River and stream water quality and ecology - Greater Wellington ...

River and stream water quality and ecology in the Wellington region: State and trends
Appendix 6: Supplementary water quality state data
Summary of selected water quality data for 55 RSoE sites sampled monthly between July
2008 and June 2011. Note that 1.7 mg/L nitrate nitrogen is the chronic aquatic toxicity TV
recommended by Hickey and Martin (2009)
Site
No.
Site name
Dissolved oxygen
(mg/L)
Nitrate nitrogen
(mg/L)
Total Kjeldahl nitrogen
(mg/L)
Median Min Max n Median Min Max n %n>1.7 Median Min Max n
RS02 Mangapouri S at Bennetts Rd 7.2 3.0 11.1 35 2.450 0.590 3.900 36 69.4 0.525 0.260 1.040 36
RS03 Waitohu S at Forest Pk 11.1 9.7 14.8 34 0.023 0.001 0.066 35 0 0.050 0.050 0.440 35
RS04 Waitohu S at Norfolk Cres 9.1 6.8 13.9 35 0.500 0.057 1.300 36 0 0.315 0.210 0.510 36
RS05 Otaki R at Pukehinau 11.3 9.2 14.5 35 0.033 0.001 2.800 36 2.8 0.050 0.050 0.230 36
RS06 Otaki R at Mouth 11.1 8.7 14.1 35 0.046 0.001 0.130 36 0 0.050 0.050 0.150 36
RS07 Mangaone S at Sims Rd Br 8.3 4.6 10.9 35 1.910 0.530 3.900 36 66.7 0.505 0.340 0.930 36
RS08 Ngarara S at Field Way 5.8 0.8 8.4 35 0.108 0.001 8.800 36 2.8 0.780 0.140 1.400 36
RS09 Waikanae R at Mangaone Walkway 11.0 9.1 12.5 35 0.099 0.031 0.173 36 0 0.050 0.050 0.260 36
RS10 Waikanae R at Greenaway Rd 10.4 8.8 12.7 35 0.205 0.031 0.860 36 0 0.050 0.050 0.750 36
RS11 Whareroa S at Waterfall Rd 10.5 7.8 12.9 35 0.335 0.120 0.850 36 0 0.205 0.100 0.890 36
RS12 Whareroa S at QE Park 7.7 3.3 10.5 35 0.365 0.058 1.500 36 0 0.655 0.330 1.360 36
RS13 Horokiri S at Snodgrass 11.3 9.1 13.3 35 0.370 0.007 1.100 36 0 0.160 0.050 0.400 36
RS14 Pauatahanui S at Elmwood Br 10.6 7.1 13.6 35 0.210 0.001 0.900 36 0 0.230 0.050 0.810 36
RS15 Porirua S at Glenside 11.9 9.1 14.1 35 0.965 0.290 2.200 36 8.3 0.245 0.110 1.450 36
RS16 Porirua S at Wall Park (Milk Depot) 11.5 9.2 14.0 35 0.950 0.330 4.400 36 11.1 0.270 0.140 1.100 36
RS17 Makara S at Kennels 10.7 8.5 13.9 35 0.285 0.004 1.400 36 0 0.290 0.130 1.570 36
RS18 Karori S at Makara Peak 11.1 8.6 12.6 35 1.280 0.350 4.300 36 5.6 0.210 0.146 0.640 36
RS19 Kaiwharawhara S at Ngaio Gorge 11.1 8.9 12.7 35 1.100 0.001 2.300 36 2.8 0.265 0.160 0.520 36
RS20 Hutt R at Te Marua Intake Site 11.3 9.5 13.3 35 0.081 0.025 0.154 36 0 0.050 0.050 0.210 36
RS21 Hutt R opp. Manor Park G.C. 10.6 8.3 13.1 35 0.210 0.049 0.890 36 0 0.115 0.050 0.480 36
RS22 Hutt R at Boulcott 10.6 8.1 12.9 35 0.175 0.044 1.500 36 0 0.050 0.050 0.420 36
RS23 Pakuratahi R 50m d/s Farm Ck 10.8 9.3 13.4 35 0.225 0.076 0.410 36 0 0.050 0.050 0.350 36
RS24 Mangaroa R at Te Marua 10.8 9.6 12.5 34 0.465 0.250 0.800 36 0 0.170 0.050 0.840 36
RS25 Akatarawa R at Hutt R confl. 10.8 9.6 13.0 35 0.090 0.002 0.480 36 0 0.050 0.050 0.260 36
RS26 Whakatikei R at Riverstone 11.0 9.6 12.6 35 0.077 0.016 0.310 36 0 0.050 0.050 0.190 36
RS27 Waiwhetu S at Wainui Hill Br 8.5 4.3 14.4 35 0.455 0.075 1.100 36 0 0.285 0.050 0.830 36
RS28 Wainuiomata R at Manuka Track 11.4 9.5 12.6 34 0.069 0.006 0.230 35 0 0.050 0.050 0.380 35
RS29 Wainuiomata R u/s of White Br 11.0 7.9 12.9 35 0.205 0.001 0.610 36 0 0.120 0.050 0.740 36
RS30 Orongorongo R at Orongorongo Stn 10.4 6.4 12.4 35 0.037 0.001 0.079 36 0 0.050 0.050 1.380 36
RS31 Ruamahanga R at McLays 10.9 8.4 105.0 35 0.022 0.001 0.045 36 0 0.050 0.050 0.190 36
RS32 Ruamahanga R at Te Ore Ore 10.1 8.3 12.4 35 0.355 0.013 0.940 36 0 0.145 0.050 0.720 36
RS33 Ruamahanga R at Gladstone Br 10.1 8.1 14.5 35 0.385 0.022 0.970 36 0 0.175 0.050 0.780 36
RS34 Ruamahanga R at Pukio 10.1 7.3 12.0 35 0.345 0.001 0.930 36 0 0.195 0.050 1.600 36
RS35 Mataikona Trib at Sugar Loaf Rd 10.9 8.6 12.9 35 0.014 0.001 0.179 36 0 0.125 0.050 1.850 36
RS36 Taueru R at Castlehill 10.9 8.4 12.2 35 0.073 0.001 0.440 36 0 0.295 0.050 2.600 36
RS37 Taueru R at Gladstone 10.1 6.7 16.4 35 0.600 0.190 1.900 36 5.6 0.405 0.190 0.860 36
RS38 Kopuaranga R at Stewarts 9.9 6.7 14.1 35 0.950 0.450 1.360 36 0 0.350 0.170 1.600 36
RS39 Whangaehu R 250m u/s confl. 8.9 4.2 13.8 35 0.795 0.210 2.900 36 8.3 0.550 0.180 2.200 36
RS40 Waipoua R at Colombo Rd Br 10.4 7.2 12.6 35 0.905 0.210 2.600 36 11.1 0.170 0.050 0.620 36
RS41 Waingawa R at South Rd 10.5 6.9 13.1 35 0.054 0.014 0.400 36 0 0.050 0.050 0.240 36
RS42 Whareama R at Gauge 10.2 7.5 12.1 35 0.004 0.001 0.680 36 0 0.395 0.250 2.000 36
RS43 Motuwaireka S at Headwaters 11.1 6.6 13.0 34 0.026 0.003 0.410 35 0 0.050 0.050 0.130 35
RS44 Totara S at Stronvar 10.6 5.6 104.0 34 0.010 0.001 0.200 35 0 0.050 0.050 0.910 35
RS45 Parkvale Trib at Lowes Reserve 7.4 6.1 10.5 28 4.300 2.400 6.800 28 77.8 0.410 0.230 0.830 28
RS46 Parkvale S at Weir 10.2 7.3 14.1 35 1.245 0.001 4.300 36 41.7 0.590 0.320 1.900 36
RS47 Waiohine R at Gorge 11.4 9.5 14.6 35 0.030 0.001 0.097 36 0 0.050 0.050 0.270 36
RS48 Waiohine R at Bicknells 10.3 8.9 13.6 35 0.285 0.008 1.100 36 0 0.120 0.050 0.330 36
RS49 Beef Ck at Headwaters 10.9 8.5 14.3 35 0.019 0.001 0.058 36 0 0.050 0.050 0.300 36
RS50 Mangatarere S at SH 2 10.2 7.3 13.1 35 1.200 0.490 2.100 36 13.9 0.355 0.200 0.940 36
RS51 Huangarua R at Ponatahi Br 11.0 7.7 15.5 35 0.235 0.001 0.720 36 0 0.260 0.050 0.970 36
RS52 Tauanui R at Whakatomotomo Rd 10.6 8.6 12.9 34 0.009 0.001 0.046 35 0 0.050 0.050 0.230 35
RS53 Awhea R at Tora Rd 10.9 7.0 13.6 35 0.027 0.001 0.350 36 0 0.220 0.050 1.020 36
RS54 Coles Ck Trib at Lagoon Hill Rd 9.9 6.6 12.8 27 0.005 0.001 0.052 28 0 0.200 0.120 0.300 28
RS55 Tauherenikau R at Websters 10.3 8.0 12.8 35 0.028 0.001 0.330 36 0 0.050 0.050 0.240 36
RS56 Waiorongomai R at Forest Pk 10.7 7.6 13.7 35 0.012 0.001 0.070 36 0 0.050 0.050 0.450 36
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