Thousands of fish have died at Wallagoot Lake on the Far South Coast. Image courtesy of NPWS.
Thousands of fish have died in a coastal lake on the Far South Coast of NSW.
The NSW Department of Primary Industries says thousands of snapper and a small number of spined leatherjackets have washed up over the last few days at Wallagoot Lake, south of Tathra.
A DPI spokesperson says investigations by DPI Fisheries and Bega Valley Council have "confirmed poor water quality" as the suspected cause.
"Results received today from comprehensive testing by Council has indicated dissolved oxygen levels are poor throughout the lake and in some locations below levels able to support aquatic life. This poor water quality is suspected to be the result of run-off from recent heavy rain in the catchment of Wallagoot Lake.
"DPI Fisheries is continuing to work with Council on assessing the fish kill as ongoing deaths could occur given water quality issue," the spokesperson said.
The lake is currently closed to the ocean and Council is assessing whether or not to open it.