ANS & IPM in the Central Arizona and Salt River Projects
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![Page 1: ANS & IPM in the Central Arizona and Salt River Projects](https://reader035.fdocuments.net/reader035/viewer/2022062408/5681336e550346895d9a8200/html5/thumbnails/1.jpg)
ANS & IPM in the Central Arizona and Salt River Projects
Major conduit of ANS
Critical partners in IPM
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CAP and SRP are major aquatic resources in
Arizona• Include over 800 km of major
aqueduct
• Includes over 1,000 km of minor canals
• CAP includes Lake Pleasant
• SRP includes Roosevelt, Apache, Canyon, Saguaro, Horseshoe, and Bartlett Lakes
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Stakeholders
• Governments
• Urban water users
• Farmers
• Developers
• Aquatic recreation
• Fish and wildlife
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CAP ANS Issues
• Source water from the Colorado River
• Transport of exotic fishes, bivalves, aquatic weeds
• Year-round water movement
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SRP ANS Issues• Source water from the Bradshaw and
White Mountains• Multiple recreation lakes in close
proximity to metro area• Transport of exotic fishes, bivalves,
aquatic weeds• Year-round water movement
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ANS Management implications
for operations• Aquatic weeds impede flow
• Concern over introduction of Zebra mussels and other bivalves
• Taste and odor problems for potable water
• Deposition of sediments
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Traditional methods of management• Algae and weeds - chemicals
and physical• Exotic bivalves - molluscides• Taste and odor algae -
chemicals and carbon filtration
• Bar grates for large fish
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Integrated PestManagement
• Education• Exclusion• Monitoring• Control• Eradication?
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Integrated PestManagement - Education
• Operating Staff
• Management
• Recreation public
• Other stakeholders
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Integrated PestManagement - Exclusion
• Work with Task Force to avoid introduction
• Control structures at inflow• Recreation public• Other stakeholders
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Integrated PestManagement - Monitoring
• Collectors
• Staff inspections
• SCUBA inspections
• Remote sensing
• Other agencies staff and public
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Integrated PestManagement - Control
• Algae and weeds - triploid grass carp
• Exotic bivalves - triploid bighead carp?
• Aquatic weeds - nutrient management
• Dry down
• Chemicals
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Additional Integrated PestManagement - Control
• Watershed monitoring -(Colorado Basin, Salt River, Bill Williams River)
• Limit transport of exotics - aquaculture, recreation
• Use of water for recharge - basins ideal for exotic plants
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Future Management Issues• Further reduction in irrigation and
more urban supply - better water quality
• Large amounts for recharge projects - need to avoid plugging
• Require more input to watershed management
• Protection of native fish, control of exotics