Search Textbook

Table of Contents
Foreword
Preface
Glossary

Chapter 1: Introduction

1.6: Tonal Variations in Riding Mountain National Park

The large lake in the east 1 is Edwards Lake. In the north it is dark-toned 2 but in the southeast specular reflection can be seen 3. Waves on the lake produce a silky texture in the east 4. Other slightly lighter-toned areas 5 may result from sediment stirred up by waves or from algae growth. A small round lake 6 west of Provincial Trunk Highway (PTH) 10 7 is dark-toned and smooth textured. The photo also illustrates the use of the criterion “shadow” in identification. Coniferous trees, in addition to being dark-toned, throw triangular shadows 8 well seen close to PTH 10 that runs between Wasagaming (to the south) and Dauphin (to the north).

Figure 1.6: Tonal Variations in Riding Mountain National Park

Figure 1.6: Tonal Variations in Riding Mountain National Park

Figure 1.6

Vertical air photo: A20375-189

Flight height: 10,320 feet a.s.l.; lens focal length: 152.47 mm

Scale: 1:15,800 (approx.)

Date: May 21, 1968

Location: Township 22, Range 19 WI

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

1:50,000: 62K/6 Whitewater Lake

1:125,000: MCR 207 Riding Mountain National Park