page
Doc. No: 2813485
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR June 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth Egmont
Waitaha Industrial Catchment Annual Report 2023-2024
than 0 g/m3 in Pond 1 and 2 8
Figure 3 Daily discharge volumes (m3/day) from the HWWTP and daily rainfall data (mm) from a
Council rainfall station located approximately 5 km east of the site (2021-2022) 12
Figure 4 Location of intertidal survey sites in relation to the outfall 13
Figure 5 Mean number of species per quadrat for summer surveys (1986-2022) 14
Figure 6 Mean Shannon-Weiner Indices per quadrat for summer surveys (1986-2022) 14
Figure 7 Location of shoreline water
of material in any kind of information retrieval system. The copyright for the
data, maps, figures and tables in this report is held by NIWA.
page
Contents
Executive Summary iv
1. Introduction 1
2. Present Climate 3
2.1 Taranaki regional environment 3
2.2 Climate of Taranaki region 4
2.3 Storms and high intensity rainfall 6
2.3.1 Methods 6
2.3.2 Observed trends in daily extremes 8
2.4 High winds and tornadoes 13
2.4.1 Winds 13
2.4.2 Extreme winds 15
page
Doc. No: 2747617
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR March 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth
page
Doc. No: 2835178
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR July 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth Egmont
was compliant with current stormwater management plan and
contingency plan.
Environmental effects of exercise of consents
Potential environmental effects on the receiving environment at this site include contamination by
hydrocarbon spills and increased sediment during high rainfall events. These effects are considered to be a
low likelihood and no evidence of negative environmental effects were identified during inspection.
Evaluation of performance
A tabular summary of the
Prolonged and/or heavy rainfall will often result in high
levels of enterococci in the samples as these are washed down flooded streams and rivers from farmland.
This can be exacerbated by a low tide where a sea sample collected from a site near a stream mouth may
contain a high proportion of freshwater.
Water quality at Middleton Bay
Contact recreational bacteriological water quality at Middleton Bay was monitored by the Council on 22
separate occasions between early November 2023 and late
page
Doc. No: 2765952
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR April 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth
higher
than average rainfall the minimum separation distance between burial sites and the water table was not met
in some areas of the Cemetery.
During the year, NPDC demonstrated a good level of environmental and high level of administrative
performance with the resource consents
For reference, in the 2020-2021 year, consent holders were found to achieve a high level of environmental
performance and compliance for 86% of the consents monitored through the Taranaki tailored monitoring