Abstract
Waterloo Lake, White Lake, and Charlot River Power Projects are situated some 60 km west of Uranium City, Saskatchewan, on the north shore of Lake Athabasca.Waterloo Lake Dam is a simple zoned earth–rockfill structure with a wide central impervious core of silt. Since the first winter, frost penetration of the silt core has caused gradual deterioration of the dam. Pronounced longitudinal cracking and silt outflows have been evident along almost the entire length of the crest.Based on the experience gained from Waterloo Lake Dam and other northern projects the designs of the White Lake Dam and the Charlot River Dam incorporated safeguards against frost heave cracking of the core.This paper presents details of both in situ and laboratory test programs and the subsequent construction of the White Lake and Charlot River Dams. Keywords: bentonite, core material, frost, northern dam construction, plastic membrane.
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