Appendix 2. Number of regional council and NRWQN sites with significant trends in water quality analytes for 1998–2007 using estimated flows. Significance level P < 0.05.

Table A2.1: Number of sites with significant trends for clarity for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 4 1 0 0 0 1
Bay of Plenty 12 3 0 0 0 0
Canterbury 10 0 0 0 0 3
Southland 36 3 0 0 0 3
Waikato 106 47 0 0 0 0
Gisborne 3 1 0 0 0 0
Wellington 38 7 0 0 0 4
Hawke’s Bay 29 5 0 0 0 3
Manawatu-Wanganui 15 2 0 0 0 0
Marlborough 2 0 0 0 0 1
Northland 12 1 1 0 0 3
Otago 8 0 0 0 0 3
Tasman 4 0 0 0 0 3
Taranaki 11 4 0 0 0 0
West Coast 4 0 0 0 0 1
Total 294 74 1 0 0 25
Table A2.2: Number of sites with significant trends for conductivity for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 25 6 2 0 1 0
Bay of Plenty 16 0 3 0 3 0
Canterbury 41 0 0 0 4 4
Southland 36 0 0 0 2 7
Waikato 112 1 6 0 24 8
Gisborne 15 5 1 0 0 0
Wellington 25 6 5 0 0 0
Hawke’s Bay 36 1 2 0 2 0
Manawatu-Wanganui 15 0 2 0 3 2
Marlborough 2 0 0 0 1 1
Northland 12 0 0 0 2 2
Otago 8 0 0 0 0 0
Tasman 5 0 0 0 2 1
Taranaki 11 0 2 0 2 1
West Coast 4 0 1 0 1 0
Total 363 19 24 0 47 26
Table A2.3: Number of sites with significant trends for DRP for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 25 3 0 3 2 1
Bay of Plenty 16 1 1 2 0 1
Canterbury 51 6 1 1 0 1
Southland 32 15 1 3 0 1
Waikato 112 11 1 8 8 15
Gisborne 3 0 0 0 0 0
Wellington 38 10 1 0 0 11
Hawke’s Bay 37 1 1 0 0 7
Manawatu-Wanganui 15 5 0 0 0 4
Marlborough 2 1 0 0 0 0
Northland 12 7 0 0 0 0
Otago 42 2 1 1 0 25
Tasman 4 1 1 0 0 0
Taranaki 11 0 0 1 0 2
West Coast 4 1 1 0 0 0
Total 404 64 9 19 10 68
Table A2.4: Number of sites with significant trends for E. coli for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Bay of Plenty 10 0 0 0 0 3
Southland 23 5 0 0 0 0
Waikato 79 5 0 0 0 4
Northland 7 0 0 0 0 1
Otago 25 3 0 0 0 0
Tasman 2 0 0 0 0 0
Taranaki 8 1 0 0 0 0
Total 154 14 0 0 0 8
Table A2.5: Number of sites with significant trends for FC for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 16 0 0 0 0 1
Bay of Plenty 10 0 0 0 0 2
Canterbury 2 0 0 0 0 0
Southland 23 6 0 0 0 0
Waikato 79 7 0 0 0 2
Gisborne 12 0 0 0 0 0
Wellington 32 8 0 0 0 7
Hawke’s Bay 31 10 0 0 0 1
Northland 1 0 0 0 0 0
Otago 34 8 0 0 0 0
Tasman 4 0 0 0 0 0
Taranaki 8 1 0 0 0 0
Total 252 40 0 0 0 13
Table A2.6: Number of sites with significant trends for NH4-N for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 25 6 0 0 0 1
Bay of Plenty 16 2 0 0 0 1
Canterbury 51 18 0 0 0 0
Southland 34 4 0 1 0 2
Waikato 112 9 0 4 0 11
Gisborne 3 0 0 0 0 0
Wellington 38 17 0 3 0 7
Hawke’s Bay 37 4 0 0 0 1
Manawatu-Wanganui 11 5 0 0 0 0
Marlborough 2 2 0 0 0 0
Northland 12 10 0 0 0 0
Otago 41 9 0 0 0 0
Tasman 4 3 0 0 0 0
Taranaki 11 0 1 0 0 2
West Coast 5 3 0 0 0 0
Total 402 92 1 8 0 25
Table A2.7: Number of sites with significant trends for NO3-N for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 25 14 0 0 0 0
Bay of Plenty 16 0 0 0 0 7
Canterbury 51 5 0 0 0 8
Southland 34 2 0 0 0 4
Waikato 112 8 0 0 1 41
Gisborne 3 0 0 0 0 1
Wellington 37 17 0 0 0 0
Hawke’s Bay 37 2 0 0 0 5
Manawatu-Wanganui 15 3 0 1 0 0
Marlborough 2 0 0 0 0 0
Northland 12 9 0 0 0 0
Otago 42 9 1 0 0 2
Tasman 4 0 0 0 0 1
Taranaki 11 2 0 0 0 1
West Coast 4 0 0 0 0 2
Total 405 71 1 1 1 72
Table A2.8: Number of sites with significant trends for SS for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 23 5 0 0 0 1
Bay of Plenty 10 1 0 0 0 1
Canterbury 33 5 0 0 0 0
Gisborne 12 1 0 0 0 0
Hawke’s Bay 31 0 0 0 0 3
Manawatu-Wanganui 7 1 0 0 0 0
Otago 33 3 0 0 0 0
Total 149 16 0 0 0 5
Table A2.9: Number of sites with significant trends for TN for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 10 0 0 0 0 0
Bay of Plenty 10 0 0 0 0 5
Canterbury 51 7 0 0 0 5
Southland 34 6 0 0 0 3
Waikato 112 6 1 0 0 50
Gisborne 3 0 0 0 0 3
Wellington 5 0 0 0 0 0
Hawke’s Bay 37 1 0 0 0 6
Manawatu-Wanganui 7 0 0 0 0 1
Marlborough 2 0 0 0 0 0
Northland 12 5 0 0 0 0
Otago 41 5 0 0 0 4
Tasman 3 1 0 0 0 1
Taranaki 11 5 0 0 0 0
West Coast 4 0 0 0 0 1
Total 342 36 1 0 0 79
Table A2.10: Number of sites with significant trends for TP for 1998–2007
Region Total number of sites Number of sites with meaningful decrease Number of sites with significant decrease Number of sites with stable trend Number of sites with significant increase Number of sites with meaningful increase
Auckland 25 6 0 0 2 4
Bay of Plenty 15 0 0 1 0 2
Canterbury 51 4 0 1 0 1
Southland 32 2 1 0 0 0
Waikato 112 7 1 3 2 22
Gisborne 3 0 0 1 0 0
Wellington 5 1 0 0 0 0
Hawke’s Bay 37 0 0 0 0 4
Manawatu-Wanganui 7 0 0 0 0 0
Marlborough 2 0 0 0 0 0
Northland 12 4 0 0 1 0
Otago 42 0 0 0 0 6
Tasman 3 0 0 1 0 0
Taranaki 11 0 0 0 1 3
West Coast 4 1 0 0 0 0
Total 361 25 2 7 6 42

 

|