Heat wave closes salmon pools on 2 N.B. rivers

Salmon pools on two New Brunswick rivers have been closed because high water temperatures during the currentheat waveare stressful to fish, Fisheries and Oceans Canada says.

A stretch of theNepisiguitRiver from the dam at Grand Falls downstream to the mouth of the river is closed to angling except between 6 a.m. and 11 a.m.

On theMiramichiRiver,27 salmon fishing poolshave been closed to angling24 hours a day.The rest of the river is only open to angling between 6 a.m. and 11 a.m.

The areas open to anglingfrom 6 a.m. to 11 a.m. include:

• Northwest Miramichi River upstream to its junction with the North and South branches, not including tributaries;
• Little Southwest Miramichi River including the North Pole Stream and the Lower North Branch Little Southwest Miramichi River, not including tributaries;
• Big Sevogle River including the North and South branches, not including tributaries;
• Southwest Miramichi River including the North and South branches, not including tributaries;
• Rocky Brook and Clearwater Brook, not including tributaries;
• Renous River including the North and South branches, not including tributaries;
• Dungarvon River, not including tributaries;
• Bartholomew River, not including tributaries;
• Cains River, not including tributaries.

The closures for angling are triggeredwhen thewater temperature reaches an established level.

The department said in a release that becauseAtlantic salmon is a cold water species, it can experience temperature-related stress or exhaustion when theminimum water temperature stays above 20 C, which can cause death.

"We are experiencing a period of warm temperatures in the air as you have seen but also in the water," saidFrdric Butruille, regional senior fisheries and aquaculture management officer.

"Angling can be detrimental to the survival of salmon when it is done in warm waters."

Butruillesaid the water temperature has to be above 20 Celsius for 48 hours before a closure is considered.

"How hot is it? We have seen two days in theNepisiguitwhere the average temperature stayed above 20 degrees Celsius, so it was time to act."

ButButruillepointed out that during the hottest part to the day the river reached 28 C.

With high temperatures, Atlantic salmon seek refuge in cooler parts of the river or brooks and sometimes bunch together.Butruillesaid some will still take a fly but if they are stressed and exhausted from the fight, they could die after being released.

While this is the first angling closure on theNepisiguitRiver,Butruillesaid there has been previous closures on the Miramichi River where a water temperature protocol has been in place for seven years.

"The anglers are very sensible to everything that can harm salmon. They are very concerned of the state of salmon in general so we have a good collaboration and everybody I work with wants to protect salmon as much as possible and do the right thing."

Fisheries and Oceans will issue a notice whenconditions have improved enough to reopen angling in the affected rivers.