sites (Waingongoro River
at Ohawe, Kaupokonui River at the mouth, and Waiwhakaiho River at the last riffle and at
Merrilands Domain) on a total of 17 individual site surveys, and detaching or detached mats
accumulating on the river’s edge triggered the ‘Alert’ level at the same four sites on a total of
15 surveys. Levels of cyanobacteria were lower than in the previous four seasons; the
improvement was probably caused by above-average rainfall causing a large number of
freshes that scoured
landowners while the Government sorts out the wide ranging and many
detailed technical and operational problems with the NZ ETS and consulting directly with
industry and forestry interests.
The Climate Change Projections for New Zealand report analyses expected changes in New
Zealand’s climate such as temperature, rainfall and other climate variables, out to 2120, and
draws heavily on climate model simulations from the Intergovernmental Panel on Climate
Change (IPCC) Fifth Assessment report. For
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
produced water is disposed of by deep well injection.
Stormwater from the production station is collected and discharged at three separate points. The water level
in the firewater pond in the north western corner of the site is maintained by an abstraction from the
Ngaere Stream. Overflow due to rainfall entering this pond is discharged to land and to the Ngaere Stream
to the north of the pond. Stormwater from the process areas is directed to a large API separator system to
the north east of
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
heavily fished.”
Kayaking and rafting
The Waiwhakaiho River is one of the five main whitewater kayaking rivers in Taranaki, along
with the Stony, Mangorei and Manganui Rivers and Kiri Stream. The Waiwhakaiho is navigable
from the National Park to the sea, and flow recommendations are for after rainfall at 20m3/s,
although it is possible to ‘scrape by with less’.
There is no advertised commercial rafting on the Waiwhakaiho River, but it is offered by
TOPEC as one of their adventure
Policy and Planning agenda 22 Nov 2022
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
Committee of the intention to accelerate the removal of treated farm
dairy effluent discharges from waterways, in most cases. On the upper ring plain
land discharge may not be possible at all times and some discharge of highly
treated waste water may be required. A study on the options for dairy shed and
waste treatment systems in this high rainfall area is being investigated. The
requirement to discharge to land, in most cases, addresses cultural and water
quality concerns.
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.