The Canadian Press The Fort Nelson First Nation in northeast British Columbia has issued a wildfire evacuation order for a remote riverside reserve, telling residents and visitors they must immediately leave by boat. The First Nation said the order covered the Kahntah Reserve, which is a few kilometres south of an out-of-control fire that was discovered on Monday. The BC Wildfire Service said on its online dashboard that the blaze, measuring five hectares in size, was believed to have been caused by lightning. The evacuation order comes as the service announces a provincewide campfire ban, with the exception of the Haida Gwaii Forest District, which will take effect on Friday because of the increased risk of wildfire starts from current and forecasted weather conditions. The Fort Nelson First Nation issued…