Undertaken at the request of the Dept. of Agriculture, the field work for this report was intended to assess the possibilities of obtaining groundwater to supplement surface waters for irrigation in the Okanagan Valley. Included is a history of the late glacial period of the Okanagan Valley when the last of the Pleistocene ice sheet disappeared. Pleistocene studies provide basic data for the evaluation of groundwater resources, furnish information useful in engineering studies involving unconsolidated deposits, and directly aid pedological studies of agricultural and forest soils. The main body of the report deals with six map-areas showing the distribution of late glacial features with a description of each feature and an interpretation of its significance in relation to other features in that area.--Document.