Ministry of Environment
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Report: Arrow Lakes Reservoir Nutrient Restoration Program Year 16 (2014) Report

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Upper and Lower Arrow Lakes Reservoir (referred to as Upper Arrow and Lower Arrow in the report) is a warm, monomictic lake with isothermal temperatures from late fall to early spring and stratification during the summer months. In 2014, flows were average, and highest flows occurred in late July.

Author:  M. C. Bassett, E.U. Schindler, L. Vidmanic, T. Weir and D. Sebastian

Old Reference Number:  RD 151

Old Reference System:  Fisheries Project Report

Date Published:  Mar 2016

Report ID:  49896

Audience:  Government and Public

Significant restoration of Upper Columbia basin aquatic systems impacted by hydro developments began several decades ago with construction of two major kokanee spawning channels on Kootenay Lake and Arrow Lakes Reservoir (Redfish Consulting Ltd 1999). A second major restoration initiative began in 1992 on Kootenay Lake and was designed to restore the declining kokanee (Onchorynchus nerka) population that top predators Gerrard rainbow trout (Onchorynchus mykiss) and bull trout (Salvelinus confluentus) depend on (Ashley et al. 1999). Nutrient additions to Arrow Lakes Reservoir began in 1999 and were modelled after the successful Kootenay Lake experiment aimed at increasing the kokanee population and their salmonid predators.

Report Type
  Fish and Aquatic Habitat Information
  Fish and Fish Habitat - Restoration
  Fish Species - Kokanee - Oncorhynchus nerka
  Region - Kootenay
  Watershed Groups - 300 - Columbia
  Water Information - Limnology
  Water Information - Water Quality

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