Executive Summary
This report is a collation of hydrological information for the Waitaki Catchment. It uses existing hydrological information to illustrate the magnitude and variability of flows within the catchment, including the influence of existing infrastructure on natural flows. Flow data tables, flow statistics, catchment maps, and graphs of historical water levels and flows are provided for lakes, canals, and rivers/streams.
The report describes a spreadsheet model developed for assessing reliability of supply to run-of-river users within the mainstream Waitaki River and its tributaries.
The information in this report provides a means to broadly assess river flows and resource availability under various potential environmental flow and allocation regimes. The report does not make any recommendations on appropriate environment flows/levels or allocation regimes.
Flow information for this report was provided by Environment Canterbury, Meridian Energy Limited and NIWA.
Appendices to the report provided detailed hydrological information for sites within the catchment that have recorded flows.
