The NSW Office of Water, in conjunction with State Water Corporation, Local Government and water utilities, maintains an extensive blue-green algae and water quality monitoring network across NSW.

The map of 2008–09 algal alert levels shows that the continuing drought across most of the State provided ideal conditions for algal growth.

Numerous large storages were on Red Alert for more than half of 2008–09, including: Malpas (Armidale) Algal alert levels for Pindari Reservoir (Ashford/Inverell) recreational use in NSW are Copeton Reservoir (Inverell) based on biovolume guidelines

Windamere Reservoir (Mudgee). from the National Health and

The blue-green algal bloom in the in autumn 2009 highlighted Medical Research Council the strength and resilience of algal management in NSW, with the former Department of Water and Energy able to mobilise resources quickly and (2008) Guidelines for Managing efficiently to monitor outbreaks and to co-ordinate a response with other states Risks in Recreational Waters and agencies.

Clarrie Hall Reservoir Macintyre River at Boggabilla Toonumbar Reservoir Iron Pot Ck. D/S Toonumbar

Lake Ainsworth

Pindari Reservoir Severn R. D/S Pindari Barwon R. Collarenebri Blue Pools, Angourie

Beardy Waters Reservoir

Copeton Reservoir Barwon R. Dangar Bridge (Walgett) Namoi R. Walgett Darling R. Bourke

Malpas Reservoir

Gara R. D/S Malpas Darling R. Rose Isle Split Rock Reservoir Darling R. Louth Manilla R D/S Split Rock Gara Reservoir

Keepit Reservoir Tilpa Namoi R. D/S Keepit

Trevallyn Chaffey Reservoir Peel R. downstream Chaffey

Wilcannia Atley

Culpaulin

Glenbawn Reservoir Dubbo Western Plains Zoo Lostock Reservoir Copi Hollow Lake Wetherell Lake Pamamaroo Lake Liddell Patterson R. downstream of Menindee Geurie Burrendong Glennies Creek Reservoir Telarah Lagoon, Weir 32 Wellington Reservoir Maitland Walka Waterworks Lagoon, Mungo Brush, Myall Lakes Macquarie R. Windamere Maitland D/S Reservoir Cudgegong R. Williams R. Seaham Weir Tolarno D/S Windamere Fishery Creek, Farley Lachlan R. Warrabrook Reserve Lake Cargelligo Weir Stockton Beach Lake Ck at Lachlan R. Condobolin Lake Cargelligo Outlet Curlew Water Hawkesbury R. Lower Portland Willandara Weir Lake Forbes Lake Cargelligo Cadiangullong Dam Farmers Ck Menincourt Lachlan R. Forbes (Cadia Mine) D/S Lithgow STP Pooncarie Lake Brewster Weir Hillston Hawkesbury R. Sackville Lake Lyell

Ben Chiffley Dam Hawkesbury R. Cattai Bathurst Tunley Point Burtundy Nepean R. Penrith Weir Lachlan R. Cowra Wyangala Reservoir Tapio Ellerslie Birkenhead Point Lachlan R. D/S Wyangala

Mount Annan Lake Lake Outlet Regulator Lake Wyangan, Griffith Buronga Corrong Lock 8 Curlwaa Fort Courage Merbein Redbank Weir Wingecarribee R. Sheepwash Bridge Carathool Maude Weir Hay Weir Lake Benanee Gogeldrie Weir Pajar Reservoir Rec Area Fitzroy Falls Reservoir Mount Dispersion Euston Lake Yarrunga (Bendeela Picnic Area) R.

Edward R. Wollundry Lagoon, Burrinjuck Reservoir Billabong Ck D/S channel D/S Wagga Wagga Moonah Lagoon Lake Albert, Wagga Wagga Water Supply Canal Edwards R. Moonahcullah at Moonahcullah Wakool-Barham Reservoir Road Murray Downs Billabong Ck. Edward R

Tocumwal Barham Canal Billabong Ck. Gulpa Ck. Offtake Picnic Tantangara Reservoir Point

Torrumbarry Weir Cobham Barmah Yarrawonga Union Bridge Reservoir Reported algal blooms 2008–09 showing percentage of days with red, Brogo amber and green outbreak alerts

red outbreak alert amber outbreak alert green outbreak alert 50 25 050 100% 50% 25% Ki lometr es 09_102b

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