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Conductivity @ 25°C mS/m@ - - - - - - Nitrate/nitrite nitrogen g/m³ N - - <0.01 1.89 0.88 3 pH pH - - 6.7 8.5 7.3 27 Temperature Deg.C - - 4.8 18.3 13.7 26 Total nitrogen g/m³ N - - 8.3 12.1 11.3 3 Turbidity NTU - - 1.5 69 3.9 11 Un-ionised ammonia g/m³ - - 0.00005 0.04877 0.00215 16 Zinc Dissolved g/m³ - - <0.005 0.63 0.009 27 * samples not collected as pond was dry The autumn samples were collected after heavy rainfall in the 2013-2014, 2014-2015 and 2015-2016 years

Annual report 2016-2017

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Created: 04/1/2018

This is a direct reflection of the high rainfall experienced over this time. Water temperatures began to return to normal in March 2017, being similar to the average for the last four months of the reported period. The highest exceedances were recorded on 20 October 2016 (Egmont Village (3.3 ˚C), Hydro Road (3.5 ˚C), Rimu Street (3.1 ˚C) (Figure 9). Figure 7 Water temperature monitoring sites (W1, W5, W7) in the lower Waiwhakaiho River catchment page 18 When

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