Dirty-looking rivers in Otago do not bode well for the start of the whitebaiting season tomorrow.
Most of Otago's major rivers were looking discoloured, but some of the smaller coastal rivers were clear, Department of Conservation ranger Pete Ravenscroft said.
"It's not looking great," he said.
The whitebait season runs until November 30 over most of New Zealand, except for the West Coast, where it runs from September 1 to November 14.
However, early indications were that last year's good season on the Clutha River might be repeated, he said.
"We've had reports already that they're running in the Clutha."
Doc was not sure why last season was so good in the lower Clutha, but the work it was doing with Contact Energy to regulate flows during spawning season could be contributing.
This year, Doc had worked with the Otago Regional Council to open the Kaitangata floodgates, which could make a significant difference, he said.
"We've done everything possible [to help them spawn], so it's all quite positive."
Doc had also completed a habitat assessment on the lower Clutha to determine other areas that needed improvement, he said.
Rangers would be out again this season and would be paying particular attention to the lower Clutha after last season's problems with people fishing illegally at night.
"We'll be looking to rectify those problems so everybody gets their fair share."
It was important anyone whitebaiting made themselves aware of the regulations, he said.
Mr Ravenscroft's tip for opening day was to go whitebaiting close to the sea, but novices should take time to watch experienced whitebaiters at work before attempting it themselves.
"But most of all, make sure you have time and patience."
Also remember to "check, clean, dry" whitebaiting gear when moving between waterways to prevent the spread of didymo, he said.
