in rainfall patterns have
caused difficulties at various sites in the past as localised rainfall may impact on
bacteriological quality on isolated occasions]. Where necessary, a 2 metre sampling
pole was used for bacteriological sample collection immediately beneath the water
surface and at a minimum of calf depth at the sites. Thirteen samples were collected
from each site during the season.
Samples were analysed for enterococci, E. coli and faecal coliform bacteria, turbidity
and
of DO concentration (g/m3) with consent conditions in the primary and
secondary oxidation ponds in 2016-2017, between the hours of 11:00 and 14:00.
Data was collected from the pond outlet 11
Figure 3 Faecal coliform counts in the final effluent from the maturation cells (1992-2017) 14
Figure 4 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 (2016-2017) 16
Figure 5 Map of
location map 4
Figure 2 Burial Plan for first five years of operation 9
Figure 3 Groundwater elevations 2019-2020 in comparison to rainfall 24
Figure 4 Groundwater levels GND2624-north 25
Figure 5 Groundwater levels GND2627-north 25
Figure 6 Groundwater levels GND2625-east 26
Figure 7 Groundwater levels GND2623-west 26
Figure 8 Groundwater levels GND2484-south 27
Figure 9 Groundwater levels GND3032-south 27
Figure 10 Type of internment planned for Area-A and …
The Waitara scheme is now very resilient. But there remains a small risk that damage could
occur during a very large flood, which might compromise the level of protection afforded to
the township. We keep a careful eye on the scheme’s performance during very heavy rainfall
and occupants can expect a timely warning if we do see greater risks emerging.
However, the risk factor today is extremely low compared with other risks to property, such
as damage from high winds.
Lower
stormwater sampling and release records and inspections of the discharge
point and receiving waters in the Herekawe Stream. Scheduled inspections were carried out on 16 August
2021, 4 February 2022, 11 March 2022 and 21 June 2022. Notes from these visits are summarised below.
16 August 2021
On site 10:45 to 11:15. Weather was fine with a light northwesterly wind. 15 mm of rainfall had been
recorded over the previous week at the Brooklands Zoo station. Stormwater ponds were sampled for
three day period
following significant river/stream fresh conditions. [NB: regional differences in
rainfall patterns have caused difficulties at various sites in the past as localised
rainfall may impact on bacteriological quality on isolated occasions]. Where
necessary, a 2 metre sampling pole was used for bacteriological sample collection
immediately beneath the water surface and at a minimum of calf depth at the sites.
Thirteen samples were collected from all but one site (12 samples)
hydrogeologic conditions (Taylor and Evans, 1999). These result in a complex
system of unconfined, perched and semi confined aquifers within the volcanic deposits. The water table in
the ring plain area is typically encountered between 1 to 10 m below ground level. Seasonal variations in
water table depth of up to 5 m are common. Groundwater flow generally reflects surface topography and
flows radially from Mount Taranaki. Recharge to the Taranaki volcanic aquifers is mainly by rainfall
hydrogeologic conditions (Taylor and Evans, 1999). These result in a complex
system of unconfined, perched and semi confined aquifers within the volcanic deposits. The water table in
the ring plain area is typically encountered between 1 to 10 m below ground level. Seasonal variations in
water table depth of up to 5 m are common. Groundwater flow generally reflects surface topography and
flows radially from Mount Taranaki. Recharge to the Taranaki volcanic aquifers is mainly by rainfall
grass sowing,” says the
Council’s Director-Operations, Stephen
Hall.
“The storm’s impact on the ring plain was
Continued Page 2
Mapping a very wet winter
NZ ShakeOut | national earthquake drill | 9.15am, 15 October | www.shakeout.govt.nz
Rainfall over the winter months of June, July and August was well above the season’s
normal at sites monitored by the Taranaki Regional Council, as illustrated by this map
showing totals at some of our measuring stations.
the region’s rivers, streams
and wetlands.
page
2024/2034 Long-Term Plan 5 Consultation issues
Issue 3: Addressing climate change
As the impacts of climate change
intensify, we are considering how
we can best support climate
action in Taranaki.
What the issue is
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