. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 831 Contribution from the Bureau of Public Roads THOMAS H. MacDONALD, Chief Washington, D. C. PROFESSIONAL PAPER August 25,1920 AND CANALS By A. T. MITCHELSON, Senior Irrigation Engineer CONTENTS Page Spillways ..,.1 Overflow Spillways 4 Spillway Control 9 Fiashboards .11 Sliding Gates . 11 Tilting Counterweighted Gates 12 Roiling Dams or Barriers 13 Siphon Spillways 15 U. S. Reclamation Service Siphons 28 European Practice 31 Huntington Lake Siphon Spillway 32 Concl
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 831 Contribution from the Bureau of Public Roads THOMAS H. MacDONALD, Chief Washington, D. C. PROFESSIONAL PAPER August 25,1920 AND CANALS By A. T. MITCHELSON, Senior Irrigation Engineer CONTENTS Page Spillways ..,.1 Overflow Spillways 4 Spillway Control 9 Fiashboards .11 Sliding Gates . 11 Tilting Counterweighted Gates 12 Roiling Dams or Barriers 13 Siphon Spillways 15 U. S. Reclamation Service Siphons 28 European Practice 31 Huntington Lake Siphon Spillway 32 Conclusions . 38 Acknowledgments 40. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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