Land holdings in most of southern Manitoba have been determined using one of two systems. The older long-lot system, derived from the St. Lawrence lowlands in Quebec, is found along the Red River, along the Assiniboine River west to Portage la Prairie, as well as in several other isolated areas. Lots were laid out at right angles to the river, resulting in a distinctive pattern easily observed on remotely sensed images. The DSL system, which divided land into one square mile sections, was applied to virtually all other areas. The resulting squared pattern is a prominent feature on remotely sensed images. Interesting situations occur where the two systems come into contact. The DLS system was amended several times, but in Manitoba there is evidence of only the first and third systems. Careful interpretation of air photos can reveal the differences between the two systems.
Although in the DLS system (First System) sections were supposed to be square and a uniform 640 acres in size, surveying mistakes were made resulting in sections varying in shape and size. This can be seen in township 4, range 9WI where section lines between sections 8 and 17 1, 20 and 21 2, 22 and 27 3, and 21 and 28 4 are crooked as shown on the overlay. The area shown includes the Pembina spillway in which flows the misfit Pembina River 5 flowing southeast to join the Red River (off the photo). Numerous small lakes 6 can be seen in the north occupying hollows in the Darlingford moraine covering Pembina Mountain. Several have dried out 7 and have been partly reclaimed for agriculture 8. Steep-sided creek valleys 9 dissect the relatively flat land outside the spillway. Two of them determine the direction of the CP line 10 into and out of La Riviere 11 located on the spillway floor. East of La Riviere is Manitou 12, the two being joined by PTH 3 13 which loops its way down the spillway side into La Riviere 14. The only other settlement visible in the area is St. Leon 15 located on the shore of one of the larger lakes with PTH 23 16 running just north of it. Also in the north is a light-toned line 17 indicating the location of a buried oil pipeline.
Vertical Air Photograph: A21852-6
Flight height: 23,070 feet a.s.l.; lens focal length: 88.55 mm
Scale: 1:80,000 (approx.)
Date: August 12, 1970
Location: Township 3, 4, and 5; Ranges 8, 9, and 10 WI
Map sheets: 1:250,000 62G Brandon
1:50,000 62G/7 Somerset