A pre-dam removal survey of Maple River habitat downstream from Lake Kathleen.

Abstract

We collected pre-dam removal data of the habitat and species composition downstream from a human-made dam at Lake Kathleen. We chose two 100 meter transects downstream from the dam and made habitat assessments (including EPT and Shannon-Weaver index) at both. We electrofished and performed snorkel surveys of both transects. We took a macroinvertebrate survey at one transect. We present this data with the hopes that another group in the future may perform a post-dam removal survey in a similar method. We recommend performing t-tests to compare species composition of macroinvertebrate indices and linear regression to test the percent cobble. We hope that the data may be compared in order to make meaningful conclusions regarding the effect of dam removal on downstream habitat.