Supporting Technical Assessments

GHD | Oceana Gold (New Zealand) Ltd | 12552081 | Waihi North 34 Table F.1 Summary of Gladstone Stream Flow Gauging results (Opus, 2019) Table F.2 Summary of NRS Stream Flow Gauging results (Opus, 2019) Table F.3 Summary of TSF3 Stream Flow Gauging Results (Opus, 2019) Water Body February 2019 Water Level (mRL) Flow (L/s) 24/01/19 07/02/19 21/02/19 07/03/19 21/03/19 04/04/19 19/06/19 19/09/19 22/1/20 Tributary TB4 3 m upstream of twin culvert under access road 1087.04 0.017 0 Dry Dry 0 0.05 0.006 2.6 Dry Tributary TB5 - - - Dry Dry Dry Dry 3.5 Dry Ohinemuri River OH11 1085.75 746 501 467 268 / 305.4* 357.5 574.2 438.4 / -* 2759.9 234.8 Ohinemuri River OH6 1084.65 - - - - 367.7 598.5 421.9 2831.7 218.9 * upstream/downstream of water treatment plant discharge Water body Gauging Location Flow (L/s) 24/01/19 07/02/19 21/02/19 07/03/19 21/03/19 04/04/19 19/06/19 19/09/19 22/01/20 TB1 WRSTB 2.5 2.1 1.9 1.8 1.4 2.1 1.8 8.2 1.3 TB1B - - - - 0.53 1.3 0.48 64.0 0.38 TB1F 3.4 3.0 2.6 2.2 2.0 3.2 2.3 70.5 1.6 TB1A 4.9 3.1 2.7 2.0 1.8 3.3 2.2 84.8 1.6 TB1E TB1E Dry Dry Dry Dry Dry Dry Dry - - Water Body Gauging Location Flow (L/s) 24/01/19 07/02/19 21/02/19 06/03/19 20/03/19 03/04/19 18/06/19 16/09/19 21/01/20 Ruahorehore Tributary RU10 - - - 0.38 0.15 0.2 0.08 35.9 0 RU6 2.5 1.6 0.8 0.4 0.22 0.7 0.5 40.4 0 Ruahorehore Stream RU14 29.7 19.9 17.6 14.3 12.8 21.3 14.6 173.6 11.1 RU13 36.5 17.9 15.7 12.7 11.0 20.0 12.9 170.7 7.5 RU11 34.7 13.7 15.9 13.9 12.9 19.6 15.4 - 7.1 RU12 30.7 21.4 15.6 14.2 14.0 21.8 14.3 205.9 7.0 RU7 29.8 14.8 15.2 12.2 10.4 20.4 15.5 219.4 8.5 RU5 - - - 13.5 12.3 24.1 16.50 273.8 6.3 Shed Spring RU15 - - 31.7 37.5 38.1 55.2 39.9 446.3 27.3

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