Interim turbidity water quality objectives for dry season neap tide conditions in Darwin Harbour
Southgate, Naomi Cassilles; Fortune, Julia; Northern Territory, Department of Environment and Natural Resources. Water Resources Division
E-Publications; E-Books; PublicationNT; 5/2018
This report develops an interim WQO for surface turbidity (0-0.5 m) restricted to neap tides (1½ hours either side of neap high tide) with an approximate 3 m tidal range. The interim status means that they have not been formally gazetted under the Water Act, which will take place when other water quality objectives are developed for neap tide conditions.
This research was funded by the INPEX-operated Ichthys LNG Project. We acknowledge the assistance and field efforts of current and previous Aquatic Health Unit technical staff, and editorial input from Simon Townsend and Julia Schult of the Aquatic Health Unit
1. Summary -- 2. Introduction -- 2.1 Turbidity in the Darwin Harbour environment -- 2.2 Developing Water Quality Objectives -- 2.3 Estuarine Categories -- 2.4 Report Objective -- 3. Methods -- 3.1 ANZECC approach -- 3.2 Data collation and review -- 3.3.1 Discrete Sampling Data -- 3.3.2 Flow-cell Monitoring Data -- 4. Results -- 4.1 Data summary -- 4.2 Interim Turbidity Water Quality Objective-- 5. Limitations of the Turbidity Water Quality Objective -- References -- APPENDIX A: TURBIDITY VARIABILITY BETWEEN SURFACE AND AT DEPTH -- APPENDIX B: Plots of FCM and Discrete data distributions -- APPENDIX C: Frequency distribution plots with 20th/80th percentile for three estuarine categories.
Turbidity Water Quality; Marine
Northern Territory Government
25 pages : colour illustrations and maps ; 30 cm.
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