• Venturi flume water stage recording instruments, patent no. 1417941 

        Contributor:Unknown
        Date:1922
        Patent no. 1417941 granted to Ralph L. Parshall for Venturi flume water-stage recording instruments for 17 years from May 13, 1922
      • Water stage recording instruments 

        Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
        Date:1923
        Letter and report on instruments used to record water levels
      • KOA radio talks 

        Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
        Date:1931-1935
        Text of talks given over K O A radio, including "Suggestion for Increasing Our Irrigation Water Supply," "Use of Water in Irrigation," "The Importance of Measuring Irrigation Water" "The Seriousness of Sand and Silt Deposit ...
      • Palmer-Bolus flume 

        Contributor:Unknown
        Date:1953
        Information on the Palmer-Bowlus flume, an adaptation of the Venturi flume, used primarily in sewers
      • Electrical precipitator 

        Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
        Date:1957
        Quotes from Ralph Parshall about his electrical precipitator
      • Burgess-Manning - Parshall correspondence 

        Contributor:Unknown
        Date:1959
        Correspondence between Ralph Parshall and the Burgess-Manning Company concerning the Pendant Vane Flow Meter, including bulletin and patent information for the Burgess-Manning Cast Iron Parshall Flume
      • Parshall flume 

        Contributor:Unknown
        Date:1959-1975
        Research by Sydney Davis and Victor Hauser concerning Parshall flumes and brochures for "Plasti-fab" fiberglass reinforced polyester Parshall flumes
      • Water flow structure (possibly weir) 

        Contributor:Unknown
        Date:undated
      • Ditch/flume 

        Contributor:Unknown
        Date:undated
        6 - Small lateral from rain ditch for direct use on farms; this particular lateral, however, shows the installation of a 3-foot improved Venturi flume.
      • Flume, in building 

        Contributor:Unknown
        Date:undated
        36 - 6-inch improved Venturi flume constructed of sheet metal, this provided with stillwell and indicating tape device.
      • Flume 

        Contributor:Unknown
        Date:undated
        16 - Hydraulic laboratory channel, Bellvue, Colorado
      • Vortex tube sand trap next to Irrigation Investigation building 

        Contributor:Unknown
        Date:undated
        Vortex tube sand trap in Jackson Ditch
      • Flume 

        Contributor:Unknown
        Date:undated
        49 - Discharge 550 second-feet thru 10-ft. improved Venturi flume. Holbrook ditch.
      • Flume 

        Contributor:Unknown
        Date:undated
        25 - Condition of flow in the converging section, 6-foot improved Venturi flume, Bellvue laboratory. This flow is of no submergence, the discharge being a function of the upper head, H(subscript)a.
      • Gasberg flume. Modesto. To be replaced by hydraulic fill 

        Contributor:Unknown
        Date:undated
      • Graph. Free flow discharge curve 

        Contributor:Unknown
        Date:undated
      • Drawing of flume 

        Contributor:Unknown
        Date:undated
      • Flume under construction 

        Contributor:Unknown
        Date:undated
        34 - 6-inch improved Venturi flume ready for installation, small lateral
      • Flume 

        Contributor:Unknown
        Date:undated
        48 - View showing flow conditions thru 10-ft. improved Venturi flume, Holbrook Canal near Rocky Ford
      • Water flowing through wooden structure 

        Contributor:Unknown
        Date:undated