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RIMU hydrology situation report. 9 February 2021


Author:  
Auckland Council Research and Evaluation Unit, RIMU
Source:  
Auckland Council Research and Evaluation Unit, RIMU
Publication date:  
2021
Topics:  
Environment

Extract

Regional summary for 2-9 February 2021

Rainfall for the region was low, with most sites having less than 5mm total rainfall in the last week. Soil moisture fell at most sites, with only one remaining in the normal range (all others low or very low). River flows increased slightly due to recent rains, but many sites remain below the mean annual low flow (MALF). This includes 19 sites that are less than the default minimum flow of 85% MALF. Groundwater levels are similar to previous reports, but some decreases were observed in Kaawa and Waitematā aquifers in the south, likely due to irrigation demand.

February 2021