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Report: Assessment of Past Puntledge River Restoration Projects FWCP COA-F17-F-1206
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A monitoring program was implemented to assess the physical and biological performance of past side-channel development and rehabilitation projects in the Puntledge River. The program focused on investigating juvenile use, adult spawning and incubation survival in Powerline, Forbidden, and Bull Island side-channels to determine whether they are continuing to provide stable and high quality spawning and rearing habitat for Puntledge River priority species.
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Author: E. Guimond
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Old Reference Number: COA-F17-F-1206
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Old Reference System: FWCP Fish Wildlife Compensation Program - Coastal
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Date Published: May 2017
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Report ID: 52746
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Audience: Government and Public
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A monitoring program was implemented to assess the physical and biological performance of past side-channel development and rehabilitation projects in the Puntledge River. The program focused on investigating juvenile use, adult spawning and incubation survival in Powerline, Forbidden, and Bull Island side-channels to determine whether they are continuing to provide stable and high quality spawning and rearing habitat for Puntledge River priority species. This project addresses Research and Information Acquisition and Habitat based priority actions in the Puntledge River Salmonid Action Plan (BC Hydro 2011) by assessing the efficacy of habitat enhancements undertaken by the FWCP program.
Coho salmon was observed spawning in all side-channels whereas Chinook were counted in Forbidden and Bull Island only, and chum and pink salmon in Powerline only. High discharges and poor visibility during peak spawning impeded surveys and collection of accurate data.
Hydraulic sampling methods were employed to evaluate incubation success in Bull Island and Powerline side-channels. Overall survival at Bull Island was 99% and consistent with expectations that the high quality screened spawning gravels would provide optimum incubation conditions as demonstrated in past studies at this site. Overall survival at Powerline side-channel was 51% possibly due to the greater incidence of fines at this location.
Mark-recapture surveys in the Forbidden (and Wong) side-channel complex were conducted during unseasonably cool conditions resulting in low population estimates compared to biostandards. Total coho population was estimated at 0.18 and 0.14 coho fry/m2 in Forbidden and Wong side-channels, respectively. Routing monitoring in this side-channel complex is recommended to inspect intake function, beaver activity and fish access during the juvenile outmigration and adult spawning periods.
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Report Type
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Fish and Aquatic Habitat Information |
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Subject
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Region - Lower Mainland |
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Fish and Fish Habitat - Habitat and Stream Assessment |
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Fish and Fish Habitat - Restoration |
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