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Appendix 2: Water-quality Summary Data

Tables in this appendix contain summary water-quality data for each of the monitored catchments discussed in the main report. This data is the basis for the graphics presented in the ‘Water-quality Baseline‘ section. The first table lists the monitoring sites from which the data is collected as well as the data sources (the latter are listed in full in the References section).

Table A2-A: Summary of catchment site details and data sources

Catchment name		Monitoring site ID (ie, name given by monitoring agency)		Data source
Catchment name		Upstream	Downstream	Data source
Tier 1 catchments	Toenepi	Kiwitahi Road	Tahuroa Road	Wilcock, Monaghan et al, 2007
	Waiokura	Eltham Road	Manaia Golf course	Wilcock, Monaghan et al, 2007
	Waikakahi	Cock and Hen Road	Te Maiharoa Road	Wilcock, Monaghan et al, 2007
	Bog Burn	Forest	Hundred Line Road	Wilcock, Monaghan et al, 2007
	Inchbonnie	Inchbonnie at Bridge	Gault’s farm	Wilcock, Monaghan et al, 2007
Tier 2 catchments	Puwera	108705	108706	Northland Regional Council, unpublished
	Taharua	Taharua at Wairango	Taharua at Poronui	Hawke’s Bay Regional Council, 2006
	Mangapapa	Mangapapa at Coppermine Road (MAN1)	Mangapapa at Troupe Road (MAN7)	Horizons Regional Council, 2007
	Enaki	None	Unnamed	Greater Wellington Regional Council, 2008
	Powell Creek	Powell Creek at Glenview Road	Powell Creek at upstream McConnon Creek	Tasman District Council, 2008
	Rhodes and Petrie	Rhodes Stream at Rolleston Road Petrie Stream at Canal Road	Rhodes Stream at Parke Road Petrie Stream at Orari confluence	Environment Canterbury, 2007
	Washpool	Upper Washpool (Site 14)	Upper Washpool (Site 1)	Otago Regional Council, unpublished
	Rai River	Ronga River (Site RON3) – an upstream tributary of the Rai River	Rai River (Site RAR1)	Marlborough District Council, 2008

Table A2-B: E. coli

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001– 2006	2001– 2006	2001– 2006	2001– 2006	2004– 2006	2006– 2007	2000– 2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~41	12	57	12	12	12	12	35 u/s 7 d/s
Downstream site	Minimum	40	70	4	270	20	54	0	40	20	2	23	29	66	48
	Maximum	46,000	54,800	21,800	11,000	24,300	2,098	190	51,700	31,333	4,100	1,600	17,000	2,400	11,000
	Median	367	1,250	290	530	640	422	7	330	190	336	186*	140	205	580
Upstream site	Minimum		40	13	1	24	10	0			64	15	7	32	290
	Maximum		8,664	20,000	420	24,200	1,986	590			1,800	3,100	2,400	920	2,800
	Median		466	1,220	20	516	393	9	23**		820	462*	425	107	760
Guideline values		260 E. coli per 100 mL = Alert threshold 550 E. coli per 100 mL = Action threshold Microbiological Guidelines for Recreational Water Quality (Ministry for the Environment and Ministry of Health, 2003)
Reference site values		50 E. coli per 100 mL (based on median of 42 for predominantly natural catchment sites across New Zealand; 1996–2002 data set) 200 E. coli per 100 mL (based on median of 200 for predominantly natural catchment sites across New Zealand; 1996–2002 data set)

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are counts per 100 mL of water sampled.
* Average (not median).
** Average from only two samples (5 MPN per 100 mL and 40 MPN per 100 mL).

Table A2-C: Total nitrogen

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006–2007	2005–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2003
Sample number		58	~74	95	77	43	26	~68	12	57	12	12	12	12	14
Downstream site	Minimum	0.41	2.05	1.16	0.26	0.30	0.41	0.72	0.18	0.3	0.45	0.39	8.2	4	0.87
	Maximum	5.80	4.50	5.20	4.30	2.70	1.65	3.07	2.01	3.1	3.1	1	13	6	4.03
	Median	1.76	3.29	2.30	1.10	0.71	0.85	1.35	1.42	1.70	1.2	0.69*	9.6	5	2.44
Upstream site	Minimum		1.94	0.88	0.160	1.93	0.49	1.59			1.1	0.06	6.2	4.5
	Maximum		4.60	4.60	0.820	5.91	34.0	3.28			3.2	0.24	11	6.8
	Median		2.67	2.09	0.388	0.572	1.18	2.67			1.5	0.14*	7.3	5.6
Guideline		0.614 mg/L (ANZECC trigger value for ecosystem protection in lowland rivers)

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are mg/L unless otherwise stated.
* Averages (not medians).

Table A2-D: Nitrate–nitrite nitrogen

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006–2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~68	12	56	12	12	12	12	26 u/s 7 d/s
Downstream site	Minimum	0.032	1.62	0.79	0.036	0.049	0.008	0.576	0.1	0.136	0.17	0.26	7.6	3.7	0.077
	Maximum	4.1	4.26	3.5	3.6	0.60	0.651	2.87	2.13	2.75	1.065	0.89	13.0	6.0	2.82
	Median	1.19	2.82	1.76	0.755	0.284	0.236	1.13	0.85	1.125	3.1	0.63*	9.35	4.6	0.734
Upstream site	Minimum		1.56	0.11	0.025	0.019	0.039	0.87			0.7	0.01	5.7	4.3	0.005
	Maximum		3.20	3.20	0.490	0.451	1.40	3.16			2.8	0.14	9.7	6.1	0.394
	Median		2.31	1.62	0.120	0.198	0.383	2.53	0.13**		1.35	0.05*	7.3	5.3	0.059
Guideline value		0.444 mg/L (ANZECC trigger value for ecosystem protection in lowland rivers)
Reference site values		0.081 mg/L (median for predominantly natural catchment sites across New Zealand; 1996–2002 data set) 0.55 mg/L (median for lowland predominantly pastoral catchment sites across New Zealand; 1996–2002 data set) (reported in Scarsbrook, 2008)

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are mg/L unless otherwise stated.
* Averages (not medians).
** Average from only two samples (0.1 mg/L and 0.15 mg/L).

Table A2-E: Soluble inorganic nitrogen (SIN)

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006–2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~68	12	56	12	12	12	12	~25 u/s 7 d/s
Downstream site	Minimum	0.041	1.621	0.791	0.037	0.064	0.018	0.582	0.13	0.139	0.175	0.260	7.624	3.738	0.097
	Maximum	6.990	4.419	3.815	3.730	1.169	1.031	2.88	2.16	2.820	3.21	0.890	13.010	6.019	3.780
	Median	2.212	2.846	1.782	0.775	0.388	0.276	1.135	0.860	1.135	1.098	0.630	9.374	4.627	0.824*
Upstream site	Minimum	SIN not derived for upstream sites
	Maximum
	Median
Guideline value		< 0.295 mg/L (NZ Periphyton Guideline (Biggs, 2000)) for 20-day accrual period

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results. Data has been derived (as NOx-N + NH4) for some catchments and is actual reported SIN values for others.

Notes:
All units are mg/L unless otherwise stated.
* Averages/means (not medians).
** Average from only two samples (0.11 mg/L and 0.16 mg/L).

Table A2-F: Total phosphorus

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006–2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~68	12	58	12	12	12	12	24 u/s 5 d/s
Downstream site	Minimum	0.068	0.064	0.031	0.024	0.033	0.038	0.002	0.011	0.014	0.011	0.002	0.008	0.018	0.114
	Maximum	0.251	0.392	0.699	0.22	0.251	0.251	0.092	0.289	0.23	0.053	0.022	0.029	0.045	0.690
	Median	0.174	0.111	0.120	0.05	0.102	0.108	0.02	0.025	0.041	0.034	0.022*	0.019	0.025	0.281
Upstream site	Minimum		0.870	0.029	0.021	0.018	0.076	0.006			0.01	0.006	0.009	0.004	0.046
	Maximum		0.081	0.870	0.089	0.442	10.1	0.125			0.033	0.021	13.0	0.028	0.082
	Median		0.129	0.160	0.037	0.057	0.22	0.022	0.0095**		0.017	0.014*	0.029	0.013	0.061
Guideline value		0.033 mg/L (ANZECC trigger value for ecosystem protection in lowland rivers)

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are mg/L unless otherwise stated.
* Averages (not medians).
** Average from only two samples (0.01 mg/L and 0.009 mg/L).

Table A2-G: Dissolved reactive phosphorus

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006–2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~68	12	57	12	12	12	12	11
Downstream site	Minimum	0.010	0.016	0.001	0.010	0.016	0.007	0.002	0.007	0.005	0.002	0.008	0.001	0.003	0.011
	Maximum	0.177	0.107	0.560	0.130	0.336	0.149	0.033	0.027	0.054	0.016	0.015	0.019	0.027	0.245
	Median	0.089	0.032	0.075	0.023	0.059	0.048	0.011	0.017	0.026	0.007	0.011*	0.008	0.015	0.037
Upstream site	Minimum		0.033	0.002	0.003	0.011	0.025	0.002			0.002	0.009	0.001	0.002
	Maximum		0.318	0.670	0.054	0.261	5.12	0.093			0.006	0.014	0.029	0.019
	Median		0.071	0.098	0.022	0.039	0.102	0.018	0.005**		0.003	0.01*	0.013	0.008
Guideline value		0.01 mg/L (ANZECC trigger value for ecosystem protection in lowland rivers) < 0.026 mg/L (NZ Periphyton Guidelines (Biggs, 2000)) for 20-day accrual period
Reference site value		0.008 mg/L (median for predominantly natural catchment sites across New Zealand; 1996–2002 data set) 0.016 mg/L (median for lowland predominantly pastoral catchment sites across New Zealand; 1996–2002 data set) (reported in Scarsbrook, 2008)

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are mg/L unless otherwise stated.
* Averages (not medians).
** Average from only two samples (0.008 mg/L and 0.0025 mg/L).

Table A2-H: Ammoniacal nitrogen

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006–2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~66	12	58	12	12	12	12	23 u/s 7 d/s
Downstream site	Minimum	0.009	0.001	0.001	0.001	0.015	0.010	0.002	0.0025	0.003	0.005	< 0.01	0.003	0.003	0.02
	Maximum	2.800	0.159	0.315	0.13	0.498	0.380	0.01	0.07	0.07	0.11	0.01	0.03	0.041	0.96
	Median	0.022	0.026	0.022	0.02	0.104	0.040	0.005	0.01	0.01	0.033	< 0.01 *	0.019	0.021	0.09*
Upstream site	Minimum		0.011	0.005	0.001	0.001		0.005			0.011	< 0.01	0.006	0.003	0.01
	Maximum		0.756	1.20	0.018	0.841		0.043			0.11	< 0.01	0.058	0.023	0.02
	Median		0.066	0.082	0.012	0.136		0.01	0.005		0.022	< 0.01 *	0.022	0.015	0.02*
Guideline value		0.4–0.9 mg/L (based on range of water temperature and pH data and the ANZECC toxicant trigger values for 95 per cent ecosystem protection)
Reference site value		0.008 mg/L (median for predominantly natural catchment sites across New Zealand) (reported in Scarsbrook, 2008)

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are mg/L unless otherwise stated.
* Averages or means (not medians).

Table A2-I: pH

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wellington	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wellington	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006		2006– 2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006– 2007	2006– 2007
Sample number		58	~74	95	77		26	~66	12	58	12	12	12	12
Downstream site	Minimum		7.3	7.1	6.6		6.6	6.6	6.9	5.1	7.0		6.4	6.8
	Maximum		7.9	8.9	9.0		7.4	7.6	7.9	8.6	7.8		7.2	8.0
	Median		7.7	7.9	7.3		7.0	7.2	7.4	7.0	7.4		7.1	7.5

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Table A2-J: Dissolved oxygen

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006– 2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~68	12	54	12 1,632*	12	12	12	22 u/s 7 d/s
Downstream site	Minimum	25.5	83.9	49.7	70.7	73.5	3.1	69.1	8.40	71.4 5.8	80 0.25	81.4 8.21	7.24	8.24	5.4
	Maximum	166	109	121	127	110	10.7	126.3	17.38	114 12.39	121 12.44	104 12.06	12.41	11.59	14.8
	Median	80.7	96.5	87.4	92.5	90.6	7.8	91.5	11.05	93 9.6	99 5.35		9.3	10.62	11.2
Upstream site	Minimum		85.3	58.2	74.8	78.8		57.6			83 2	81.2 8.7	5.43	5.66	8.0
	Maximum		104.9	113.5	104.8	100.3		111.5			120 19.25	100.1 11.46	12.06	9.98	11.8
	Median		95.3	88.5	87.7	95.0		74.65			97 8.67		9.51	8.14	9.8
Guideline value		> 80% saturation (RMA 1991, Schedule 3 – Water being managed for aquatic purposes)

Upper numbers (standard font) are % saturation measurements and lower numbers (in italics) are concentrations (mg/L)

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
Units are % saturation for all values in standard font and mg/L for all values in italics.
* 15-minute interval data from 26 January 2006 to 12 February 2006.

Table A2-K: Water temperature

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006– 2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2002– 2006
Sample number		58	~74	95	77	43	26	~69	12	56	4,368*	12			25 u/s 6 d/s
Downstream site	Minimum	8.5	5.6	4.1	3.3	2.4	8.8	6.5	7.1	6.18	12.94	10.2	7.4	8.3	2.2
	Maximum	22.5	17.8	18.5	19.2	22.2	19.8	15	21.2	25.7	24.94	18.7	17.2	18.1	23.3
	Median	16.0	12.6	10.9	9.8	10.9	14.8	10.4	13.01	13.8	18.46		12.5	13.4	9.5
Upstream site	Minimum		6.8	4.7	3.3	2.1	8.9	9.5			11.05	8.0	7.9	8.3	7.4
	Maximum		14.2	19.1	12.4	20.8	15.0	14			26.35	16.9	18.7	14.6	21.0
	Median		11.2	11.2	8.0	9.8	20.6	11			18.2		12.35	12	11.52

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are degrees Celsius.
* 30-minute data from 10 December 2006 to 10 March 2007.

Table A2-L: Electrical conductivity

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006– 2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007
Sample number		58	~74	95	77	43	26	~69	12	55	12	12
Downstream site	Minimum	119	233	132	103	37	111	51	105	73	104	64	250	210
	Maximum	387	311	338	215	81	500	94.4	1,418	188	137	81	330	280
	Median	188	271	190	161	71	284	73.1	143.5	115	119	66*	280	230
Upstream site	Minimum		171	147	70	34.9		76.6			95	56	200	200
	Maximum		226	330	98	82.0		109.6			131	106	270	260
	Median		206	244	87	69.6		94.5	57.5		109	77*	225	215

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier catchment results.

Notes:
All units are microS/cm.
* Averages (not medians).

Table A2-M: Suspended sediments

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006– 2007	2000–2008	2006– 2007	2002– 2006	2006–2007	2006– 2007	2006–2007	2006–2007	2003
Sample number		58	~74	95	77	43	~26	~68	12	58	12	12	12	12	17
Downstream site	Minimum	0.3	6.0	1.4	1.5	0.3	1	1.5	1.5	1.5	1.0	< 3	1.1	2.5	5.0
	Maximum	120	98.0	175.0	36.0	110	71	293	17	155	6.8	80	5.8	12.0	26.0
	Median	3.0	20.5	7.2	4.2	4.6	4	5	4	1.5	2.0		2.6	4.75	11.0
Upstream site	Minimum		15.0	2.2	4.4	0.3	1	0.5			1.0	< 3	1.0	0.25
	Maximum		160	160	36	95	105	72			6.0	6	4.9	3.7
	Median		21.0	24.8	7.4	2.0	3	1.5	1.5*		2.0		1.4	0.95

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are mg/L.
* Average from only two samples (both 1.5 mg/L).

Table A2-N: Turbidity

		Tier 1 catchments					Tier 2 catchments
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Canterbury		Washpool Otago
		Toenepi Waikato	Waiokura Taranaki	Waikakahi Canterbury	Bog Burn Southland	Inchbonnie West Coast	Puwera Northland	Taharua Hawke’s Bay	Mangapapa Manawatu	Enaki Wairarapa	Powell Tasman	Rai Marlborough	Rhodes	Petrie	Washpool Otago
Sample period		2001–2006	2001–2006	2001– 2006	2001–2006	2004– 2006	2006– 2007	2000–2008	2006– 2007	2002– 2006		2006– 2007	2006–2007	2006–2007	2002–2006
Sample number		58	~74	95	77	43	~26	~62	12	58		12			22 u/s 7 d/s
Downstream site	Minimum	1.1	4.5	1.2	2.6	1.5	1.5	0.31	0.09	0.25		0.4	0.4	0.4	2.6
	Maximum	48	35	30	34	101	16.1	8.53	137	95		6.24	1.5	2.5	82.1
	Median	2.6	11	4.6	6.2	4	6.9	1.26	1.61	2.55		1.81	0.6	1.15	14.5
Upstream site	Minimum		5.1	0.6	7.6	0.6	0.7	0.13				0.53	0.3	0.2	2.2
	Maximum		70	60	34	75.2	79	3.67				4.76	1.8	0.8	6.9
	Median		8.4	11.1	11.0	2.6	4.5	0.44	0.5*			1.67	0.5	0.4	5.6

Source: Wilcock, Monaghan et al, 2007 for Tier 1 catchment results and regional council monitoring reports for Tier 2 catchment results.

Notes:
All units are nephelometric turbidity units (NTU).
* Average (not median).

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