Site 03 - Nutuvukti Lake Outlet - Tributary

• Lake-fed tributary enters into main channel, river right
• Gravel-cobble point bar created downstream of tributary
• Shifts from cobble-gravel to gravel and sand at lower end of point bar. There are 4 or 5 scattered boulders.
• Large eddy in main channel created by point bar
• Vegetation on upstream side of tributary mouth is dominated by Spruce and Birch trees, with small band of grasses and Cottonwoods at river’s edge
• Vegetation on point bar has thicker band of scrubs and Willows, with Spruce stand starting from ,3-10 meters back
• Mouth of tributary is ~11 meters wide
• Tributary substrate is medium sand with some coarser grains
• Gravel in tributary ~30 m upstream
• Fines and silts near mouth of tributary; gravel embedded in tributary bed
• There is a beaver lodge near mouth of tributary (inside tributary channel), on river left of tributary
• Lack of ice scour on the point bar, possibly because point bar is not very elevated above river level
• Some exposed bedrock on river left side of tributary about 4 m high, next to riffle feature
• Riffle has two channels of faster-moving current on either side

Location