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Models for estimating sediment yields in the Waikato-Auckland-Northland region: A comparison

Publication date:  June 2017
Publication reference number:  CR 279

The regional/unitary councils for Waikato, Auckland, and Northland require a model to predict the annual delivery and sources of sediment across their regions for the purposes of environmental reporting and to inform strategy, policy, and sediment management
operations.

This study addresses this requirement in two tasks. First, by developing an improved, gridbased version of the empirical Waikato-Auckland-Northland Sediment Yield (WANSY1) model calibrated using observed sediment yields from the wider region. Second, by comparing the performance, capability, and ease-of-use of this new model (WANSY2) against other existing sediment yield estimators.