Auckland hydrology situation report. 6 December 2021
Author:Kolt Johnson, Auckland Council Research and Evaluation Unit, RIMU
Source:Auckland Council Research and Evaluation Unit, RIMU
The New Zealand Drought Index for the Auckland Region has risen slightly but remains well below the first category of Dry. Regional monthly rainfall was approximately 80% of the long-term average for November. Soil moisture status is variable across the region, with some sites at Very Low status in the north and central areas. All rivers are above the mean annual low flow (MALF). Groundwater levels have decreased at most sites, coinciding with dryer summer conditions. Most sites in the north have very high groundwater levels for this time of year. Many sites in the south are at low levels for this time of year, particularly for those in deep Waitematā sandstones which respond slowly to rainfall. ...