Recent Submissions

  • 306. Mms. "Irrigation Wells," Carl Rohwer, 1936 

    Contributor:Rohwer, Carl
    Date:1934-1938
    Two drafts of "Irrigation Wells" by Carl Rohwer and associated notes. This report was published in 1940 as "Putting Down and Developing Wells for Irrigation." A brochure and a map for the Salt River Project, Arizona, is ...
  • 305. Yellow Copy, Mms. "Irrigation Wells," Carl Rohwer, 1936 

    Contributor:Rohwer, Carl
    Date:1936
    Draft of "Irrigation Wells" by Carl Rohwer and correspondence from irrigation experts, including O. W. Israelsen and M. R. Lewis, with suggested changes to the manuscript. This report was published in 1940 as "Putting Down ...
  • 304. Pencil Copy, Manuscript on Irrigation Wells, Carl Rohwer, December 1935 

    Contributor:Rohwer, Carl
    Date:1936
    Handwritten draft of "Irrigation Wells" by Carl Rohwer. This report was published in 1940 as "Putting Down and Developing Wells for Irrigation."
  • 302. Miscellaneous Data, Irrigation Well Report, Dec. 1935 

    Contributor:Rohwer, Carl
    Date:1932-1935
    Correspondence, proposed outlines, drilling and pumping machinery company brochures, The Johnson National Drillers' Journal, Vol. 7, No. 5 (September-October 1935), and data collected for Carl Rohwer's report "Irrigation ...
  • 303. Measuring Devices, Big Laramie River Basin, 1936 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959Hinderlider, M. C. (Michael Creed), 1876-1967;
    Date:1936
    Two memoranda by Ralph Parshall, "Memorandum Concerning Suggestions and Recommendations for Headgates and Measuring Devices for Ditches in the Big Laramie River Basin in Colorado" and "Memorandum Relative to Improvements ...
  • 300. Mms. "The Parshall Measuring Flume," 1935, folder 2 of 2 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
    Date:1937-1938
    Ralph Parshall's June 1935 revisions of his 1928 report "The Improved Venturi Flume." He renamed the 1935 version "The Parshall Flume."
  • 301. Pipe Flume, 1935 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; Palmer, Harold K.; Bowlus, Fred D.; American Society of Civil Engineers
    Date:1932-1935
    Proceedings of the American Society of Civil Engineers, Vol. 61, No. 7 (September 1935), which includes "Adaptation of Venturi Flumes to Flow Measurements in Conduits" by Harold K. Palmer and Fred D. Bowlus. Ralph Parshall's ...
  • 312. Matters Concerning Cooperative Agreement Projects [between Colorado Agricultural Experiment Station and USDA Soil Conservation Service], 1939 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959Christensen, N. A. (Nephi Albert), 1903-; McLaughlin, W. W.;
    Date:1936
    Date:1939-1940
    Correspondence, drafts, and documents setting up cooperative agreement projects between Colorado Agricultural Experiment Station and the U.S. Department of Agriculture Soil Conservation Service. Also included are two ...
  • 311. Drawing of Suite of Offices in Civil [Engineering] Building 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
    Date:undated
    Floor plan of the north side of the Civil and Irrigation Engineering building first floor containing the Bureau of Agricultural Engineering Irrigation Investigations offices
  • 300. Mms. "The Parshall Measuring Flume," 1935, folder 1 of 2 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
    Date:1927-1935
    Drafts of Ralph Parshall's 1935 report "The Parshall Flume," a revision of "The Improved Venturi Flume" (1928), and correspondence from irrigation experts, including Fred C. Scobey and George R. Boyd, with suggested changes ...
  • 310. Correspondence on Irrigation and Drainage Research Association, Asilomar, Pacific Grove, California, June 30, 1938 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959Lewis, M. R. (Mortimer Reed), 1886-;
    Date:1938
    Correspondence organizing and announcing the June 30, 1938, biennial meeting of the Western Irrigation and Drainage Research Association at Asilomar, Pacific Grove, California
  • 308. North Sterling Reservoir Outlet, 20-Foot Parshall Measuring Flume, Oct. 1937 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959Schnurr, Clark E.; Wright, R. J.;
    Date:1937-1938
    Data and correspondence between Ralph Parshall and R. J. Wright, Superintendent of North Sterling Irrigation District, concerning a 20-foot Parshall flume installed in the North Sterling Reservoir (Point of Rocks Reservoir) ...
  • 309. State Planning Notes and Data, 1937 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959; Anderson, F. A. (Fridtjof A.); Colorado. Agricultural Clearing Committee
    Date:1937
    Colorado Agricultural Clearing Committee and Water Storage and Water Conservation Subcommittee meeting minutes and reports as well as an announcement for the Fourth Pacific Northwest Regional Planning Conference in Portland, ...
  • 299. Pumping Bulletin Data, 1932 

    Contributor:Rohwer, CarlTaylor, Arthur; Code, W. E. (William E.), 1891-;
    Date:1922
    Date:1930-1934
    Correspondence, data, forms, and reports collected by Carl Rohwer for his report "Irrigation Wells." Reports include "Well Drilling Southern California Gravel Envelope Versus Standard Wells" by Arthur Taylor and "Report ...
  • 307. Pingree Park Reservoir, 1936 

    Contributor:Unknown
    Date:1936
    Map of survey and volume calculations for a proposed Pingree Park Reservoir on Cascade Creek in northern Colorado
  • 321. Colorado-Big Thompson Diversion Project Will Bring Another Poudre River to Northern Colorado Lands 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
    Date:undated
    Carbon copy of Parshall's article "Colorado-Big Thompson Diversion Project Will Bring Another Poudre River to Northern Colorado Lands." A more legible copy can be found in folder, "96. R.L. Parshall, folder 2 of 3" of this ...
  • 321. Grand Lake Project 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959Edwards, A. A.; Lory, Charles Alfred, 1872-1969;
    Date:1910
    Date:1937
    "To the Stockholders of the Water Supply and Storage Company" by A. A. Edwards, "Conservation of Water in Colorado" by Charles A. Lory, "A Digest of House Bill No. 714, A Bill for an Act to Provide for the Organization of ...
  • Grand Lake - Big Thompson Report 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
    Date:1935
    Ralph Parshall's planning notes for the Grand Lake Project (Colorado-Big Thompson Project)
  • 321. Grand Lake Project 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959
    Date:1925-1926
    Date:1935-1937
    Handwritten draft of "Memorandum Concerning the Economic Features of the Colorado-Big Thompson Project" by Ralph Parshall and associated data, graphs, and notes
  • 320. Colorado-Big Thompson Report, W.H. Sawhill 

    Contributor:Parshall, Ralph L. (Ralph Leroy), 1881-1959Sawhill, W. H.;
    Date:1933-1936
    Notes and data collected by Ralph Parshall and W. H. Sawhill for reports assessing "the distribution of available irrigation water of the area under irrigation, the crops grown under the several canal systems and of land ...

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