/home/cms_data/dfault/photos/stories/id/5/2/6252/s_ERRORDepartment of Fish and Game fisheries technician Dana VanBurgh empties a fish trap of juvenile coho salmon at near 20 Mile Haines Highway last week. Traps are used toward gaining population estimates of salmon. Early cold temperatures have frozen over sections of river, complicating the work in recent weeks.