11 October 2016 | Hydro Tasmania |

Link To 16-10-11-rti-decision-letter-bryan-green_cloud-seeding-information

Link To Cloud Seeding Hydro Tasmania

Cloud seeding Cloud seeding, a cloud seeding program. Cloud seeding flights stopped in June 2016. Hydro Tasmania sometimes used cloudseeding over some catchments to produce a moderate increase in rainfall. When operating, is cloud seeding? Cloud seeding is a technique that increases rainfall in a target area. Cloud, . Cloud seeding only occurs when the Bureau of Meteorology forecasts rain, and even then only if conditions are favourable for cloud seeding to be successful. Hydro Tasmania was involved in bothhttps://www.hydro.com.au/water/rainfall/cloud-seeding

Cloud seeding will not proceed in 2017Cloud seeding will not proceed in 2017, Hydro Tasmania will not resume cloud seeding for at least the remainder of this year. As we’ve previously committed, Hydro Tasmania will not resume cloud seeding until there’s been a full internal review of the program, with any appropriate improvements being implemented, supported by stakeholder, Government Flood Review are released. The business will not proceed with the 2017 cloud seeding, with stakeholders before further consideration is given to resuming the cloud seeding program. With storages abovehttps://www.hydro.com.au/news/media-releases/2017/09/14/cloud-seeding-will-not-proceed-in-2017

Cloud_seeding_summary_for_2014Cloud_seeding_summary_for_2014,  Summary of 2014 Cloud Seeding flights and catchments targeted 2014 Season 1 2 3 4 5 6 7 8 9 10, UD July Go Go Go August Go September Go Go Go Go October Go Go Legend Seeding flight Instrument test or research flight Target Areas Go Gordon MF Mersey-Forth - Lake Rowallan No-seeding flight No cloud seeding - aircraft unavailable GL Great Lake UD Upper Derwent - Lake King Willian, Lake St Clair, Lake Echo UP Upper Pieman - Lake Mackintosh The Cloud Seeding season in 2014 commencedhttps://www.hydro.com.au/docs/default-source/water/cloud-seeding/cloud_seeding_summary_for_2014.pdf?sfvrsn=a2731328_0

Cloud_seeding_summary_for_2013Cloud_seeding_summary_for_2013,  Summary of 2013 Cloud Seeding flights and catchments targeted 2013 Season 1 2 3 4 5 6 7 8 9 10, GL Go August Go UD u Go Go Go UD September Go Go October Go Legend Seeding flight Instrument test or research flight Target Areas Go Gordon MF Mersey-Forth - Lake Rowallan No-seeding flight No cloud seeding - aircraft unavailable GL Great Lake UD Upper Derwent - Lake King Willian, Lake St Clair, Lake Echo UP Upper Pieman - Lake Mackintosh The Cloud Seeding season in 2013 commencedhttps://www.hydro.com.au/docs/default-source/water/cloud-seeding/cloud_seeding_summary_for_2013.pdf?sfvrsn=87731328_0

cloud seeding summary for 2016cloud seeding summary for 2016,  Summary of 2016 Cloud Seeding flights and catchments targeted 2016 Season 1 2 3 4 5 6 7 8 9 10, UD GL May Go UD GL Go AG Go UD AG Go June UD Cloud Seeding operations suspended for the remainder of the 2016 season July August September October Legend Seeding flight Instrument, Rowallan No-seeding flight No cloud seeding- aircraft unavailable GL Great Lake UD Upper Derwent - Lake King William, Lake St Clair Cloud seeding operations suspended UP Upper Pieman - Lakehttps://www.hydro.com.au/docs/default-source/water/cloud-seeding/cloud_seeding_summary_for_2016.pdf?sfvrsn=f5731328_0

Cloud seeding media release_4June2008Cloud seeding media release_4June2008,  MEDIA RELEASE 4 June 2008 Report into cloud seeding on the West Coast Hydro Tasmania, concerns over the annual cloud seeding program. The independent report prepared by SGS Economics, in mid-2007, the report addresses the region’s rainfall regime and the effects of cloud seeding, develops, and the amount of scientific debate on cloud seeding, both parties recognised the importance and benefits, of information about the cloudseeding program, Hydro Tasmania will:  Improve its communication of cloudhttps://www.hydro.com.au/docs/default-source/water/cloud-seeding/cloud-seeding-media-release_4june2008.pdf?sfvrsn=17441228_0

Cloud_seeding_summary_for_2015Cloud_seeding_summary_for_2015,  Summary of 2015 Cloud Seeding flights and catchments targeted 2015 Season 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 April May Go Go UD GL UD UD, Rowallan No-seedingflight No cloud seeding - aircraft unavailable GL Great Lake UD Upper Derwent - Lake King William, Lake St Clair, Lake Echo UP Upper Pieman - Lake Mackintosh The Cloud Seeding, August Go Go Go September Go UD UP MF Go Go Go October Go Legend Seeding flight Instrument testhttps://www.hydro.com.au/docs/default-source/water/cloud-seeding/cloud_seeding_summary_for_2015.pdf?sfvrsn=ca731328_2

Cloud seeding statementCloud seeding statement, of our people, the public and our assets. Hydro Tasmania understands community concern about its cloud seeding program. Due to the unprecedented dry conditions since September 2015, Hydro Tasmania began its cloudseeding season in April, one month earlier than has been the practice in recent years, of that program a cloud seeding flight was undertaken on Sunday morning, 5 June. It was targeting, is not in the catchment targeted by Sunday’s cloud seeding flight. Hydro Tasmania’s cloud seedinghttps://www.hydro.com.au/news/media-releases/2017/09/14/cloud-seeding-statement

Cloud seeding_Flight maps_2014Cloud seeding_Flight maps_2014, Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0"E 147°0'0"E 146°0'0"E 146°0'0"E 145°0'0"E 145°0, 250 300 25 Kilometres Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0"E 147°0'0"E 146°0'0"E 146°0, Speed & Direction: ¿ 0 50 100 150 200 250 300 25 Kilometres Cloud Seeding 148°0'0"E 148°0'0"E, Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0"E 147°0'0"E 146°0'0"E 146°0'0"E 145°0'0"E 145°0'0"E, 25 Kilometres Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0"E 147°0'0"E 146°0'0"E 146°0'0"E 145https://www.hydro.com.au/docs/default-source/water/cloud-seeding/cloud-seeding_flight-maps_2014.pdf?sfvrsn=a54d1228_0

Cloud seeding_Flight maps_2013Cloud seeding_Flight maps_2013, Kilometres Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0"E 147°0'0"E 146°0'0"E 146°0'0"E 145°0'0"E, 250 300 25 Kilometres Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0"E 147°0'0"E 146°0'0"E 146°0, & Direction: ¿ 0 50 100 150 200 250 300 25 Kilometres Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0, Average Wind Speed & Direction: ¿ 0 50 100 150 200 250 300 25 Kilometres Cloud Seeding 148°0'0"E, 25 Kilometres Cloud Seeding 148°0'0"E 148°0'0"E 147°0'0"E 147°0'0"E 146°0'0"E 146°0'0"E 145https://www.hydro.com.au/docs/default-source/water/cloud-seeding/cloud-seeding_flight-maps_2013.pdf?sfvrsn=604e1228_0

• Link to PubChem Silver Iodide Hazard

• Link to PubChem Silver Iodide Hazard

“The major hazards encountered in the use and handling of silver iodide stem from its toxicologic properties. Toxic by all routes (ie, inhalation, ingestion, and dermal contact), exposure to this odorless, light yellow, crystalline substance may occur from its use in seeding clouds for rain-making…"

"...Silver iodide may form explosive compounds...”