, CBS can prevent fish from passing culvert road crossings. Perched culverts prevent access if they are higher than a fishs ability to jump; improper sizing , slope and lack of stream bed simulation within a culvert pose a barrier to fish by increasing stream flow velocity. These conditions could also have a negative affect on other aquatic fauna and thereby reduce the overall function of the aquatic ecosystem resulting in a decline inthe quality of fish habitat for each stage inthe fish lifecycle.


Field Photos JL22 (6.9Mb)
Field Photos JL23 (7.0Mb)
Field Photos JL24 (7.0Mb)
Field Photos JL25 (8.6Mb)
Field Photos JL27 (9.8Mb)
Field Photos JL28 (6.7Mb)
Field Photos JL29 (8.4Mb)
Field Photos JL30 (7.2Mb)
Field Photos JL31 (7.1Mb)
Chilliwack Phase 1 Project Completion Abstract (98Kb)
Chilliwack Phase 2 Project Completion Abstract (0.1Mb)
Final Report (2.6Mb)
Map (2.0Mb)
Culvert Field Data (42Kb)

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Updated August 16, 2010 

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