REDUCING ICE FORMATION AT NAVIGATION DAMS

Increasing the turbulence at the movable gates of the Mississippi River Navigation Dams in the St. Paul District by discharging over bulkheads during the winter rather than under the gates has prevented severe icing at the dam. This study has shown that movement of the gates has been facilitated substantially, but maintenance costs on the bulkheads have increased. Providing aeration facilities, culverts through the earth dams and slots through emergency spillways has increased dissolved oxygen in downstream slackwaters and has benefitted fish life by reducing stagnation. Additional aeration is possible by improving facilitations.

• Supplemental Notes:
  • Abstract from American Society of Civil Engineers Publications Abstracts, Volume 7, Number 4, July-August 1972.
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Harich, H W
• Publication Date: 1972-8

Media Info

• Pagination: p. 343-355
• Serial:
  • Journal of Waterways, Harbors & Coast Eng Div
  • Volume: 98
  • Issue Number: WW3
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Ecosystems; Force; Ice; Ice formations; Ice prevention
• Old TRIS Terms: Ecological effects; Ice forces on structures
• Subject Areas: Environment; Marine Transportation;

Filing Info

• Accession Number: 00035944
• Record Type: Publication
• Source Agency: American Society of Civil Engineers
• Report/Paper Numbers: 9114 Proceeding
• Files: TRIS
• Created Date: Oct 20 1972 12:00AM