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Diurnal Tide (K1)
https://niwa.co.nz/our-science/coasts/research-projects/all/physical-hazards-affecting-coastal-margins-and-the-continental-shelf/news/k1mov
Solar Semidiurnal Tide (S2) - chart
https://niwa.co.nz/our-science/coasts/research-projects/all/physical-hazards-affecting-coastal-margins-and-the-continental-shelf/news/s2
Solar Semidiurnal Tide (S2) - animation
https://niwa.co.nz/our-science/coasts/research-projects/all/physical-hazards-affecting-coastal-margins-and-the-continental-shelf/news/s2mov
Are kōura present in your waterway?
https://niwa.co.nz/node/111626
Why are kōura rare or absent in your waterway?
https://niwa.co.nz/node/111627
Monitoring and maintenance of kōura
https://niwa.co.nz/node/111630