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

River and stream water quality and ecology in the Wellington region: State and trends
Appendix 7: Temporal trend analyses – tabulated results
Physico-chemical and microbiological water quality
The following tables set out the trend results for selected water quality variables. Refer
to Section 4.2 for methods. MASS=Median Annual Sen Slope calculated using the
Seasonal Kendall trend test (performed in NIWA’s TimeTrends software, version 3.20).
Water temperature (°C)
Raw data Flow-adjusted data
Site Site name
Median n MASS p
%
Change
Median n MASS p
%
Change
RS02 Mangapouri S at Bennetts Rd 13.32 60 -0.221 0.358 -1.66 - - - - -
RS03 Waitohu S at Forest Pk 10.12 59 0.138 0.425 1.37 10.04 57 0.035 0.327 0.35
RS04 Waitohu S at Norfolk Cres 13.01 60 -0.181 0.437 -1.39 12.89 58 -0.228 0.606 -1.77
RS05 Otaki R at Pukehinau 10.43 60 -0.341 0.040 -3.27 10.46 60 -0.575 0.000 -5.50
RS06 Otaki R at Mouth 12.05 60 -0.374 0.040 -3.10 12.29 60 -0.510 0.002 -4.15
RS07 Mangaone S at Sims Rd Br 13.12 60 -0.611 0.000 -4.66 13.03 60 -0.647 0.000 -4.97
RS08 Ngarara S at Field Way 14.50 60 -0.272 0.065 -1.88 - - - - -
RS09 Waikanae R at Mangaone Walkway 11.47 60 -0.226 0.119 -1.97 11.20 60 -0.365 0.020 -3.26
RS10 Waikanae R at Greenaway Rd 14.40 60 -0.162 0.434 -1.12 - - - - -
RS11 Whareroa S at Waterfall Rd 11.37 60 -0.398 0.006 -3.50 11.57 57 -0.231 0.029 -1.99
RS12 Whareroa S at QE Park 13.57 60 -0.683 0.000 -5.03 14.41 57 -0.675 0.001 -4.69
RS13 Horokiri S at Snodgrass 13.31 60 -0.819 0.001 -6.15 13.64 59 -0.828 0.003 -6.07
RS14 Pauatahanui S at Elmwood Br 12.75 60 -0.714 0.000 -5.60 13.03 60 -0.659 0.001 -5.06
RS15 Porirua S at Glenside 13.00 60 -0.379 0.104 -2.91 13.28 60 -0.260 0.229 -1.96
RS16 Porirua S at Wall Park (Milk Depot) 13.55 60 -0.618 0.003 -4.56 13.66 60 -0.401 0.009 -2.93
RS17 Makara S at Kennels 13.82 60 -0.113 0.832 -0.82 15.26 60 -0.086 0.724 -0.57
RS18 Karori S at Makara Peak 13.23 60 -0.042 0.724 -0.32 13.67 60 -0.143 0.621 -1.04
RS19 Kaiwharawhara S at Ngaio Gorge 13.27 60 0.003 1.000 0.02 13.31 60 -0.028 0.724 -0.21
RS20 Hutt R at Te Marua Intake Site 10.43 60 -0.023 0.944 -0.22 10.26 60 0.128 0.229 1.25
RS21 Hutt R opp. Manor Park G.C. 13.64 60 0.186 0.104 1.37 13.40 59 0.088 0.718 0.66
RS22 Hutt R at Boulcott 13.10 60 0.087 0.525 0.66 13.11 59 0.021 0.829 0.16
RS23 Pakuratahi R 50m d/s Farm Ck 11.20 60 -0.044 0.943 -0.39 10.81 60 -0.079 0.724 -0.73
RS24 Mangaroa R at Te Marua 12.43 60 0.088 0.525 0.71 12.76 59 0.207 0.220 1.62
RS25 Akatarawa R at Hutt confl. 11.18 60 -0.026 0.777 -0.23 11.25 60 0.050 0.724 0.45
RS26 Whakatikei R at Riverstone 11.15 60 0.193 0.525 1.73 11.11 60 0.254 0.179 2.29
RS27 Waiwhetu S at Wainui Hill Br 14.90 59 -0.360 0.008 -2.42 15.22 59 -0.639 0.005 -4.20
RS28 Wainuiomata R at Manuka Track 10.45 58 -0.128 0.712 -1.23 10.36 57 -0.022 1.000 -0.21
RS29 Wainuiomata R u/s of White Br 13.08 59 -0.328 0.097 -2.51 13.10 59 -0.320 0.279 -2.44
RS30 Orongorongo R at Orongorongo Stn 14.15 59 0.043 0.942 0.30 14.32 53 -0.022 1.000 -0.15
RS31 Ruamahanga R at McLays 9.70 60 0.092 0.525 0.95 9.00 60 0.389 0.077 4.32
RS32 Ruamahanga R at Te Ore Ore 12.90 60 0.238 0.179 1.84 12.91 60 0.623 0.020 4.83
RS33 Ruamahanga R at Gladstone Br 13.92 60 -0.113 0.229 -0.81 13.56 60 0.482 0.138 3.55
RS34 Ruamahanga R at Pukio 12.90 60 0.029 0.724 0.22 12.48 59 0.593 0.012 4.75
RS35 Mataikona Trib at Sugar Loaf Rd 10.44 60 0.256 0.077 2.46 - - - - -
RS36 Taueru R at Castlehill 10.30 60 0.167 0.525 1.62 9.30 60 0.446 0.056 4.79
RS37 Taueru R at Gladstone 14.54 60 -0.231 0.104 -1.59 - - - - -
RS38 Kopuaranga R at Stewarts 12.60 60 -0.053 0.832 -0.42 12.51 60 0.325 0.138 2.60
RS39 Whangaehu R 250m u/s confl. 14.10 60 0.036 0.571 0.26 - - - - -
RS40 Waipoua R at Colombo Rd Br 14.07 60 0.593 0.002 4.22 12.70 52 0.391 0.145 3.08
RS41 Waingawa R at South Rd 13.44 60 0.062 0.777 0.46 12.16 60 -0.181 0.437 -1.49
RS42 Whareama R at Gauge 13.39 60 -0.025 0.832 -0.19 13.50 60 0.278 0.229 2.06
RS43 Motuwaireka S at Headwaters 11.29 59 -0.286 0.279 -2.53 11.18 59 -0.220 0.348 -1.97
RS44 Totara S at Stronvar 13.82 58 -0.101 0.301 -0.73 13.00 58 0.040 0.941 0.31
RS45 Parkvale Trib at Lowes Res. 13.73 47 -0.238 0.047 -1.73 - - - - -
RS46 Parkvale S at Weir 15.66 60 0.049 0.832 0.31 15.42 59 0.047 0.829 0.31
RS47 Waiohine R at Gorge 10.05 60 -0.184 0.138 -1.83 9.42 60 0.146 0.289 1.55
RS48 Waiohine R at Bicknells 13.00 60 -0.210 0.104 -1.62 12.64 60 -0.008 0.944 -0.06
RS49 Beef Ck at Headwaters 10.61 60 -0.361 0.040 -3.41 - - - - -
RS50 Mangatarere S at SH 2 14.10 60 -0.284 0.179 -2.02 14.17 59 -0.083 0.718 -0.59
RS51 Huangarua R at Ponatahi Br 14.69 60 -0.353 0.028 -2.41 - - - - -
RS52 Tauanui R at Whakatomotomo Rd 11.30 59 -0.150 0.427 -1.33 11.05 59 -0.044 0.829 -0.40
RS53 Awhea R at Tora Rd 14.54 60 0.491 0.040 3.38 - - - - -
RS54 Coles Ck Trib at Lagoon Hill Rd 13.07 50 0.046 0.931 0.35 - - - - -
RS55 Tauherenikau R at Websters 13.25 60 -0.487 0.056 -3.67 12.57 60 -0.605 0.056 -4.82
RS56 Waiorongomai R at Forest Pk 12.31 60 -0.302 0.077 -2.45 11.73 60 -0.252 0.289 -2.15
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