Abstract
The rainfall patterns in the Wilson Creek Experimental Watershed in Riding Mountain National Park are analysed. Since this watershed lies on the Manitoba Escarpment there is a relatively sudden change in elevation across the watershed. The average annual rainfall is plotted against station elevation and against distance of the rainfall stations from the National Park boundary. Two distinct trends were observed. The average annual rainfall increases significantly from the bottom to the top of the escarpment. The average annual rainfall also levels off very quickly as the relatively flat plateau at the top of the escarpment is reached. No carry-over effects from terrain-induced upflow enhancement were observed. Key words: Manitoba Escarpment, rainfall variation, topography, upflow enhancement, Wilson Creek.
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