Search Textbook

Table of Contents
Foreword
Preface
Glossary

Chapter 5: Vegetation

5.5: Riverine Gallery Forest in the Souris Valley Near the Elbow of Capture

This high-level, small-scale photo shows the Souris River 1 where it runs through a 90° turn to change from flowing southeast to northeast and then cuts through the Tiger Hills 2, eventually joining the Assiniboine near the small settlement of Treesbank (off the photo to the north). West of the elbow of capture 3 the Souris flows in a glacial spillway that continues eastwards with only a very minor stream channel 4 occupying its floor.

Riverine gallery forest on both sides of the Souris, above 5, 6 and below 7, 8 the elbow of capture, along both sides of the glacial spillway 9, 10, as well as along small tributary valleys 11 is identified solely on the basis of its dark tone. North of the line of the Souris River and the spillway, patches of dark-toned deciduous woodland cover part of the Tiger Hills end moraine 12, but south of the valleys almost all the land has been cleared for agriculture.

In the agricultural area to the south the sections of the DLS system are obvious 13; gravel roads follow most section lines and PTH 23 14 is a more definite light tone than the gravel roads. In the Souris Valley and the spillway, the topography clearly influences the direction followed by some roads 15 with a hairpin bend in one case 16, a rarity on the roads of southern Manitoba. The CN railway line runs east/west across the photo 17 passing through Dunrea 18 and Margaret 19, the latter now almost abandoned.

Figure 5.5: Riverine Gallery Forest in the Souris Valley Near the Elbow of Capture

Figure 5.5: Riverine Gallery Forest in the Souris Valley Near the Elbow of Capture

Figure 5.5

Vertical air photograph: A21808-69

Flight height: 23,200 feet a.s.l.; lens focal length: 85.55 mm

Date: August 6, 1970

Scale: 1:84,500 (approx.)

Location: Townships 5 and 6; Ranges 18 and 19 WI

Map sheets: 1:250,000 62G Brandon 

1:50,000 62 G/5 Dunrea