Aquatic Weed and Algae Control in Irrigation Canals

 
 
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 Background

Aquatic weeds and algae are an ongoing problem for irrigation districts in southern Alberta, as they adversely affect the operation and maintenance of canal and on-farm infrastructure. The need to allocate time and labour to address the problem and the loss in water conveyance and down-time presents a significant burden to both irrigation districts and water users. These problems are expected to increase if the irrigation season becomes hotter and longer as a result of climate change.

Project Objectives

This study identified and assessed current methods and strategies for:
    • Prevention of aquatic weed and algae growth in canals
    • Control of existing aquatic weed and algae problems in canals
    • Effective screening of aquatic weed and algae for irrigation pumping systems
Project Scope

The scope of this study involved:
    • A literature review and assessment of aquatic weed and algae problems and their control strategies for streams, reservoirs and irrigation canals in Alberta, the United States, Australia and parts of Europe
    • A series of at least five interviews with Alberta irrigation district managers and staff to determine the nature and effectiveness of current aquatic weed and algae prevention and control practices
    • A prediction of aquatic weed and algae growth scenarios based on parameters such as flows, nutrient concentrations, drought years and reservoir storage
    • An assessment of aquatic weed and algae prevention and screening technologies suitable for Alberta, including mechanical and chemical control systems and pump screening equipment
 
 
 
 
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For more information about the content of this document, contact Andrea Kalischuk.
This document is maintained by Bonnie Hofer.
This information published to the web on December 8, 2009.
Last Reviewed/Revised on January 24, 2013.