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 sediment control
measures listed in the ESCP; and,
page
Doc. No: 2906170
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR October 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records
Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth
page
Monthly Year to Date
Hydro_Sites
# days >
0.5 mm
Total Rainfall
(mm)
% of typical
month
Total to date
(mm)
% of typical
year to date
% of typical
full year
Records
Began
North Egmont at
Visitors Centre
14 342.5 70.0 1544.0 94.2 23.0 1991
Dawson Falls 14 379.5 105.9 1641.5 147.5 *36.5 1933
Kahui Hut 17 280.5 72.2 1101.5 92.3 22.8 2006
Mangorei Upper 10 112.0 41.9 1061.5 128.7 29.7 2017
Hillsborough 5
page
Doc. No: 2978685
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR January 2022
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
% of Normal for
year to date
Nth Egmont Ntnl Park (North) 6 68.0 17 1 Nov 1990
Dawson Falls
page
Doc. No: 2882775
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR October 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth
page
Doc. No: 2935274
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR November 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth
Motukawa Hydroelectric Power Scheme - Hydrology Report
Trustpower Ltd
November 2021
Job No: 1008726 Phase 100
Table of contents
1 Introduction 1
1.1 Context 1
1.2 Scope of assessment 1
1.3 Scheme description 1
1.4 Hydrological nodes 3
2 Catchment characteristics and water resources 6
2.1 Waitara catchment 6
2.2 Manganui catchment 6
2.3 Rainfall 6
2.4 Hydrometric data 7
2.5 Water use in the catchment 8
2.6 Manganui River flows 12
2.6.1 Derivation of Manganui River flows at the intake
page
Doc. No: 2859146
TARANAKI REGIONAL COUNCIL MONTHLY RAINFALL AND RIVER REPORT FOR August 2021
Provisional Data Only
Note: some sites record a number of parameters
Table 1: Rainfall at 27 sites throughout the region
Station Sub-region
Monthly Year to Date
Records Began Number of rain
days (>0.5mm)
Total Monthly
Rainfall (mm)
% of Monthly
Normal (%)
Total to date
(mm)
% of Normal for
year to date
% of average full
calendar year
Nth
page
Groundwater quantity
Rainfall or river water that seeps from soils into the pore
spaces between fractures of solid rock or sediments, like
sand or gravel, is known as groundwater. Groundwater is
the largest source of accessible freshwater in the world,
accounting for around 98% of freshwater available for use
on Earth. While groundwater is generally hidden beneath
the land surface, many of the region’s springs, rivers and
lakes are sustained by groundwater
levels GND2102 and rainfall (July 2020-June 2021) 9
Figure 5 Observed groundwater levels GND2102 and abstraction (July 2020-June 2021) 10
Figure 6 Observed groundwater levels GND2103 and rainfall (July 2020-June 2021) 10
Figure 7 Observed groundwater levels GND2103 and abstraction (July 2020-June 2021) 11
Figure 8 Historical groundwater level response and abstraction (2009-2021) 11
page
1
1 Introduction
1.1 Compliance monitoring programme reports and