Scope and Contents From the Collection: The Orson Winso Israelsen photograph collection consists of 1495 images that Israelsen used to document his long career as a irrigation engineer and drainage specialist. Included in the collection are images of flooding, laterals, flumes, headgates, culverts, canal and dam construction, water measuring equipment, weirs, erosion, diversions, culverts, reservoirs, and terracing. Most of the photographs were taken in Utah, but many are probably from adjoining states and a few are from Italy,...