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Okehampton Bay Water Quality Monitoring Results August 2017 to December 2019
D e p a r t m e n t o f P r i m a r y I n d u s t r i e s , Pa r k s , Wa t e r a n d E n v i ro n m e n t
April 2020
Publishing Information Citation: EPA Tasmania (2020) Okehampton Bay Water Quality Monitoring Results August 2017 to December 2019, EPA Tasmania, Hobart, Tasmania. Date: April 2020 Enquiries: EPA Tasmania Department of Primary Industries, Parks, Water and Environment GPO Box 1550 Hobart, Tasmania 7001 Telephone: (03) 6165 4599 Email: [email protected] Web: www.epa.tas.gov.au Copyright: © The Crown in the Right of Tasmania Disclaimer: The information provided in this document is provided in good faith. The Crown, its officers, employees and agents do not accept liability however arising, including liability for negligence, for any loss resulting from the use of or reliance upon the information in this document and/or reliance on its availability at any time.
EPA Tasmania, April 2020 3
Table of Contents
Introduction ......................................................................................................................................... 6 1. August 2017 ..................................................................................................................................... 6
1.1 Dissolved oxygen ........................................................................................................................ 6 1.2 Salinity ........................................................................................................................................ 7 1.3 Temperature .............................................................................................................................. 7 1.4 Nutrients .................................................................................................................................... 8
2. September 2017 ............................................................................................................................... 9 2.1 Dissolved oxygen ........................................................................................................................ 9 2.2 Salinity ........................................................................................................................................ 9 2.3 Temperature ............................................................................................................................ 10 2.4 Nutrients .................................................................................................................................. 11
3. October 2017 ................................................................................................................................. 12 3.1 Dissolved oxygen ...................................................................................................................... 12 3.2 Salinity ...................................................................................................................................... 12 3.3 Temperature ............................................................................................................................ 13 3.4 Nutrients .................................................................................................................................. 14
4. November 2017.............................................................................................................................. 15 4.1 Dissolved oxygen ...................................................................................................................... 15 4.2 Salinity ...................................................................................................................................... 15 4.3 Temperature ............................................................................................................................ 16 4.4 Nutrients .................................................................................................................................. 17
5. December 2017 .............................................................................................................................. 18 5.1 Dissolved oxygen ...................................................................................................................... 18 5.3 Temperature ............................................................................................................................ 19 5.4 Nutrients .................................................................................................................................. 20
6. January 2018 .................................................................................................................................. 21 6.1 Dissolved oxygen ...................................................................................................................... 21 6.3 Temperature ............................................................................................................................ 22 6.4 Nutrients .................................................................................................................................. 23
7. February 2018 ................................................................................................................................ 24 7.1 Dissolved oxygen ...................................................................................................................... 24 7.2 Salinity ...................................................................................................................................... 24 7.3 Temperature ............................................................................................................................ 25 7.4 Nutrients .................................................................................................................................. 26
8. March 2018 .................................................................................................................................... 27 8.1 Dissolved oxygen ...................................................................................................................... 27 8.3 Temperature ............................................................................................................................ 28 8.4 Nutrients .................................................................................................................................. 29
9. May 2018........................................................................................................................................ 30 9.1 Dissolved oxygen ...................................................................................................................... 30 9.2 Salinity ...................................................................................................................................... 30 9.3 Temperature ............................................................................................................................ 31 9.4 Nutrients .................................................................................................................................. 32
10. June 2018 ..................................................................................................................................... 33 10.1 Dissolved oxygen .................................................................................................................... 33
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10.3 Temperature .......................................................................................................................... 34 10.4 Nutrients ................................................................................................................................ 35
11. July 2018 ....................................................................................................................................... 36 11.1 Dissolved oxygen .................................................................................................................... 36 11.2 Salinity .................................................................................................................................... 36 11.3 Temperature .......................................................................................................................... 37 11.4 Nutrients ................................................................................................................................ 38
12. August 2018 ................................................................................................................................. 39 12.1 Dissolved oxygen .................................................................................................................... 39 12.3 Temperature .......................................................................................................................... 40 12.4 Nutrients ................................................................................................................................ 41
13. September 2018 ........................................................................................................................... 42 13.1 Dissolved oxygen .................................................................................................................... 42 13.2 Salinity .................................................................................................................................... 42 13.3 Temperature .......................................................................................................................... 43 13.4 Nutrients ................................................................................................................................ 44
14. October 2018 ............................................................................................................................... 45 14.1 Dissolved oxygen .................................................................................................................... 45 14.2 Salinity .................................................................................................................................... 45 14.3 Temperature .......................................................................................................................... 46 14.4 Nutrients ................................................................................................................................ 47
15. November 2018 ........................................................................................................................... 48 15.1 Dissolved oxygen .................................................................................................................... 48 15.2 Salinity .................................................................................................................................... 48 15.3 Temperature .......................................................................................................................... 49 15.4 Nutrients ................................................................................................................................ 50
16. December 2018 ............................................................................................................................ 51 16.1 Dissolved oxygen .................................................................................................................... 51 16.2 Salinity .................................................................................................................................... 51 16.3 Temperature .......................................................................................................................... 52 16.4 Nutrients ................................................................................................................................ 53
17. January 2019 ................................................................................................................................ 54 17.1 Dissolved oxygen .................................................................................................................... 54 17.2 Salinity .................................................................................................................................... 54 17.3 Temperature .......................................................................................................................... 55 17.4 Nutrients ................................................................................................................................ 56
18. February 2019 .............................................................................................................................. 57 18.1 Dissolved oxygen .................................................................................................................... 57 18.2 Salinity .................................................................................................................................... 57 18.3 Temperature .......................................................................................................................... 58 18.4 Nutrients ................................................................................................................................ 59
19. March 2019 .................................................................................................................................. 60 19.1 Dissolved oxygen .................................................................................................................... 60 19.2 Salinity .................................................................................................................................... 60 19.3 Temperature .......................................................................................................................... 61 19.4 Nutrients ................................................................................................................................ 62
20. April 2019 ..................................................................................................................................... 63 20.1 Dissolved oxygen .................................................................................................................... 63
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20.2 Salinity .................................................................................................................................... 63 20.3 Temperature .......................................................................................................................... 64 20.4 Nutrients ................................................................................................................................ 65
21. May 2019...................................................................................................................................... 66 21.1 Dissolved oxygen .................................................................................................................... 66 21.2 Salinity .................................................................................................................................... 66 21.3 Temperature .......................................................................................................................... 67 21.4 Nutrients ................................................................................................................................ 68
22. June 2019 ..................................................................................................................................... 69 22.1 Dissolved oxygen .................................................................................................................... 69 22.2 Salinity .................................................................................................................................... 69 22.3 Temperature .......................................................................................................................... 70 22.4 Nutrients ................................................................................................................................ 71
23. July 2019 ....................................................................................................................................... 72 23.1 Dissolved oxygen .................................................................................................................... 72 23.2 Salinity .................................................................................................................................... 72 23.3 Temperature .......................................................................................................................... 73 23.4 Nutrients ................................................................................................................................ 74
24. August 2019 ................................................................................................................................. 75 24.1 Dissolved oxygen .................................................................................................................... 75 24.2 Salinity .................................................................................................................................... 75 24.3 Temperature .......................................................................................................................... 76 24.4 Nutrients ................................................................................................................................ 77
25. September 2019 ........................................................................................................................... 78 25.1 Dissolved oxygen .................................................................................................................... 78 25.2 Salinity .................................................................................................................................... 78 25.3 Temperature .......................................................................................................................... 79 25.4 Nutrients ................................................................................................................................ 80
26. December 2019 ............................................................................................................................ 81 26.1 Dissolved oxygen .................................................................................................................... 81 26.2 Salinity .................................................................................................................................... 81 26.3 Temperature .......................................................................................................................... 82 26.4 Nutrients ................................................................................................................................ 83
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Introduction
This report presents the results for water quality monitoring carried out at Okehampton Bay, Tasmania for the period August 2017 to December 2019.
1. August 2017
1.1 Dissolved oxygen
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1.2 Salinity
1.3 Temperature
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1.4 Nutrients August 2017 TAN
(mg/L) Nitrogen
Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate
Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.005 0.39 0.009 0.03 <0.1
10m <0.005 0.41 0.008 0.03 <0.1
Bottom 0.006 0.39 0.008 0.03 0.1
Int (12m) 1.7
EPA-MP3 Surface <0.005 0.38 0.008 0.03 0.1
10m 0.005 0.38 0.008 0.03 <0.1
Bottom 0.008 0.4 0.008 0.03 0.1
Int (12m) 1.9
EPA-MP4 Surface <0.005 0.38 0.009 0.03 <0.1
10m <0.005 0.37 0.008 0.03 <0.1
Bottom 0.008 0.36 0.009 0.03 0.1
Int (12m) 1.8
EPA-MP5 Surface <0.005 0.37 0.009 0.03 0.1
10m <0.005 0.38 0.009 0.03 0.1
Bottom <0.005 0.37 0.01 0.03 0.1
Int (12m) 1.1
EPA-MP6 Surface <0.005 0.38 0.008 0.03 <0.1
10m <0.005 0.35 0.008 0.03 <0.1
Bottom 0.006 0.36 0.007 0.02 <0.1
Int (12m) 1.5
EPA-MP7 Surface <0.005 0.4 0.009 0.03 <0.1
10m <0.005 0.4 0.009 0.03 <0.1
Bottom <0.005 0.39 0.008 0.03 <0.1
Int (12m) 1.5
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
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2. September 2017
2.1 Dissolved oxygen
2.2 Salinity
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2.3 Temperature
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2.4 Nutrients September 2017 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.005 0.33 0.006 0.02 <0.1
10m <0.005 0.34 0.006 0.02 <0.1
Bottom 0.006 0.34 0.006 0.02 <0.1
Int (12m)
1
EPA-MP3 Surface <0.005 0.33 0.007 0.02 <0.1
10m <0.005 0.33 0.007 0.02 0.1
Bottom 0.007 0.35 0.007 0.03 0.1
Int (12m)
1.4
EPA-MP4 Surface <0.005 0.34 0.006 0.02 <0.1
10m <0.005 0.3 0.006 0.02 <0.1
Bottom <0.005 0.32 0.006 0.02 <0.1
Int (12m)
1.4
EPA-MP5 Surface 0.006 0.31 0.006 0.02 <0.1
10m <0.005 0.32 0.006 0.02 <0.1
Bottom <0.005 0.28 0.006 0.02 0.1
Int (12m)
1.2
EPA-MP6 Surface 0.006 0.3 0.005 0.02 <0.1
10m 0.006 0.3 0.006 0.02 <0.1
Bottom 0.007 0.3 0.006 0.02 0.1
Int (12m)
1.3
EPA-MP7 Surface <0.005 0.36 0.005 0.02 0.1
10m <0.005 0.38 0.006 0.03 0.1
Bottom 0.005 0.28 0.006 0.02 0.1
Int (12m)
1.3
< = below limit of reporting, TAN = Total Ammonia Nitrogen Chla = Chlorophyll a
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3. October 2017
3.1 Dissolved oxygen
3.2 Salinity
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3.3 Temperature
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3.4 Nutrients October 2017 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.32 0.005 0.03 <0.1
10m <0.005 0.31 0.006 0.04 <0.1
Bottom <0.005 0.31 0.006 0.04 <0.1
Int (12m)
0.7
EPA-MP3 Surface <0.005 0.32 0.005 0.04 0.1
10m <0.005 0.32 0.005 0.04 0.1
Bottom <0.005 0.32 0.007 0.04 0.1
Int (12m)
1.7
EPA-MP4 Surface <0.005 0.31 0.005 0.04 <0.1
10m <0.005 0.32 0.005 0.03 <0.1
Bottom <0.005 0.34 0.006 0.03 <0.1
Int (12m)
0.7
EPA-MP5 Surface <0.005 0.3 0.005 0.04 <0.1
10m <0.005 0.3 0.005 0.04 <0.1
Bottom <0.005 0.31 0.005 0.04 <0.1
Int (12m)
1.2
EPA-MP6 Surface <0.005 0.3 0.005 0.04 0.1
10m <0.005 0.34 0.005 0.04 <0.1
Bottom <0.005 0.3 0.005 0.04 <0.1
Int (12m)
0.9
EPA-MP7 Surface <0.005 0.34 0.005 0.03 <0.1
10m <0.005 0.34 0.006 0.03 <0.1
Bottom <0.005 0.35 0.007 0.03 <0.1
Int (12m)
0.7
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
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4. November 2017
4.1 Dissolved oxygen
4.2 Salinity
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4.3 Temperature
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4.4 Nutrients November 2017 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.44 0.007 0.03 0.1
10m <0.005 0.32 0.007 0.03 0.1
Bottom <0.005 0.31 0.007 0.03 0.1
Int (12m)
0.7
EPA-MP3 Surface <0.005 0.29 0.006 0.03 0.1
10m <0.005 0.32 0.007 0.02 0.1
Bottom 0.005 0.3 0.007 0.03 0.1
Int (12m)
1.2
EPA-MP4 Surface <0.005 0.29 0.007 0.03 0.1
10m <0.005 0.31 0.006 0.02 0.1
Bottom <0.005 0.32 0.007 0.02 0.1
Int (12m)
0.7
EPA-MP5 Surface <0.005 0.29 0.007 0.03 0.1
10m <0.005 0.27 0.007 0.03 0.1
Bottom 0.012 0.36 0.011 0.03 0.2
Int (12m)
0.8
EPA-MP6 Surface <0.005 0.3 0.007 0.03 0.1
10m <0.005 0.3 0.007 0.03 0.1
Bottom <0.005 0.32 0.007 0.03 <0.1
Int (12m)
0.8
EPA-MP7 Surface <0.005 0.33 0.007 0.03 0.1
10m <0.005 0.34 0.007 0.03 0.1
Bottom <0.005 0.34 0.007 0.03 0.1
Int (12m)
0.8
< = below limit of reporting, TAN = Total Ammonia Nitrogen Chla = Chlorophyll a
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5. December 2017
5.1 Dissolved oxygen
5.2 Salinity
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5.3 Temperature
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5.4 Nutrients December 2017 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.008 0.44 0.006 0.04 1.0
10m 0.012 0.33 0.006 0.04 0.2
Bottom 0.016 0.33 0.008 0.05 0.2
Int (12m)
1.4
EPA-MP3 Surface 0.006 0.32 0.007 0.04 0.1
10m 0.008 0.31 0.007 0.05 0.1
Bottom 0.011 0.32 0.008 0.05 0.2
Int (12m)
1.1
EPA-MP4 Surface 0.009 0.31 0.006 0.04 0.2
10m 0.008 0.32 0.007 0.04 0.1
Bottom 0.012 0.32 0.009 0.05 0.2
Int (12m)
1.1
EPA-MP5 Surface 0.010 0.27 0.006 0.04 0.2
10m 0.012 0.32 0.006 0.04 0.1
Bottom 0.006 0.30 0.006 0.05 0.2
Int (12m)
1.2
EPA-MP6 Surface 0.008 0.39 0.005 0.04 1.1
10m 0.009 0.30 0.005 0.04 0.2
Bottom 0.011 0.29 0.007 0.04 0.2
Int (12m)
1.3
EPA-MP7 Surface 0.006 0.37 0.005 0.05 0.8
10m 0.009 0.33 0.006 0.04 0.2
Bottom 0.013 0.35 0.007 0.04 0.2
Int (12m)
1.4
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
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6. January 2018
6.1 Dissolved oxygen
6.2 Salinity
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6.3 Temperature
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6.4 Nutrients January 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.28 0.006 0.04 0.1
10m <0.005 0.36 0.006 0.04 0.1
Bottom <0.005 0.28 0.008 0.04 0.2
Int (12m)
0.7
EPA-MP3 Surface <0.005 0.28 0.005 0.03 0.1
10m <0.005 0.26 0.005 0.04 0.1
Bottom 0.009 0.32 0.015 0.05 0.2
Int (12m)
<0.5
EPA-MP4 Surface <0.005 0.28 0.006 0.04 0.1
10m <0.005 0.27 0.006 0.04 0.2
Bottom 0.008 0.34 0.014 0.05 0.2
Int (12m)
0.6
EPA-MP5 Surface <0.005 0.26 0.005 0.04 0.1
10m <0.005 0.27 0.007 0.04 0.1
Bottom 0.010 0.32 0.014 0.04 0.2
Int (12m)
<0.5
EPA-MP6 Surface <0.005 0.27 0.006 0.04 0.1
10m <0.005 0.27 0.006 0.04 0.1
Bottom 0.008 0.31 0.011 0.05 0.2
Int (12m)
0.5
EPA-MP7 Surface <0.005 0.33 0.007 0.04 0.1
10m <0.005 0.28 0.006 0.04 0.1
Bottom <0.005 0.29 0.007 0.04 0.2
Int (12m)
1.0
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
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7. February 2018
7.1 Dissolved oxygen
7.2 Salinity
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7.3 Temperature
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7.4 Nutrients February 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.006 0.32 0.005 0.03 <0.1
10m <0.005 0.31 0.006 0.04 <0.1
Bottom 0.009 0.32 0.008 0.04 0.1
Int (12m)
0.9
EPA-MP3 Surface 0.005 0.29 0.005 0.03 <0.1
10m 0.005 0.30 0.005 0.03 <0.1
Bottom 0.019 0.31 0.010 0.04 0.1
Int (12m)
<0.5
EPA-MP4 Surface 0.005 0.28 0.004 0.03 <0.1
10m 0.005 0.30 0.004 0.03 <0.1
Bottom 0.015 0.32 0.010 0.04 0.1
Int (12m)
<0.5
EPA-MP5 Surface <0.005 0.27 0.004 0.03 <0.1
10m <0.005 0.29 0.004 0.03 <0.1
Bottom 0.013 0.30 0.009 0.03 0.1
Int (12m)
<0.5
EPA-MP6 Surface 0.008 0.30 0.007 0.03 <0.1
10m <0.005 0.28 0.005 0.03 <0.1
Bottom 0.009 0.29 0.009 0.04 0.1
Int (12m)
<0.5
EPA-MP7 Surface 0.007 0.32 0.005 0.04 <0.1
10m 0.007 0.33 0.006 0.04 <0.1
Bottom 0.008 0.31 0.007 0.03 0.1
Int (12m)
0.7
< = below limit of reporting, TAN = Total Ammonia Nitrogen Chla = Chlorophyll a
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8. March 2018
8.1 Dissolved oxygen
8.2 Salinity
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8.3 Temperature
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8.4 Nutrients March 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.007 0.32 0.005 0.03 <0.1
10m 0.006 0.31 0.005 0.03 <0.1
Bottom 0.005 0.30 0.006 0.03 <0.1
Int (12m)
1.4
EPA-MP3 Surface 0.005 0.28 0.004 0.03 <0.1
10m <0.005 0.27 0.003 0.03 <0.1
Bottom 0.010 0.30 0.010 0.04 0.1
Int (12m)
<0.5
EPA-MP4 Surface 0.006 0.28 0.005 0.03 <0.1
10m 0.009 0.29 0.005 0.03 <0.1
Bottom <0.005 0.30 0.007 0.03 <0.1
Int (12m)
<0.5
EPA-MP5 Surface 0.006 0.29 0.006 0.03 <0.1
10m <0.005 0.29 0.005 0.03 <0.1
Bottom 0.008 0.30 0.007 0.03 <0.1
Int (12m)
<0.5
EPA-MP6 Surface 0.005 0.28 0.006 0.03 <0.1
10m <0.005 0.27 0.005 0.03 <0.1
Bottom 0.008 0.30 0.008 0.03 <0.1
Int (12m)
<0.5
EPA-MP7 Surface 0.005 0.29 0.007 0.03 <0.1
10m 0.005 0.31 0.007 0.03 <0.1
Bottom 0.006 0.30 0.006 0.03 <0.1
Int (12m)
0.6
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
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9. May 2018
9.1 Dissolved oxygen
9.2 Salinity
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9.3 Temperature
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9.4 Nutrients May 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.022 0.32 0.009 0.04 0.1
10m 0.017 0.32 0.008 0.04 0.1
Bottom 0.015 0.33 0.009 0.04 0.1
Int (12m)
0.9 EPA-MP3 Surface 0.008 0.31 0.008 0.04 0.1
10m 0.008 0.31 0.008 0.04 0.1
Bottom 0.006 0.31 0.007 0.04 0.1
Int (12m)
0.8 EPA-MP4 Surface 0.010 0.32 0.009 0.03 0.1
10m 0.008 0.30 0.008 0.03 0.1
Bottom 0.008 0.32 0.008 0.03 0.1
Int (12m)
0.8 EPA-MP5 Surface 0.008 0.30 0.007 0.04 0.1
10m 0.008 0.32 0.008 0.04 0.1
Bottom 0.006 0.30 0.007 0.03 0.1
Int (12m)
1.2 EPA-MP6 Surface 0.010 0.31 0.009 0.03 0.1
10m 0.010 0.31 0.008 0.04 0.1
Bottom <0.005 0.30 0.006 0.04 0.1
Int (12m)
1.0 EPA-MP7 Surface 0.009 0.32 0.008 0.04 0.1
10m 0.011 0.34 0.008 0.04 0.1
Bottom 0.006 0.32 0.007 0.03 0.1
Int (12m)
0.9
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
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10. June 2018
10.1 Dissolved oxygen
10.2 Salinity
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10.3 Temperature
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10.4 Nutrients June 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.29 0.009 0.04 0.1
10m 0.006 0.30 0.008 0.04 0.1
Bottom 0.006 0.30 0.009 0.04 0.1
Int (12m)
1.2
EPA-MP3 Surface 0.007 0.29 0.009 0.04 0.1
10m 0.007 0.29 0.009 0.03 0.1
Bottom 0.010 0.30 0.009 0.04 0.1
Int (12m)
1.0
EPA-MP4 Surface <0.005 0.25 0.009 0.03 0.1
10m <0.005 0.28 0.009 0.03 0.1
Bottom 0.007 0.26 0.009 0.03 0.1
Int (12m)
0.9
EPA-MP5 Surface 0.006 0.28 0.009 0.03 0.1
10m <0.005 0.28 0.009 0.03 0.1
Bottom 0.009 0.29 0.008 0.04 <0.1
Int (12m)
0.7
EPA-MP6 Surface <0.005 0.27 0.009 0.03 0.1
10m <0.005 0.28 0.009 0.04 0.1
Bottom <0.005 0.28 0.008 0.03 0.1
Int (12m)
0.8
EPA-MP7 Surface <0.005 0.31 0.009 0.04 0.1
10m <0.005 0.27 0.009 0.03 0.1
Bottom 0.005 0.34 0.008 0.03 0.1
Int (12m)
0.9
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
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11. July 2018
11.1 Dissolved oxygen
11.2 Salinity
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11.3 Temperature
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11.4 Nutrients July 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.007 0.34 0.012 0.04 <0.1
10m 0.010 0.34 0.012 0.04 <0.1
Bottom 0.007 0.34 0.010 0.04 <0.1
Int (12m)
0.9
EPA-MP3 Surface <0.005 0.31 0.011 0.04 <0.1
10m <0.005 0.34 0.011 0.04 <0.1
Bottom 0.009 0.33 0.012 0.04 0.1
Int (12m)
0.5
EPA-MP4 Surface <0.005 0.34 0.012 0.04 <0.1
10m <0.005 0.36 0.011 0.04 <0.1
Bottom 0.006 0.33 0.011 0.04 <0.1
Int (12m)
0.6
EPA-MP5 Surface <0.005 0.33 0.010 0.04 <0.1
10m <0.005 0.33 0.012 0.04 <0.1
Bottom 0.007 0.34 0.012 0.04 <0.1
Int (12m)
0.6
EPA-MP6 Surface <0.005 0.33 0.009 0.04 0.2
10m <0.005 0.32 0.012 0.04 <0.1
Bottom 0.006 0.35 0.010 0.04 <0.1
Int (12m)
0.7
EPA-MP7 Surface 0.006 0.34 0.011 0.04 <0.1
10m 0.006 0.38 0.011 0.04 <0.1
Bottom 0.006 0.36 0.009 0.04 <0.1
Int (12m)
0.7
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 39
12. August 2018
12.1 Dissolved oxygen
12.2 Salinity
EPA Tasmania, April 2020 40
12.3 Temperature
EPA Tasmania, April 2020 41
12.4 Nutrients August 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.009 0.29 0.009 0.04 <0.1
10m 0.008 0.29 0.009 0.05 <0.1
Bottom 0.005 0.28 0.008 0.04 <0.1
Int (12m)
1.5
EPA-MP3 Surface 0.005 0.29 0.011 0.04 0.1
10m <0.005 0.29 0.011 0.04 0.1
Bottom 0.009 0.26 0.010 0.04 0.1
Int (12m)
0.6
EPA-MP4 Surface <0.005 0.30 0.010 0.04 0.1
10m <0.005 0.29 0.010 0.04 0.1
Bottom 0.008 0.29 0.010 0.04 0.1
Int (12m)
0.8
EPA-MP5 Surface <0.005 0.29 0.010 0.05 0.1
10m <0.005 0.29 0.010 0.04 0.1
Bottom 0.009 0.28 0.011 0.04 0.1
Int (12m)
0.8
EPA-MP6 Surface <0.005 0.26 0.008 0.04 <0.1
10m <0.005 0.27 0.008 0.04 <0.1
Bottom 0.006 0.26 0.008 0.04 0.1
Int (12m)
1.9
EPA-MP7 Surface 0.008 0.30 0.009 0.04 <0.1
10m 0.006 0.30 0.008 0.04 0.1
Bottom 0.008 0.29 0.009 0.04 0.1
Int (12m)
1.5
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 42
13. September 2018
13.1 Dissolved oxygen
13.2 Salinity
EPA Tasmania, April 2020 43
13.3 Temperature
EPA Tasmania, April 2020 44
13.4 Nutrients September 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.010 0.30 0.011 0.05 0.1
10m 0.010 0.36 0.011 0.05 0.1
Bottom 0.015 0.32 0.011 0.05 0.1
Int (12m)
0.9
EPA-MP3 Surface 0.006 0.33 0.010 0.05 <0.1
10m 0.007 0.32 0.010 0.05 <0.1
Bottom 0.012 0.31 0.010 0.05 <0.1
Int (12m)
1.5
EPA-MP4 Surface 0.008 0.33 0.009 0.05 <0.1
10m 0.007 0.23 0.009 0.05 <0.1
Bottom 0.008 0.29 0.009 0.05 <0.1
Int (12m)
2.0
EPA-MP5 Surface 0.011 0.27 0.012 0.05 0.1
10m 0.009 0.30 0.012 0.05 0.1
Bottom 0.012 0.29 0.012 0.05 <0.1
Int (12m)
0.6
EPA-MP6 Surface 0.007 0.29 0.010 0.05 <0.1
10m 0.007 0.29 0.010 0.05 <0.1
Bottom 0.009 0.29 0.009 0.04 <0.1
Int (12m)
1.4
EPA-MP7 Surface 0.007 0.34 0.009 0.05 <0.1
10m 0.007 0.34 0.009 0.05 <0.1
Bottom 0.009 0.28 0.010 0.04 0.1
Int (12m)
2.0
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 45
14. October 2018
14.1 Dissolved oxygen
14.2 Salinity
EPA Tasmania, April 2020 46
14.3 Temperature
EPA Tasmania, April 2020 47
14.4 Nutrients October 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.27 0.007 0.03 <0.1
10m <0.005 0.29 0.007 0.02 <0.1
Bottom <0.005 0.30 0.006 0.02 <0.1
Int (12m)
0.6
EPA-MP3 Surface 0.013 0.25 0.008 0.02 <0.1
10m <0.005 0.26 0.008 0.02 <0.1
Bottom <0.005 0.27 0.007 0.02 <0.1
Int (12m)
0.5
EPA-MP4 Surface <0.005 0.28 0.007 0.02 <0.1
10m <0.005 0.30 0.007 0.02 <0.1
Bottom <0.005 0.28 0.007 0.03 <0.1
Int (12m)
0.5
EPA-MP5 Surface 0.020 0.27 0.010 0.03 <0.1
10m <0.005 0.28 0.006 0.02 <0.1
Bottom <0.005 0.25 0.007 0.03 <0.1
Int (12m)
0.7
EPA-MP6 Surface <0.005 0.25 0.006 0.02 <0.1
10m <0.005 0.25 0.006 0.02 <0.1
Bottom <0.005 0.28 0.006 0.02 <0.1
Int (12m)
0.7
EPA-MP7 Surface <0.005 0.27 0.006 0.02 <0.1
10m <0.005 0.28 0.007 0.02 <0.1
Bottom <0.005 0.25 0.007 0.02 <0.1
Int (12m)
0.6
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 48
15. November 2018
15.1 Dissolved oxygen
15.2 Salinity
EPA Tasmania, April 2020 49
15.3 Temperature
EPA Tasmania, April 2020 50
15.4 Nutrients November 2018 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.28 0.004 0.02 <0.1
10m 0.006 0.28 0.007 0.02 <0.1
Bottom 0.011 0.25 0.008 0.02 <0.1
Int (12m)
1.9
EPA-MP3 Surface <0.005 0.24 0.004 0.02 <0.1
10m <0.005 0.22 0.004 0.02 <0.1
Bottom 0.009 0.26 0.008 0.02 <0.1
Int (12m)
1.4
EPA-MP4 Surface <0.005 0.33 0.004 0.02 <0.1
10m <0.005 0.27 0.004 0.02 <0.1
Bottom <0.005 0.31 0.005 0.02 <0.1
Int (12m)
1.7
EPA-MP5 Surface <0.005 0.25 0.004 0.02 <0.1
10m <0.005 0.27 0.004 0.02 <0.1
Bottom <0.005 0.25 0.006 0.02 <0.1
Int (12m)
1.5
EPA-MP6 Surface <0.005 0.21 0.004 0.02 <0.1
10m <0.005 0.23 0.004 0.02 <0.1
Bottom 0.009 0.28 0.008 0.03 0.1
Int (12m)
1.6
EPA-MP7 Surface <0.005 0.25 0.004 0.02 <0.1
10m <0.005 0.29 0.009 0.02 <0.1
Bottom <0.005 0.33 0.005 0.02 <0.1
Int (12m)
1.6
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 51
16. December 2018
16.1 Dissolved oxygen
16.2 Salinity
EPA Tasmania, April 2020 52
16.3 Temperature
EPA Tasmania, April 2020 53
16.4 Nutrients December 2018 TAN
(mg/L) Nitrogen Total (mg/L)*
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)*
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.23 0.004 0.02 <0.1
10m <0.005 0.25 0.004 0.02 0.1
Bottom <0.005 0.27 0.005 0.03 0.1
Int (12m)
2.8
EPA-MP3 Surface <0.005 0.30 0.003 0.02 <0.1
10m <0.005 0.23 <0.003 0.02 <0.1
Bottom 0.005 0.25 0.008 0.02 0.1
Int (12m)
1.4
EPA-MP4 Surface <0.005 0.22 0.004 0.02 <0.1
10m <0.005 0.25 0.003 0.02 <0.1
Bottom <0.005 0.25 0.009 0.02 0.1
Int (12m)
2.3
EPA-MP5 Surface <0.005 0.23 <0.003 0.02 <0.1
10m <0.005 0.22 <0.003 0.02 <0.1
Bottom <0.005 0.24 0.008 0.02 0.1
Int (12m)
1.3
EPA-MP6 Surface <0.005 0.23 0.003 0.02 <0.1
10m <0.005 0.24 0.004 0.02 <0.1
Bottom <0.005 0.23 0.005 0.03 0.1
Int (12m)
1.0
EPA-MP7 Surface <0.005 0.24 0.003 0.02 <0.1
10m <0.005 0.25 0.003 0.02 0.1
Bottom <0.005 0.28 0.005 0.02 0.1
Int (12m)
1.4
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a * = sample holding time could not be assessed at time of testing and this should be taken to account when interpreting results (assessment made against AS/NZS 5667).
EPA Tasmania, April 2020 54
17. January 2019
17.1 Dissolved oxygen
17.2 Salinity
EPA Tasmania, April 2020 55
17.3 Temperature
EPA Tasmania, April 2020 56
17.4 Nutrients January 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.25 0.004 0.02 <0.1
10m <0.005 0.27 0.005 0.03 <0.1
Bottom <0.005 0.26 0.005 0.03 <0.1
Int (12m)
1.8
EPA-MP3 Surface <0.005 0.23 0.003 0.02 <0.1
10m <0.005 0.24 0.004 0.02 <0.1
Bottom 0.015 0.27 0.011 0.03 0.1
Int (12m)
<0.5
EPA-MP4 Surface <0.005 0.24 0.004 0.02 <0.1
10m <0.005 0.24 <0.003 0.02 <0.1
Bottom 0.011 0.26 0.009 0.03 0.1
Int (12m)
0.8
EPA-MP5 Surface <0.005 0.24 0.004 0.02 <0.1
10m <0.005 0.25 <0.003 0.02 <0.1
Bottom 0.008 0.25 0.006 0.02 <0.1
Int (12m)
0.7
EPA-MP6 Surface <0.005 0.24 0.003 0.02 <0.1
10m <0.005 0.25 0.003 0.02 <0.1
Bottom <0.005 0.25 0.005 0.03 <0.1
Int (12m)
1.0
EPA-MP7 Surface <0.005 0.25 0.004 0.02 <0.1
10m <0.005 0.28 0.004 0.02 <0.1
Bottom <0.005 0.25 0.005 0.02 <0.1
Int (12m)
1.2
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 57
18. February 2019
18.1 Dissolved oxygen
18.2 Salinity
EPA Tasmania, April 2020 58
18.3 Temperature
EPA Tasmania, April 2020 59
18.4 Nutrients February 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.24 0.004 0.02 <0.1
10m <0.005 0.22 0.004 0.02 <0.1
Bottom <0.005 0.22 0.006 0.02 <0.1
Int (12m)
0.9
EPA-MP3 Surface <0.005 0.21 0.005 0.02 <0.1
10m <0.005 0.21 0.005 0.02 <0.1
Bottom <0.005 0.22 0.010 0.02 0.2
Int (12m)
<0.5
EPA-MP4 Surface <0.005 0.22 0.004 0.02 <0.1
10m <0.005 0.23 0.004 0.02 <0.1
Bottom <0.005 0.22 0.005 0.02 <0.1
Int (12m)
<0.5
EPA-MP5 Surface <0.005 0.22 0.004 0.02 <0.1
10m <0.005 0.22 0.004 0.02 <0.1
Bottom <0.005 0.24 0.007 0.02 <0.1
Int (12m)
<0.5
EPA-MP6 Surface <0.005 0.23 0.005 0.02 <0.1
10m <0.005 0.21 0.004 0.02 <0.1
Bottom <0.005 0.22 0.004 0.02 <0.1
Int (12m)
0.6
EPA-MP7 Surface <0.005 0.23 0.005 0.02 <0.1
10m <0.005 0.23 0.005 0.02 <0.1
Bottom <0.005 0.22 0.004 0.02 <0.1
Int (12m)
0.6
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 60
19. March 2019
19.1 Dissolved oxygen
19.2 Salinity
EPA Tasmania, April 2020 61
19.3 Temperature
EPA Tasmania, April 2020 62
19.4 Nutrients March 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.24 0.005 0.02 <0.1
10m <0.005 0.28 0.004 0.02 <0.1
Bottom <0.005 0.23 0.005 0.02 <0.1
Int (12m)
1.0
EPA-MP3 Surface <0.005 0.23 0.004 0.02 <0.1
10m <0.005 0.23 0.004 0.02 <0.1
Bottom <0.005 0.27 0.013 0.03 0.2
Int (12m)
2.9
EPA-MP4 Surface <0.005 0.24 0.004 0.02 <0.1
10m <0.005 0.24 0.004 0.02 <0.1
Bottom 0.005 0.29 0.014 0.03 0.2
Int (12m)
1.2
EPA-MP5 Surface <0.005 0.22 0.003 0.02 <0.1
10m <0.005 0.24 0.004 0.02 <0.1
Bottom 0.011 0.27 0.012 0.03 0.2
Int (12m)
0.5
EPA-MP6 Surface <0.005 0.24 0.004 0.02 <0.1
10m <0.005 0.24 0.004 0.02 <0.1
Bottom 0.006 0.24 0.007 0.02 <0.1
Int (12m)
0.5
EPA-MP7 Surface <0.005 0.25 0.005 0.02 <0.1
10m <0.005 0.27 0.005 0.02 <0.1
Bottom <0.005 0.24 0.005 0.02 <0.1
Int (12m)
0.8
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 63
20. April 2019
20.1 Dissolved oxygen
20.2 Salinity
EPA Tasmania, April 2020 64
20.3 Temperature
EPA Tasmania, April 2020 65
20.4 Nutrients April 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.30 0.006 0.02 <0.1
10m <0.005 0.31 0.006 0.03 <0.1
Bottom <0.005 0.28 0.006 0.03 <0.1
Int (12m)
1.1
EPA-MP3 Surface <0.005 0.25 0.005 0.02 <0.1
10m <0.005 0.24 0.006 0.02 <0.1
Bottom <0.005 0.27 0.006 0.02 <0.1
Int (12m)
0.9
EPA-MP4 Surface <0.005 0.25 0.006 0.02 <0.1
10m <0.005 0.27 0.006 0.02 <0.1
Bottom <0.005 0.28 0.005 0.02 <0.1
Int (12m)
0.7
EPA-MP5 Surface <0.005 0.26 0.006 0.02 <0.1
10m <0.005 0.27 0.005 0.03 <0.1
Bottom <0.005 0.25 0.006 0.02 <0.1
Int (12m)
0.8
EPA-MP6 Surface <0.005 0.25 0.006 0.02 <0.1
10m <0.005 0.26 0.006 0.02 <0.1
Bottom <0.005 0.24 0.007 0.02 <0.1
Int (12m)
1.6
EPA-MP7 Surface 0.019 0.32 0.009 0.03 <0.1
10m 0.010 0.32 0.007 0.03 <0.1
Bottom <0.005 0.30 0.008 0.02 <0.1
Int (12m)
1.3
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 66
21. May 2019
21.1 Dissolved oxygen
21.2 Salinity
EPA Tasmania, April 2020 67
21.3 Temperature
EPA Tasmania, April 2020 68
21.4 Nutrients May 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.007 0.27 0.006 0.03 0.1
10m <0.005 0.27 0.006 0.02 0.1
Bottom <0.005 0.28 0.007 0.03 0.1
Int (12m)
0.9
EPA-MP3 Surface <0.005 0.26 0.007 0.02 0.1
10m <0.005 0.26 0.007 0.02 0.1
Bottom 0.010 0.26 0.007 0.02 0.1
Int (12m)
0.8
EPA-MP4 Surface <0.005 0.26 0.008 0.02 0.1
10m <0.005 0.26 0.007 0.02 0.1
Bottom 0.013 0.28 0.009 0.02 0.1
Int (12m)
0.8
EPA-MP5 Surface <0.005 0.26 0.006 0.02 0.1
10m <0.005 0.25 0.006 0.02 0.1
Bottom <0.005 0.26 0.006 0.02 0.1
Int (12m)
0.9
EPA-MP6 Surface <0.005 0.26 0.006 0.02 0.1
10m <0.005 0.26 0.006 0.02 0.1
Bottom <0.005 0.27 0.008 0.03 0.2
Int (12m)
1.0
EPA-MP7 Surface <0.005 0.24 0.006 0.02 0.1
10m <0.005 0.29 0.006 0.02 0.1
Bottom <0.005 0.27 0.007 0.02 0.1
Int (12m)
0.9
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 69
22. June 2019
22.1 Dissolved oxygen
22.2 Salinity
EPA Tasmania, April 2020 70
22.3 Temperature
EPA Tasmania, April 2020 71
22.4 Nutrients June 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.008 0.30 0.009 0.02 0.1
10m 0.005 0.28 0.008 0.02 0.1
Bottom 0.005 0.28 0.007 0.02 0.1
Int (12m)
1.0
EPA-MP3 Surface <0.005 0.29 0.009 0.03 0.1
10m <0.005 0.30 0.008 0.02 <0.1
Bottom <0.005 0.28 0.008 0.02 0.1
Int (12m)
0.8
EPA-MP4 Surface <0.005 0.28 0.008 0.02 <0.1
10m <0.005 0.30 0.007 0.02 <0.1
Bottom <0.005 0.27 0.008 0.02 <0.1
Int (12m)
0.9
EPA-MP5 Surface <0.005 0.31 0.009 0.03 <0.1
10m <0.005 0.29 0.010 0.02 <0.1
Bottom 0.005 0.29 0.010 0.02 0.1
Int (12m)
0.9
EPA-MP6 Surface <0.005 0.30 0.009 0.03 <0.1
10m <0.005 0.30 0.008 0.02 <0.1
Bottom <0.005 0.28 0.008 0.02 0.1
Int (12m)
1.0
EPA-MP7 Surface <0.005 0.30 0.008 0.03 0.1
10m <0.005 0.33 0.008 0.02 0.1
Bottom <0.005 0.31 0.007 0.02 <0.1
Int (12m)
1.1
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 72
23. July 2019
23.1 Dissolved oxygen
23.2 Salinity
EPA Tasmania, April 2020 73
23.3 Temperature
EPA Tasmania, April 2020 74
23.4 Nutrients July 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface 0.016 0.32 0.013 0.03 0.1
10m 0.013 0.31 0.012 0.03 0.1
Bottom 0.013 0.29 0.012 0.03 0.1
Int (12m)
0.6
EPA-MP3 Surface 0.008 0.31 0.011 0.03 0.1
10m 0.008 0.30 0.012 0.03 0.1
Bottom 0.012 0.30 0.011 0.02 0.1
Int (12m)
<0.5
EPA-MP4 Surface 0.007 0.30 0.006 0.03 0.1
10m 0.007 0.31 0.013 0.03 0.1
Bottom 0.011 0.28 0.011 0.02 0.1
Int (12m)
0.5
EPA-MP5 Surface 0.009 0.29 0.011 0.03 0.1
10m 0.010 0.30 0.011 0.03 0.1
Bottom 0.012 0.30 0.011 0.03 0.1
Int (12m)
0.5
EPA-MP6 Surface 0.010 0.29 0.010 0.03 0.1
10m 0.010 0.29 0.011 0.03 0.1
Bottom 0.011 0.30 0.011 0.03 0.1
Int (12m)
0.6
EPA-MP7 Surface 0.023 0.33 0.013 0.03 0.1
10m 0.021 0.32 0.013 0.03 0.1
Bottom 0.010 0.31 0.011 0.03 0.1
Int (12m)
0.6
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 75
24. August 2019
24.1 Dissolved oxygen
24.2 Salinity
EPA Tasmania, April 2020 76
24.3 Temperature
EPA Tasmania, April 2020 77
24.4 Nutrients August 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.26 0.005 0.02 <0.1
10m <0.005 0.26 0.006 0.02 <0.1
Bottom <0.005 0.26 0.006 0.02 <0.1
Int (12m)
2.7
EPA-MP3 Surface <0.005 0.27 0.009 0.03 <0.1
10m <0.005 0.26 0.009 0.02 <0.1
Bottom 0.009 0.26 0.009 0.03 0.1
Int (12m)
1.7
EPA-MP4 Surface <0.005 0.27 0.008 0.03 <0.1
10m <0.005 0.27 0.009 0.03 <0.1
Bottom 0.008 0.27 0.009 0.02 <0.1
Int (12m)
2.1
EPA-MP5 Surface <0.005 0.26 0.008 0.03 <0.1
10m <0.005 0.28 0.009 0.03 <0.1
Bottom <0.005 0.26 0.006 0.03 <0.1
Int (12m)
2.3
EPA-MP6 Surface <0.005 0.26 0.007 0.03 <0.1
10m <0.005 0.26 0.006 0.02 <0.1
Bottom 0.005 0.26 0.006 0.02 <0.1
Int (12m)
3.0
EPA-MP7 Surface 0.005 0.26 0.007 0.02 <0.1
10m <0.005 0.27 0.007 0.02 <0.1
Bottom 0.005 0.28 0.006 0.02 <0.1
Int (12m)
2.4
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 78
25. September 2019
25.1 Dissolved oxygen
25.2 Salinity
EPA Tasmania, April 2020 79
25.3 Temperature
EPA Tasmania, April 2020 80
25.4 Nutrients September 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.24 0.004 0.020 <0.1
10m 0.005 0.25 0.004 0.024 <0.1
Bottom <0.005 0.23 0.004 0.019 0.1
Int (12m)
1.2
EPA-MP3 Surface <0.005 0.28 0.011 0.026 0.1
10m <0.005 0.28 0.010 0.027 0.1
Bottom 0.006 0.24 0.006 0.021 0.1
Int (12m)
0.8
EPA-MP4 Surface <0.005 0.25 0.005 0.022 <0.1
10m <0.005 0.25 0.004 0.020 <0.1
Bottom 0.006 0.24 0.005 0.020 0.1
Int (12m)
1.2
EPA-MP5 Surface <0.005 0.27 0.008 0.024 0.1
10m <0.005 0.28 0.008 0.025 0.1
Bottom 0.006 0.25 0.005 0.020 0.1
Int (12m)
0.9
EPA-MP6 Surface <0.005 0.24 0.005 0.021 <0.1
10m <0.005 0.24 0.005 0.023 <0.1
Bottom <0.005 0.26 0.005 0.023 <0.1
Int (12m)
1.8
EPA-MP7 Surface <0.005 0.23 0.005 0.017 <0.1
10m <0.005 0.26 0.005 0.023 <0.1
Bottom <0.005 0.24 0.005 0.019 <0.1
Int (12m)
1.2
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
EPA Tasmania, April 2020 81
26. December 2019
26.1 Dissolved oxygen
26.2 Salinity
EPA Tasmania, April 2020 82
26.3 Temperature
EPA Tasmania, April 2020 83
26.4 Nutrients December 2019 TAN
(mg/L) Nitrogen Total (mg/L)
Phosphorus Dissolved Reactive (mg/L)
Phosphorus Total (mg/L)
Silica, Molybdate Reactive (mg/L)
Chla (mg/m3)
EPA-MP2 Surface <0.005 0.21 0.004 0.031 <0.1
10m 0.007 0.22 0.004 0.033 <0.1
Bottom 0.005 0.20 0.004 0.031 <0.1
Int (12m)
0.7
EPA-MP3 Surface <0.005 0.19 0.004 0.029 <0.1
10m <0.005 0.20 <0.003 0.027 <0.1
Bottom <0.005 0.20 0.006 0.035 0.1
Int (12m)
<0.5
EPA-MP4 Surface <0.005 0.21 <0.003 0.032 <0.1
10m 0.007 0.20 0.003 0.030 <0.1
Bottom <0.005 0.22 0.003 0.034 <0.1
Int (12m)
<0.5
EPA-MP5 Surface <0.005 0.20 0.004 0.029 <0.1
10m <0.005 0.21 <0.003 0.032 <0.1
Bottom <0.005 0.21 <0.003 0.034 <0.1
Int (12m)
<0.5
EPA-MP6 Surface <0.005 0.21 0.005 0.029 <0.1
10m <0.005 0.21 0.004 0.030 <0.1
Bottom <0.005 0.21 0.004 0.031 <0.1
Int (12m)
<0.5
EPA-MP7 Surface <0.005 0.20 0.004 0.028 <0.1
10m <0.005 0.21 0.003 0.030 <0.1
Bottom <0.005 0.21 <0.003 0.028 <0.1
Int (12m)
<0.5
< = below limit of reporting, TAN = Total Ammonia Nitrogen, Chla = Chlorophyll a
