Appendix 5: Macroinvertebrate and Stream Ecological Valuation Data Boffa Miskell Ltd | Waihi North Project: Freshwater Ecological Assessment | Waiharakeke Stream Table 5-1: SEV attribute values for Waiharakeke Stream tributaries Function category Function Waiharakeke Stream tributary Waiharakeke Stream right branch tributary Hydraulic Natural flow regime 0.97 1.00 Floodplain effectiveness 0.92 1.00 Connectivity to natural species migrations 1.00 1.00 Natural connectivity to groundwater 0.99 1.00 Biogeochemical Water temperature control 0.80 0.74 Dissolved oxygen levels maintained 1.00 1.00 Organic matter input 1.00 1.00 In-stream particle retention 0.98 1.00 Decontamination of pollutants 0.86 0.90 Habitat provision Fish spawning habitat 1.00 1.00 Habitat for aquatic fauna 0.98 0.96 Biodiversity provision Fish fauna intact 1.00 1.00 Invertebrate fauna intact 0.89 0.89 Riparian vegetation intact 0.81 0.90 SEV score 0.942 0.956 Mataura Stream unnamed Tributary 2 Table 5-2: SEV attribute values for Mataura Stream unnamed tributary (tributary 2). Function category Function Unnamed tributary Hydraulic Natural flow regime 0.75 Floodplain effectiveness 0.29 Connectivity to natural species migrations 1.00 Natural connectivity to groundwater 0.83 Biogeochemical Water temperature control 0.54 Dissolved oxygen levels maintained 0.68 Organic matter input 0.40 In-stream particle retention 0.70 Decontamination of pollutants 0.61 Habitat provision Fish spawning habitat 0.63 Habitat for aquatic fauna 0.66 Biodiversity provision Fish fauna intact 0.33 Invertebrate fauna intact 0.74 Riparian vegetation intact 0.16 SEV score 0.594
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