Taumata Lagoon Water Balance

Greater Wellington Regional Council (GWRC) engaged WM Group to carry out a high-level review to assess whether the proposed re-alignment of the stopbank located to the east of the Waiohine River would have a significant effect on the Taumata Lagoon water balance and lagoon water levels.

Specifically, GWRC requested WM Group to carry out a qualitative assessment of the relative inflow contributions to the lagoon from Waiohine River surface water overflows during flood events and inflows from other sources.