Manitoba’s location in Canada is best shown on high level satellite images with some cartographic enhancement to show the position of its borders (Figure 2.1). In the case of Figure 2.1, a satellite 900 km above the earth’s surface obtained the individual images used in its construction. Manitoba has borders with the United States to the south; Saskatchewan to the west; Ontario to the east; and Nunavut to the north. These have been added to the image and are not, of course, represented by any physical barrier on the ground. Differences of land use on either side of the international border may make it recognizable even on small-scale satellite images (Figure2.5) as well as on larger scale air photographs (Figures 2.6 and 2.7). However, the border is not always marked by land use differences (Figure 2.8), and in some cases, although there is a clear tonal difference from one side to the other, it is not obvious what this represents on the ground (Figure 2.9).
The inter-provincial borders and the border with Nunavut cannot be distinguished on the basis of land use differences because none exist. In wooded areas (Figure 2.10) the border is often represented by a cut line, but in agricultural areas (Figure 2.11) the border is merely an abstract line symbolically represented on maps.
A high proportion of Manitoba’s total area (15.6 percent) is water including some very large lakes, for example, Lake Winnipeg, Lake Winnipegosis, Lake Manitoba, and Cedar Lake These and many smaller lakes can be identified on satellite images (Figure 2.2, and 2.3). Not only their location can be seen but also information can be obtained about their depth and sediment content (Figure 2.3).
The photograph shows even more clearly than Figure 2.6 the difference in land cover north and south of the international border. North of the border the vegetation consists mainly of mixed deciduous and coniferous woodland, but the dark patches 1 are coniferous plantations. In Canada, Turtle Mountain Provincial Park is located west of PTH 10 2. The customs control buildings are seen north and south of the border 3. Along the border west of PTH 10 are the formal gardens of the Peace Garden 4 with a peace arch 5 located at the entrance to the park. Most of the lakes are natural, resulting from the hummocky nature of this moraine-covered area, but some are at least partly artificial and ornamental 6. In contrast to figure 2.6 all the lakes are dark-toned.
A peripheral roadway 7 circles the park on both sides of the border, making it easy for visitors to do a quick motor tour. In the southeast corner is a runway for light aircraft 8.
Vertical air photograph: A 19903-28
Flight height: 9,900 feet a.s.l; lens focal length 152.14 mm
Date: May 16, 1967
Scale: 1: 15,800 (approx.)
Location: Township 1, Range 20 WI
Map sheets: 1:250,000 62F Virden
1:50,000 62F/1 Deloraine