rainfall events and display a greater range of seasonal water level variation than
the region’s deeper aquifers. In general, groundwater levels across the region appear
relatively stable; however five sites are displaying statistically significant trends in water
level change. Three of these sites display positive trends, meaning water levels are
increasing at these sites. The remaining two sites, GND0508 (Taranaki volcanics aquifer) and
GND0708 (Whenuakura aquifer) display negative trends,
and,
ix) Any other relevant site information.
d) Construction timetable for the erosion and sediment control works and the bulk earthworks
proposed;
e) Maintenance, monitoring and reporting procedures;
f) Rainfall response and contingency measures including procedures to minimise adverse effects in
the event of extreme rainfall events and/or the failure of any key erosion and sediment control
structures;
g) Procedures and timing for review and/or amendment to the erosion and
Notices. These applications are currently sitting with the Council, who
are continuing to liaise with NPDC regarding the situation.
0
10
20
30
40
50
60
70
80
90
0
10
20
30
40
50
60
70
80
90
Vo
lu
m
e
(m
³/
da
y)
Ra
in
fa
ll
(m
m
/d
ay
)
Daily Rainfall at Motunui (mm/day) Onaero SPS Consented Maximum Flow
page
11
In the 2022-2023 period, the Council was not required to undertake
variation of annual
rainfall
mm y-1r
usRainDays10 Catchment average frequency of rainfall > 10 mm days month-1
usRainDays20 Catchment average frequency of rainfall > 20 mm days month-1
usRainDays100 Catchment average frequency of rainfall > 100 mm days month-1
segAveTCold Segment mean minimum winter air temperature degrees C x 10
Hydrology MeanFlow Estimated mean flow m3 s-1
nNeg Mean number of days per year on which flow was less
than that of the previous day
Year-1
6). Contrary to historical
data, the upstream site had higher E. coli numbers, with counts 10m downstream of the unnamed tributary
lower than both upstream and the stream at the beach sites. As the Wai-iti Stream is surrounded by
farmland, it is therefore unlikely that high FIB counts were only attributed to the WWTP in operation.
Additionally, the area experienced moderate to heavy rainfall from early to mid-morning three days prior to
sampling. The accumulation of agricultural, stormwater
allocated across FMU-A and FMU-B. All other aquifers
have insignificant volumes of water allocated (≤1 % of estimated sustainable yield). It is not foreseen that
there will be any increases in groundwater demand in the short to medium-term that would be sufficient
to place groundwater resources under any significant allocation pressure.
As would be expected, monitored groundwater sites display fluctuations in water level as a result of
seasonal variations in rainfall recharge. The
other than in exceptional circumstances, is
workable and can be implemented in the majority (but not all) cases with moderate ease
and minimal cost in respect of being able to utilise existing pond storage systems.
• Those farms with high rainfall and large catchment areas and or high risk soils will struggle
to implement a solely land based effluent irrigation system and in some cases will never be
able to meet the requirements of land only application
• A universal
CDEM Joint Committee March 2024
page
Document Number: 1551853
Taranaki June 2015 Flood Event
Taranaki Regional Council
Private Bag 713
STRATFORD
June 2016
page
Document Number: 1551853
page
Document Number: 1551853
Summary
The key points to be taken from the Taranaki June 2015 Flood Event are:
A high intensity rainfall event occurred between the 19-20 June and was concentrated
on
page
Month May June July August September October November December January February March April
Evaporation mm Average 31.12 21.41 25.43 39.04 57.48 85.05 109.32 126.01 134.46 107.97 88.65 52.65 878.60
Rainfall mm Average 181.20 189.51 181.83 178.04 175.35 188.38 149.39 149.04 120.00 107.02 119.22