73
Carbonate g/m3 CO3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
Bicarbonate g/m3 HCO3 43 89 40 72 44 40 89
Total hardness g/m3 CaCO3 43 73 40 62 43 40 73
Electrical conductivity mS/m 14 21.1 13.3 18 13.8 13.3 21.1
Total suspended solids g/m3 <3 <3 <3 5 <3 <3 5
Total dissolved solids g/m3 108 153 93 123 90 90 153
Dissolved calcium g/m3 10.2 15.5 9.7 13.8 10.3 9.7 15.5
Dissolved magnesium g/m3 4.4 8.3 3.9 6.8 4.2 3.9 8.3
Dissolved potassium g/m3 2.9 3.7 2.7 3.6 2.7 2.7 3.7
Dissolved sodium g/m3 …
2 0.07 - - 3 0.04
Inanga
( ) - - - - 1 0.01
Common smelt
( )
- - - - - -
Brown trout
( )
- - 1 0.02 - -
Shrimp
(P )
- - - - Present
Seine
netting
Inanga
( )
- - - - 1 0.01
Common smelt
( ) 39 0.20 - - 72 0.8
Total number of species 4 - 3 - 6 -
Total number of fish 52 0.23 28 0.47 154 0.91
page
page
Summary and conclusions
page
o
o
o
References
acroform
diverted to the Waiaua River leaving the flow from 72 hectares of the Hihiwera
Stream catchment to pass on downstream through the Opunake urban area.
The 1% AEP flood flow in the existing Hihiwera catchment has been determined to be 12.3
cumecs. The diversion to the Otahi will be 4 cumecs and the diversion to the Waiaua will be
4.7 cumecs leaving 3.6 cumecs in the channel at Whitcombe Road to pass on downstream
through the Opunake urban area.
The smaller channel, known as the
3.2.9 Waitara River 72
Mamaku Road site (WTR000850) 72 3.2.9.1
Community composition 73 3.2.9.2
Temporal trends in 1995 to 2011 data 74 3.2.9.3
Discussion 75 3.2.9.4
3.2.10 Mangati Stream 76
Site downstream of railbrige (MGT000488) 76 3.2.10.1
Te Rima Place, Bell Block (MGT000520) 78 3.2.10.2
Discussion 81 3.2.10.3
3.2.11 Waimoku Stream 82
Lucy’s Gully (WMK000100) 82 3.2.11.1
Oakura Beach (WMK000298) 85 3.2.11.2
Discussion 87 3.2.11.3
3.2.12 Waiau Stream 89
Inland
Operations and Regulatory Committee agenda September 2025
Manawa Energy - Patea HEPS Annual Report 2023-2024
Total
weight
50 kg
Equivalent pigs
Sows 180 162 29,160 583
Gilts 24 150 3,600 72
Boars 18 160 2,880 58
Weaners ( 8 – 10 weeks) 150 18 2,700 54
Total 372 38,340 767
The Company specialised in growing eight to ten weeks old weaners for the market and do not produce
fattening pigs at the piggery. Significantly less effluent is produced by not growing fattening pigs.
Piggery wastewater was collected from various collection sumps situated around the piggery. Raw
Policy and Planning Committee Agenda July 2025
Civil Quarries Ltd Everett Road Quarry