Creel survey to monitor Lake Dunstan fishery health

If you meet a ranger while fishing on Lake Dunstan this season, don't be surprised if you get asked some extra questions — all in the name of fisheries management.

Otago Fish & Game has begun surveying anglers on Lake Dunstan, making it the latest lake to be included in the region's fisheries monitoring programme. The surveys — known as creel surveys in fisheries management — have focused on Lakes Hāwea and Wānaka over the past six years, with three years of monitoring completed on each.

Pictured: Otago Fish & Game officer Cole Briggs heads out on Lake Dunstan to survey anglers. Photo: Mason Court

"The Lake Dunstan creel survey has been a great opportunity to get out on the lake and meet local licence holders who regularly fish there," Fish & Game officer Cole Briggs said.

“We expect to meet many more anglers on this popular lake over the summer holidays.

“The data we collect will help us manage the fishery for our licence holders to enjoy for years to come.”

The surveys collect information on anglers' catch rates and fishing activity by interviewing anglers on the water and around the lake shore. Fish & Game staff and volunteer rangers gather data on hours fished, fishing methods, species and numbers of fish caught, and overall fishing experiences — all crucial for understanding the lake's fishery health.

Each month features four survey days — two weekends and two weekdays — with randomly selected launch times to ensure representative data collection.

This season’s early survey efforts have faced challenging conditions.

"We've had wild weather throughout spring and early summer," Mr Briggs said. "Strong winds and high flows have deposited logs and sediment into the lower sections of the lake, creating less-than-ideal fishing conditions at times.

“However, when conditions have settled, anglers have enjoyed the good fishing opportunities Lake Dunstan provides."

In addition to the surveys, Fish & Game rangers will be out in force during the holidays not only checking licences but also offering helpful tips to improve anglers’ success.

Staff and honorary rangers recently completed regular training to help them stay aware of their surroundings and work safely during the busy summer season.

“Be prepared to present your fishing licence when you meet a ranger,” Mr Briggs said. “You’re required to always carry a valid licence when fishing.”

If anglers have not yet received their physical licence, a phone screenshot of the licence — along with a secondary form of identification — will be accepted.

Otago Fish & Game actively manages and monitors waterways and wetlands, including native and introduced species, to ensure their health and sustainability.