The Northland Regional Council (NRC) requested Barnett and MacMurray (B&M) investigate two questions raised by stakeholders in relation to the Kaihu River.
- Briefly investigate the effects of realigning the Kaihu River mouth to reduce possible backwater effect due to ebb tide and flood flows in the Northern Wairoa River.
- Briefly investigate the water surface gradient in the lower Kaihu River (downstream of Baylys Coast Rd) at low tide in 2 and 5 year ARI flood events, using existing model results.
This short report gives the results of the investigation.
- Kaihu Stage 3b - Junction Issues.pdf (110 KB)