Flight height: 9,800 feet a.s.l.; lens focal length: 152.4 mm
Scale: 1:17,000 (approx.)
Date: October 4, 1946
Location: Township 15, Range 27/28 WI
Map sheets: 1:250,000 62K Riding Mountain
1:50,000 62K/6 Birtle
The photo shows a stretch of the south flowing Assiniboine River 1 just above (0.75 miles: 1.2 km) its junction with Birdtail Creek. The river meanders freely across the floor of the Assiniboine Spillway, a flat-floored valley that used to carry water from glacial lakes in Saskatchewan to glacial LakeAgassiz in southern Manitoba. Several abandoned channel sections 2 can be seen, all of which were abandoned before the first map of the area was made in 1882. Note two narrow meander necks 3 and 4 in the southern half of the photo.
Note also: 1) the relatively light tone of the sediment-laden Assiniboine River 5, compared with the dark sediment-free water 6 in abandoned channels; and 2) the mottled texture 7 in the area of deciduous woodland west of the river where trees are changing colour at the beginning of fall resulting in various tones.