Gosford City Council Historical Water Quality Review & Analysis

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FUTURE DIRECTIONS FOR WATER QUALITY / ENVIRONMENTAL HEALTH MONITORING 4-22 Figure 4.11 Detailed Locations of Monitoring Sites D:\R.N0754.002.01.DOC 7/11/03 16:11
FUTURE DIRECTIONS FOR WATER QUALITY / ENVIRONMENTAL HEALTH MONITORING 4-23 4.6.1 Recommendations for a Gosford Environmental Health Indicator Based on the Coastal CRC EHMP template, an appropriate Environmental Health Indicator for the Gosford water would incorporate the results of both biotic and abiotic assessments. As a minimum, it is recommended that the following be integrated into an Environmental Health Indicator: • Water Quality (as defined by Compound Water Quality Index or associated scorecards); • Seagrass depth assessment (as and when the opportunity arises to incorporate seagrass monitoring into routine Council environmental assessment programs); and • Benthic macroinvertebrate assessment (based on the initial Biodiversity Study by University of Newcastle [Dr Bill Gladstone], and assuming that repeatable assessments could be carried out at least annually as part of Council’s future environmental monitoring programs). In the first instance, however, it is likely that the only measure of Environmental Health will be the Compound Water Quality Index, as described in Section 3.1.3. The limitation of assessing only abiotic parameters, needs to be recognised though. With regard to the Compound Water Quality Index, or more specifically the Water Quality Scorecard, objectives can be set for different locations based on an understanding of the estuarine processes throughout the Gosford waterways. Recommended targets for future water quality scores are shown in Table 4.3. Table 4.3 Recommended Water Quality Scores for different sections of the Gosford Waterways Location Water Quality Score Additional Objectives Lower Brisbane Water (e.g. Booker Bay) 10/10 Upper Brisbane Water (e.g. Koolewong) 9/10 Brisbane Water tributaries 8/10 Ammonia < 0/01 mg/L NO x < 0.02 mg/L Coastal Lagoons 8/10 Chlorophyll < 2 µg/L Recommendations regarding seagrasses and benthic macroinvertebrates, along with guidelines for amalgamating results into one ‘Environmental Health Index’ would be determined following baseline monitoring of the biological components. D:\R.N0754.002.01.DOC 7/11/03 16:11
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Gosford City Council Historical Wat
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CONTENTS I CONTENTS Contents List o
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LIST OF FIGURES III 4.4 Outcomes fr
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LIST OF TABLES V Table 3.23 Water Q
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INTRODUCTION 1-2 locations in Brisb
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INTRODUCTION 1-4 aquatic ecosystems
Page 13 and 14: INTRODUCTION 1-6 Default trigger va
Page 15 and 16: GWQ: A DATA MANAGEMENT AND ASSESSME
Page 23 and 24: RESULTS OF WATER QUALITY DATA ANALY
Page 43 and 44: FUTURE DIRECTIONS FOR WATER QUALITY
Page 63: FUTURE DIRECTIONS FOR WATER QUALITY
Page 67 and 68: MHL DATASONDE RESULTS: AVOCA LAGOON
Page 69: MHL DATASONDE RESULTS: KOOLEWONG C-
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Gosford City Council Historical Water Quality Review & Analysis

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