Auckland hydrology situation report. 2 May 2022
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 is below the lowest category of Dry. Regional monthly rainfall for April was approximately half the long-term average. Most soil moisture sites are in the Normal range north of the isthmus, and sites in the south are at a Low or Very Low status. River flows are mostly above the mean annual low flow (MALF), with 8 sites below MALF, 7 of which are below 85% MALF, including the Wairoa River. Groundwater levels are similar to previous reports, with most sites in the southern aquifers at a Low or Very Low status, including shallow volcanic aquifers. ...