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
the presence of degradable organic
matter, taking into account the biological conversion of ammonia to nitrate
CCAB Copper chromium arsenate and boron (wood treatment chemicals)
Conductivity Conductivity, an indication of the level of dissolved salts in a sample, usually
measured at 25°C and expressed in mS/m
Cr Chromium
Cu* Copper
Fresh Elevated flow in a stream, such as after heavy rainfall
g/m3 Grams per cubic metre, and equivalent to milligrams per litre (mg/L). In
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
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
dot) 8
Figure 6 E-BAM set-up and instillation at Central School, New Plymouth 9
Figure 7 Location of Meteorological Stations with respect to the Central School monitoring site 11
Figure 8 Wind rose for the whole monitoring period (from hourly data) 12
Figure 9 Frequency of rainfall with wind direction 12
Figure 10 Boxplots of daily mean PM2.5 over the monitoring period 14
Figure 11 Number of days per year with PM2.5 concentrations 15
Figure 12 Temporal variations in …
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.
of service. Moving faster is not prudent due to the range of other priorities outlined
in this document.
page
2024/2034 Long-Term Plan 9 Consultation Document
Issue 3
Addressing
climate change
As the impacts of climate change
intensify, we are considering how we
can best support climate action
in Taranaki.
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
opportunities and constraints for improving farm dairy effluent management .......... 23
6.1 Soil characteristics .................................................................................................................... 23
6.2 High rainfall and seasonal considerations ............................................................................ 23
6.3 Taranaki river flows and characteristics ............................................................................... 24
6.4