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Table of Contents
Foreword
Preface
Glossary

Chapter 3: Geologic Structure and Landforms

3.44: Spring Sapping Near Wigle Springs on the Assiniboine River Below Brandon

In this area the Assiniboine 1 has incised itself through the sands of the Assiniboine Delta into the underlying clay. Springs emanate from river cliffs on the outside of the river bend originating at the junction of the permeable sands and impermeable clay. Slow headward erosion by the spring water has led to cliff retreat of about 0.9 miles (1.4 km) in a northerly direction 2. Four nebulously shaped lakes 3 are located in hollows in the flat area left by the cliff retreat. Most of the water finds its way into a small stream 4 that enters the Assiniboine from the northeast. Most of the embayment is wooded 5 as are the banks of the Assiniboine 6. To the north and west of the river is a sand plain 7, but in the southeast relic sand dunes can be seen 8. The plain is mainly grass covered—light-toned 9—with occasional patches of deciduous trees—dark-toned 10. Scattered over the plain are intermediate-toned patches of creeping juniper (Juniperus horizontalis) 11.

The items in a compound 12 are probably associated with Canadian Forces Base (CFB) Shilo just off the photo to the east. Trails across the area are light-toned 13 because vegetation has been removed exposing the underlying sand.

Figure 3.44: Spring Sapping Near Wigle Springs on the Assiniboine River Below Brandon

Figure 3.44: Spring Sapping Near Wigle Springs  on the Assiniboine River Below Brandon

Figure 3.44

Vertical air photograph

Flight height: 11,225 feet a.s.l.; lens focal length: 152.45 mm

Date: August 10, 1965

Scale: 1:20,500 (approx.)

Location: Township 9; Ranges 16 and 17 WI

Map sheets: 1:250,000 62G Brandon 

1:50,000 62G/12 Wawanesa

62G/13 Brandon