Parshall, Ralph L. (Ralph Leroy), 1881-1959.
Found in 3 Collections and/or Records:
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
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 various...
Dates: 1888-1992; Majority of material found within 1921-1961
The Water Resources Artifacts Collection aggregates objects acquired from several different sources. The collection includes a Thacher calculator, four water level recorders, a textile, a painting, and two water bottles.
- Flumes. 2
- Fort Collins (Colo.) 2
- Irrigation engineers. 2
- Parshall flumes. 2
- Photographs. 2
- San Luis Valley (Colo. and N.M.) 2
- Snow surveys. 2
- South Platte River Watershed (Colo. and Neb.) 2
- Weirs. 2
- Arkansas River Watershed. 1
- Artifacts. 1
- Cache la Poudre River (Colo.) 1
- Colorado River Watershed (Colo.-Mexico) 1
- Groundwater. 1
- Irrigation engineering. 1
- Irrigation pumps. 1
- Irrigation water. 1
- Lantern slides. 1
- Maps. 1
- Motion pictures (visual works). 1
- Negatives. 1
- Water -- Measurement. 1
- Water current meters. 1
- Wells. 1 ∧ less