POST-Arrow_Shelter_Bay-J-Walker-Larsen.jpg Photo: J. Walker-Larsen

Adding nutrients to Arrow Lakes Reservoir

Project Year: 2024-2025

Multi-year Project

Project Lead

Province of B.C.

Watershed/Sub-region

Columbia Region

West Kootenay

Project Type

Habitat-based Actions

FWCP Contribution

954,902.00

Action Plan Alignment

Reservoirs & Large Lakes

Project ID

COL-F25-F-4124-DCA

F25 Arrow Lakes Reservoir Nutrient Restoration Program

This ongoing restoration program addresses nutrient losses in Arrow Lakes Reservoir resulting from the construction of Hugh L. Keenleyside, Mica, and Revelstoke dams.

In this bottom-up approach, the addition of nutrients—nitrogen and phosphorus in the form of liquid agricultural-grade fertilizer—from April to September supports phytoplankton populations that are suitable for the production of zooplankton, including daphnia, a main food source for kokanee.

This project also includes monitoring of several trophic levels.