RIMU hydrology situation report. 16 February 2021
Author:Auckland Council Research and Evaluation Unit, RIMU
Source:Auckland Council Research and Evaluation Unit, RIMU
Regional summary for 9-16 February 2021
The rain event on 15 February delivered approximately 20 to 80mm of rain, generally increasing from south to north. Weekly totals exceeded 60mm for much of the region. Soil moisture increased region-wide and all sites are in the normal or high range. River flows increased and all sites are above the mean annual low flow (MALF). Groundwater levels remain at similar levels to previous reports. Groundwater level increases were recorded in shallow aquifers which respond quickly to rainfall. Low groundwater levels persist in deep aquifers and those aquifers which respond slowly to rainfall.