between the
relatively ‘shallow’ groundwater table and the Haehanga Stream.
This may vary at different times of the year, for example, depending
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5
on rainfall and stream flows. This information is needed to assess
the impact of the discharge to the irrigation areas (and potentially
the composting pads and ponds) on the groundwater and the
subsequent effect due to contaminated groundwater entering
surface water.
18 An initial review undertaken by LEI identified a
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 Committee Agenda June 2024
Revised Assessment of Environmental Effects (AEE) - June 2020
caddisflies). The MCI index (widely used to monitor macroinvertebrates in
streams) is high (typically >100) in streams dominated by mayflies, stoneflies and caddisflies and low
(typically <80) in streams dominated by worms, snails and chironimids.
In Taranaki, nutrients are not such a problem because of fast flowing and relatively short rivers and
streams. High rainfall leads to frequent flushing events in rivers and streams that provide natural
scouring. Even in summer, most Taranaki rivers do
on aquatic life.
4.4.3 Climate
NIWA virtual Climate Station -38.975, 174.525 Thirty years of rainfall and evaporation data is
summarised in Table 1 below
Table 1: NIWA Virtual Climate Station 30-year data for a site near Uruti Site
Uruti Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Total
Rainfall 120.0 107.0 119.2 151.2 181.2 189.5 181.8 178.0 175.4 188.4 149.4 149.0 1890.
Evaporation 134.5 108.0 88.6 52.7 31.1 21.4 25.4 39.0 57.5 85.1 109.3 126.0 878.6
4.4.4
performance for consent 7470-1.1 16
List of figures
Figure 1 Location of TTR site production and monitoring bores 5
Figure 2 Daily abstraction volumes under consent 7470-1.1 (July 2014-June 2015) 10
Figure 3 Daily abstraction volumes under consent 7470-1.1 (2009-2015) 10
Figure 4 Maximum daily abstraction rate under consent 7470-1.1 (2014-2015) 11
Figure 5 Maximum daily abstraction rate under consent 7470-1.1 (2009-2015) 11
Figure 6 Observed groundwater levels and rainfall
moderate
elevations 28
Figure 14 Groundwater elevations GND2691, GND2692 and 2693-located south east of the site at higher
altitudes 29
Figure 15 Groundwater elevations GND2700, GND2701 and GND2703-located centrally at the site at
moderate altitude 30
Figure 16 Groundwater elevations in the deep bore GND0599 in comparison to rainfall 31
Figure 17 Groundwater elevations in the shallow bores GND2702 and GND0600 in comparison to
rainfall 32
Figure 18 Groundwater elevations in
Biomonitoring surveys
A biological survey was performed on two occasions on 16 February 2017 and 26 April 2017, in the Kurapete
Stream, to document recovery of the biological stream communities following the removal of a continuous
discharge to the Stream.
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2. Results
2.1. Inspections
21 September 2016
An inspection was conducted in wet weather with a southerly wind. The monthly rainfall was 316 mm rain,
as recorded at the Inglewood WWTP TRC weather station.
consent holders, site inspections, and data gathering, review and
assessment for compliance. It was a busy season for the Council’s hydrological unit, as the
weather conditions meant the demand for irrigation was high. All irrigation had commenced
by the middle of December.
Over the five month (summer irrigation) period, Mount Taranaki recorded between 71% and
77% of normal rainfall for which meant that rivers were running well below normal for the
entire period. The low stream flows