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Improving water quality
https://niwa.co.nz/our-science/freshwater/tools/guide-to-restoring-freshwater-native-fish/tools/improving-water-quality
Habitat loss
https://niwa.co.nz/our-science/freshwater/tools/guide-to-restoring-freshwater-native-fish/identifying-the-problem/habitat-loss
Restoring flow
https://niwa.co.nz/our-science/freshwater/tools/guide-to-restoring-freshwater-native-fish/tools/restoring-flow
Restoring riparian and instream cover
https://niwa.co.nz/our-science/freshwater/tools/guide-to-restoring-freshwater-native-fish/tools/restoring-riparian-and-instream-cover
Are kōura present in your waterway?
https://niwa.co.nz/node/111626