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Chapter 18: Transport and Communications: Past and Present

18.36: Power Line in Riding Mountain National Park

The routes followed by power lines are most easily seen on air photos where they traverse woodland. The cutting down of trees to avoid obstruction leaves a readily identified scar along which the line passes; left of centre on this photo is a north/south power line 1 through Riding Mountain National Park following the range line between ranges 19 and 20WI. The route bends 2 to the east at the junction of townships 20 and 21. Using a magnifying lens with the original photo, one can see poles that carry two lines 3. To the east the very light-toned line 4 is the Lake Audy Road, a gravel road that connects Lake Audy (off the photo to the west) with PTH 10 (off the photo to the east). The wider, slightly darker line 5 that crosses the road is possibly the route followed by—or to be followed by—another power line, although no supporting poles can be seen. Note the dark tone of coniferous woodland in the west 6 and the triangular shape of individual coniferous tree shadows 7.

Figure 18.36: Power Line in Riding Mountain National Park

Figure 18.36: Power Line in Riding Mountain National Park

Figure 18.36

Vertical air photograph: A20587-29

Flight height: 10,270 feet a.s.l.; lens focal length: 152.47 mm

Scale: 1:15,600 (approx.)

Date: May 16, 1968

Location: Townships 20 and 21; Ranges 19 and 20WI

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

                    1:50,000 62K/16 Whitewater Lake

                    1:125,000 MCR 207 Riding Mountain National Park