8.-Dr-Jack-McConchie-Hydrology.pdf [pdf, 30 MB]
...changes in both the depth and velocity of flooding caused by the construction of the proposed bridge (BR07) are small, even during a very large design event. The effects during smaller floods in the Mangamanaia catchment will be even smaller (i.e. negligible). 48. Following construction of the bridge, there is a small increase in water depth immediately upstream of the Project (Figure 1). Approximately half of the increase in water depths greater than 0.7m is within the wetland wh...