Department of Primary Industries' Jim Harnwell said trout fishing was prohibited in rivers and streams after the June long weekend until the start of the October long weekend.

"This closure allows brown, rainbow and brook trout to breed uninterrupted during their annual spawning run ensuring we protect our natural fishing assets for future seasons," Mr Harnwell said.

"The good news for fishers is they can continue fishing for trout during the annual closure, without breaking the rules, at any of the trout dams across the state."

IN OTHER NEWS:

DPI Director of Fisheries Compliance, Dr Andrew Moriarty said it is an offence to fish in trout streams during the closed season.

"Fishers heading to one of the trout dams this winter are reminded that they are required to have a current NSW recreational fishing licence receipt on them at all times while fishing," Dr Moriarty said.

"A combined bag limit of five and a size limit of 25cm applies for trout or salmon in all trout dams except Thompsons Creek Dam and Black Lake where the bag limit is two."

Detailed information on the fishing rules can be found at www.dpi.nsw.gov.au or in the NSW Freshwater Fishing Guide which is available from DPI Fisheries offices and most bait and tackle stores.