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Thresholds to identify High Sediment Yielding land were selected through a collaborative catchment planning process in the subject catchments and were considered for each catchment in the light of likely sediment reduction, costs and resourcing required. The thresholds for High Sediment Yielding land are >250t/km2/yr for the Waitangi, Mangere, and Whangarei Harbour catchments and >500t/km2/yr in the Doubtless Bay Catchment. 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