also be a potential indicator of intensive land use
impact where fertiliser is applied to land (Rosen, 2001).
- - - - - -
Chloride (Cl)
Chloride is relatively unaffected by geochemical processes which makes it a good indicator of general
groundwater quality. The primary source of chloride in groundwater is marine sourced rainfall recharge to
an aquifer. However, saltwater intrusion and land use activities, such as wastewater and effluent
discharges, can contribute chloride to …
https://www.nems.org.nz/documents/water-quality-part-3-lakes/
page
Technical Memorandum | Draft Baseline State for Escherichia coli and Cyanobacteria (Planktonic) in Taranaki Rivers and Lakes
year at 40 popular primary contact sites, including a range of beaches, rivers and lakes around Taranaki. There
are 23 freshwater sites (i.e. rivers and lakes) included in the current CISH programme.
The monitoring results highlight the impact that rainfall has on recreational water quality. Escherichia coli
concentrations can be
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
a week between 1 November and 31 March each
year at 40 popular primary contact sites, including a range of beaches, rivers and lakes around Taranaki.
There are 23 freshwater sites (i.e. rivers and lakes) included in the current CISH programme.
The monitoring results highlight the impact that rainfall has on recreational water quality. Escherichia coli
concentrations can be significantly elevated at primary contact sites for up to three days following heavy
rainfall. This is owing to the
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: 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
Tawhiti Catchment Annual Report 2023-2024
performance for consent 10247-1.1 17
Table 10 Evaluation of environmental performance over time 18
List of figures
Figure 1 Sampling site locations, Everett Road Quarry 10
Figure 2 Discharge rates from Civil Quarries stormwater system, plotted against rainfall in 10 minute
interval totals. The red line is the consented discharge rate limit 12
Figure 3 Abstraction rates from Civil Quarries Emergency pump. The red line is the consented
abstraction rate limit 13
List of
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