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  • 118. Discharge Table and Proportion Table for Lake Canal, Fort Collins 

    Contributor:Cone, Victor M. (Victor Mann); United States. Department of Agriculture
    Date:1924-1926
    Date:undated
    Includes Farmers’ Bulletin 813: Construction and use of farm weirs by Victor M. Cone, Irrigation Engineer, Bureau of Public Roads. Typed and written tables: Discharge in second-feet per share or fraction there of according ...

  • 19. Professional Paper, Mms. Flow over Weirs with Sharp Crests and Full Contractions 

    Contributor:Murdock, Harvey E. (Harvey Ellison), -1956; Cone, Victor M. (Victor Mann); United States. Department of Agriculture
    Date:1914
    Date:undated
    Annotated draft of a professional paper: Flow over weirs with sharp crests (thin edges) and full contractions. The first page has been notated at the top-right with “V. M. Cone”. Letter from H. E. Murdock of Irrigation ...

  • 23. Rectangular Weir Tables -- Original and Revised 

    Contributor:Unknown
    Date:1915
    Date:undated
    Typed and handwritten tables pertaining to rectangular weirs

  • 22. Cipolletti Weir Tables -- Original and Revised 

    Contributor:Unknown
    Date:1915
    Date:undated
    Typed and handwritten tables pertaining to Cipolletti weirs

  • "Photographs" album 

    Contributor:Schuyler, James D. (James Dix), 1848-1912
    Date:1917-1921
    Primarily contains photographs of the Holly Dairy Days Parade and the Amity Canal Model Dairy Farm. Also includes images of Horse Creek, the Arkansas River and its June 1921 flood, May Valley Stream, Amity Dam, and the ...

  • "Snapshots with a pocket Kodak, showing the Amity Dam after the flood of August, 1902, also scenes about the Rocky Ford Sugar Factory, and illustrating the Rocky Ford Irrigation System." 

    Contributor:Schuyler, James D. (James Dix), 1848-1912
    Date:1902-08-13-1902-08-17
    Each photograph has a caption. One photograph is missing and one page is cut out. Images occasionally include people though few are identified except for Mr. W. M. Wiley and Mr. Wietzer.

  • 290. Mms. "Improved Venturi Flume," R.L. Parshall, 1927 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; United States. Department of Agriculture
    Date:1927
    Date:undated
    R.L. Parshall's paper, Improved Venturi Flume, was prepared under direction of W. W. McLaughlin, Associate Chief, Division of Agricultural Engineering, and includes photographs, diagrams, charts, tables, and a blueprint ...

  • 290. Printer's Copy, Improved Venturi Flume, Revised Dec. 1927 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; United States. Department of Agriculture
    Date:1927
    Date:undated
    Draft of R.L. Parshall's paper, Improved Venturi Flume, was prepared under direction of W. W. McLaughlin, Associate Chief, Division of Agricultural Engineering, with tables.

  • 292. Discussion of Paper by Yarnell and Nagler on Effect of Turbulence on Cup and Propeller Meters, 1930 

    Contributor:Yarnell, D. L.
    Date:1930
    Date:undated
    Two drafts of a discussion paper of Carl Rowher's Effect of Turbulence on the Registration of Current Meters; a letter from D. L. Yarnell, Senior Drainage Engineer, Bureau of Public Roads, United States Department of ...

  • 289. Radio Broadcast, Feb. 19, 1935, KOA, C. Rohwer 

    Contributor:Rohwer, Carl; Mitchelson, A. T.; McLaughlin, W. W.; United States. Department of Agriculture
    Date:1935
    Includes drafts of Carl Rohwer's, How to Get the Most out of a Limited Supply of Irrigation Water. A. T. Mitchelson, Senior Irrigation Engineer, Division of Irrigation, Bureau of Agricultural Engineering for the United ...

  • 286. Amity 20-Foot Flume, Notes Concerning New Floor, March 1938 

    Contributor:Burgess, L. T.; Parshall, Ralph L. (Ralph Leroy), 1881-1959; Hinderlider, M. C. (Michael Creed), 1876-1967; Colorado State College of Agriculture and Mechanic Arts
    Date:1937-1938
    Date:undated
    Contains a letter from L. T. Burgess, Chief Hydrographer for the Engineering Department of the State of Colorado, to Ralph Parshall concerning tabulations of snow survey measurements made at the east portal of Moffat Tunnel ...

  • 287. Laboratory Measurement of Evapo-transpiration Losses, R.L. Parshall, June 1937, Water Resources of Colorado, 1937 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; Ewing, Paul A.; Kittredge, Joseph, 1890-1971; United States. Department of Agriculture; Colorado Agricultural Experiment Station
    Date:1937
    Includes letters, marked drafts, and notes related to two included papers that R. L. Parshall presented at conventions: Laboratory measurement of evapo-transpiration losses and Irrigation water resources of Colorado. There ...

  • 285. Acre-Foot Integrating Instrument, May 1938 

    Contributor:Unknown
    Date:undated
    Envelope and tables concerning an acre-foot integrating instrument

  • 297. Publication Material Supporting Irrigation Research, 1934 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; McLaughlin, W. W.; Douglas, L. W.; Hays, Robert; Pointer, Vena; Colwell, Charles I.; Young, A. A.; United States. Department of Agriculture
    Date:1934
    Date:undated
    Multiple letters related to irrigation research and federal funding include: from Parshall to Rohwer; from W. W. McLaughlin to R. L. Parshall; from L. W. Douglas to Senator McAdoo; from Parshall to Lory and Rohwer; from ...

  • 284. Automatic Sand Sampling Device, 1939 

    Contributor:Unknown
    Date:undated
    Envelope and blueprint of the cycle of operation of an automatic sand sampling device

  • 295. Mms. "Large Parshall Measuring Flumes," R.L. Parshall, 1932 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; United States. Department of Agriculture; Colorado Agricultural Experiment Station
    Date:1931-1932
    Contains two copies of R. L. Parshall's report, Large Parshall Measuring Flumes, prepared under the direction of W. W. McLaughlin. One is an annotated draft and the other copy includes photographs.

  • 296. Submerged Flow Measurements on Bijou Flume, July 1932 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; Scobey, Fred C. (Frederick Charles), 1880-1962; McLaughlin, W. W.; United States. Department of Agriculture
    Date:1932
    Date:undated
    A field notebook with submerged flow measurements on the Bijou Flume by Parshall, Brooks, and McGraw; letters from W. W. McLaughlin to R. L. Parshall concerning the Bijou and Holbrook flumes, as well as the Fort Lyon Canal; ...

  • 294. Free-Flow Discharge Tables, Parshall Measuring Flumes, Large Size, 20 ft., 25 ft., 30 ft., 40 ft., and 50 ft. 

    Contributor:Unknown
    Date:undated
    Free-flow discharge tables of Parshall measuring flumes: 20 ft., 25 ft., 30 ft., 40 ft., and 50 ft.

  • 283. Elements of Q Curves, Fred C. Scobey 

    Contributor:Scobey, Fred C. (Frederick Charles), 1880-1962; Amsley, H. D.; Owens, A. Ralph; United States. Department of Agriculture
    Date:1933-1935
    Date:undated
    H. D. Amsley of the Fort Lyon Canal Company wrote letters to R. L. Parshall concerning a proposed pipeline across Horse Creek for the Fort Lyon canal. A. Ralph Owens of The Twin Lakes Reservoir and Canal Co. also wrote to ...

  • 247. Simplex Totalizing, Indicating Meter for Parshall Measuring Flume 

    Contributor:Glover, W. W.; Simplex Valve and Meter Co.
    Date:1935-1936
    Date:undated
    Letter, directions, blueprints, sales form, and packing list to R. L. Parshall from W. W. Glover of Simplex Valve and Meter Co. of Philadelphia concerning a Simplex-Parshall Venturi flume meter

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