Table of Contents
2: Location, Borders, and Lakes
3: Geologic Structure and Landforms
6: Pre-historic and Early Historic Settlements
7: Survey Systems
8: Southern Hamlets, Villages, and Towns
9: Mennonite and Hutterite Settlements
10: First Nations Settlements
11: Northern Settlements
12: The Southern Cities
13: Mining and Oil Extraction
15: Industry / Manufacturing
16: Water Resources
17: Parks, Recreation, Sports
18: Transport and Communications: Past and Present
19: Legal Issues and Law Enforcement
Click for chapter introduction
Manitoba displays a large range of vegetation types that are arranged with a climatically determined north/south zonation. Grass-covered areas in the south give way to parkland and forested areas further north and eventually to shrub tundra in the extreme northeast.
In southern and west central Manitoba, agriculture, grazing, forestry and urban development have drastically altered the natural vegetation, but vast areas in the north and northeast are in near pristine state. Vegetation that often obscures the earth’s surface is clearly shown on air photos; particularly useful are colour infrared images that can detect stressed areas. Wetlands cover about 40 percent of Manitoba and do not conform to the climatically determined zonal distribution of vegetation. They occur in all parts of the province and provide distinctive ground cover well shown on air photos.
Individual animals are too small to appear on all except very large-scale images. However, some animals (e.g. beaver) profoundly affect drainage systems.
5.5: Riverine Gallery Forest in the Souris Valley Near the Elbow of Capture
This high-level, small-scale photo shows the Souris River 1 where it runs through a 90° turn to change from flowing southeast to northeast and then cuts through the Tiger Hills 2, eventually joining the Assiniboine near the small settlement of Treesbank (off the photo to the north). West of the elbow of capture 3 the Souris flows in a glacial spillway that continues eastwards with only a very minor stream channel 4 occupying its floor.
Riverine gallery forest on both sides of the Souris, above 5, 6 and below 7, 8 the elbow of capture, along both sides of the glacial spillway 9, 10, as well as along small tributary valleys 11 is identified solely on the basis of its dark tone. North of the line of the Souris River and the spillway, patches of dark-toned deciduous woodland cover part of the Tiger Hills end moraine 12, but south of the valleys almost all the land has been cleared for agriculture.
In the agricultural area to the south the sections of the DLS system are obvious 13; gravel roads follow most section lines and PTH 23 14 is a more definite light tone than the gravel roads. In the Souris Valley and the spillway, the topography clearly influences the direction followed by some roads 15 with a hairpin bend in one case 16, a rarity on the roads of southern Manitoba. The CN railway line runs east/west across the photo 17 passing through Dunrea 18 and Margaret 19, the latter now almost abandoned.
Figure 5.5: Riverine Gallery Forest in the Souris Valley Near the Elbow of Capture
Vertical air photograph: A21808-69
Flight height: 23,200 feet a.s.l.; lens focal length: 85.55 mm
Date: August 6, 1970
Scale: 1:84,500 (approx.)
Location: Townships 5 and 6; Ranges 18 and 19 WI
Map sheets: 1:250,000 62G Brandon
1:50,000 62 G/5 Dunrea