New freshwater and estuaries centre information

Links to the latest Freshwater and Estuaries information that went live since the last Update.

Geomorphology influences periphyton abundance

This research project investigated whether the mechanisms for periphyton removal in rivers relate more directly to hydraulic and geomorphic conditions than flow metrics.

Managing water allocation on the West Coast

This project investigated the capabilities and utility of NIWA’s Cumulative Hydrological Effects Simulator (CHES) tool for facilitating discussions and decision making associated with setting and applying water quantity limits in the Grey River catchment on the South Island’s West Coast.

Guide to restoring kōura (freshwater crayfish) in lakes, rivers and streams

Habitat degradation and the introduction of exotic plant and fish species have adversely affected kōura populations throughout New Zealand. However, there are a number of measures that we can use to restore kōura populations in lakes, rivers and streams.