Subject Source: Library of Congress Subject Headings
Found in 3 Collections and/or Records:
Irrigation Research Papers
Abstract In 1911, the Irrigation Investigations Unit of the U.S. Department of Agriculture was established in Fort Collins in conjunction with Colorado Agricultural College (now Colorado State University). Scientists within the unit, including Ralph Parshall, Carl Rohwer, Victor M. Cone, and William E. Code, conducted irrigation-related research. They studied and designed apparatuses to measure water flow through canals and diversion structures, investigated various irrigation projects, and conducted...
Dates: 1890-1985; Majority of material found within 1920-1950
Photographs of the Natural Resources Conservation Service, Colorado Snow Survey Program
Abstract In 1935, Congress passed legislation funding a federal Snow Survey Program after a severe drought in the western United States. The purpose of the Natural Resources Conservation Service's Snow Survey Program is to provide mountain snowpack data and water supply forecasts for the western United States. The collection includes images of snow survey sites and equipment, agency employees, and public outreach events. Materials include slides, photographs,and film reels. A portion of the...
Dates: 1951-1996; Majority of material found within 1964-1991
Ralph L. Parshall Collection
Abstract Ralph Parshall contributed significantly to the field of irrigation engineering with the development of a flow-measuring device that became commonly known as the Parshall flume and continues to be widely used. Materials in the collection include Parshall's patent on his "Venturi flume water stage recording instruments," awards that Parshall received, publications, copies of talks he presented on KOA radio in Denver, and a number of lantern slides depicting flumes, weirs, plans, and...
Dates: 1888-1992; Majority of material found within 1921-1961