Search Textbook

Table of Contents
Foreword
Preface
Glossary

Chapter 3: Geologic Structure and Landforms

3.39: The Little Saskatchewan River Valley Northeast of Newdale

The Little Saskatchewan River 1 flows south from Riding Mountain, and at the location shown occupies a meander belt about 1500 feet (457 m) across 2. In the past, when ice over Riding Mountain was melting rapidly, the river channel occupied the whole of the present meander belt and was confined within a valley whose position is indicated by the dashed lines 3. The wide river channel migrated in the direction indicated by the arrows 4 leaving behind flat land, most of which has been cleared for agriculture. The present meandering channel has abandoned several meanders 5.

This is a spring photo, and patches of snow can still be seen in the valley 6. Also at this time of rapid snow melt, parts of the floodplain are inundated resulting in a dark tone 7. Three gullies enter the main valley from the north; one is clearly occupied by a stream 8, but the others 9 appear dry. Similar dry gullies enter from the south 10. Outside the valley the surface is underlain by ground moraine with numerous hollows that in the spring are lake filled; however, the topographic map of the area shows many of these lakes as intermittent 11.

The land is divided according to the DLS system with roads following north/south and east/west section lines even across some lakes 12. However, in some places the topography determines road direction as, for example, down the valley side 13 and along the valley side 14. The east/west road 15 is, judging by its light tone, newly constructed.

Figure 3.39: The Little Saskatchewan River Valley Northeast of Newdale

Figure 3.39: The Little Saskatchewan River Valley Northeast of Newdale

Figure 3.39

Vertical air photograph: A15225-27

Flight height: 20,000 feet a.s.l.; lens focal length: 152.26 mm

Date: May 24, 1956

Scale: 1:35,200 (approx.)

Townships 16 and 17, Ranges 19 and 20 WI

Map sheets: 1:250,000 62K Riding Mountain

1:50,000 62K/8 Newdale