infiltration expenditure during the 2021-2022 monitoring year consisted of:
• $3,325 spent on pipeline renewals
• $891 spent on CCTV.
The expenditure for pipeline renewals was entirely on project management, investigation and design. No
construction occurred.
A wastewater network modelling project is underway which uses rainfall and flow data to create a calibrated
digital model of the entire Inglewood wastewater network. The calibrated model will be used to assess
network performance
pump stations (all due to high rainfall and power outages during Cyclone Dovi in
February 2022), and a further 14 reticulation overflows (the majority of which were due to high rainfall or
blockages due to fat and/or wet wipes). This total of 23 unauthorised incidents is similar to the previous two
monitoring periods.
During the year, NPDC demonstrated an overall high level of environmental and administrative compliance
and performance with the resource consents related to NPWWTP
This helps
guide decision-making around growing seasons, flood
management, fishing, swimming and surf conditions. River
flows are influenced by rainfall and temperature and tell us
how dry or wet a summer is. River flow measurements can
help us ensure water use is managed in a way that protects
freshwater ecosystem health. Find more information on
river flows in the Water chapter.
Air temperature
Annual mean air temperatures in the region’s main urban
areas
page
Map1: Rain gauge sites
Table 1: Rainfall monthly and year to date totals at 27 rain gauge sites in Taranaki.
June Year to Date
Hydro_Sites # days >
0.5 mm
Total
Rainfall
(mm)
% of
typical
month
Total to
date (mm)
% of typical
year to date
% of typical
full year
Records
Began
North Egmont at
Visitors Centre 8 658.0 98.4 2915.0 99.0 43.4 1991
Dawson Falls 5 906.0 191.2 3102.5 151.4 68.9 1933
Kahui
page
Doc. No: 3004955
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR February 2022
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
consent conditions occurred during the previous monitoring period and again during the
period under review when, following higher than average rainfall the minimum separation distance between
burial sites and the water table was not met in some areas of the Cemetery. An abatement notice (EAC-
24486) was issued on 28 March 2022 and NPDC are currently working with a consultant to improve
drainage at the site to prevent any further breaches of the consent occurring.
For reference, in the 2021-2022
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
page
Monthly Year to Date
Hydro_Sites # days >
0.5 mm
Total
Rainfall
(mm)
% of
typical
month
Total to
date (mm)
% of typical
year to date
% of typical
full year
Records
Began
North Egmont at
Visitors Centre 17 713.0 112.0 2257.0 99.2 33.6 1991
Dawson Falls 16 555.0 120.1 2196.5 139.5 48.8 1933
Kahui Hut 20 563.5 125.2 1665.0 101.3 34.5 2006
Mangorei Upper at
Forest Hill 17 450.5 118.6 1512.0
survey and heavier rain later in the morning. The survey was
preceded by moderate rainfall 24 hours prior sampling (13.5 mm) at Brooklands Zoo rain gauge. There was
a light mist/intermittent drizzle during sampling. Over the last seven days prior sampling 66 mm of rain was
measured at Brooklands Zoo rain gauge. Samples collected were also assessed for odour.
Out of the 11 samples collected, one had a distinctive odour, described as earthy/woody, coming from
STW001157, which suggests the
change
As the impacts of climate change
intensify, we are considering how
we can best support climate
action in Taranaki.
What are the issues?
Climate change will have wide-ranging impacts on
Taranaki. Temperature is expected to increase by
between 0.5°C and 1.5°C by 2040, while rainfall will
become more variable, increasing both the risk of
drought on one hand, and the risk of floods on the
other. Sea-level rise will increasingly threaten coastal