From EcoCat's description of the study:
"Summary of seepage studies for South Okanagan Lands Project, 1950. Includes introduction, general background and farm descriptions, area description including climate, soils, use of irrigation water, seepage, relation of stratum survey to geology of area, hydrogeology, groundwater survey results, analysis of present and future problems, re-use of irrigation water, conclusions, tables and figures, BC Department of Agriculture, 44 pages, NTS Map 082E04"

See the Study [PDF]. Note: scanned copy of original document.