Skip to main content
USGS - science for a changing world

Discharge ratings for control gates at Mississippi River Lock and Dam 11, Dubuque, Iowa

Dates

Publication Date

Citation

Discharge ratings for control gates at Mississippi River Lock and Dam 11, Dubuque, Iowa; 1985; WRI; 85-4105; Heinitz, A. J.

Summary

The water level of the navigation pools on the Mississippi River are maintained by the operation of tainter and roller gates at locks and dams. Discharge ratings for the gates on Lock and Dam 11, Dubuque, Iowa, were developed from current-meter discharge measurements made in the forebays. Methodology is given to accurately compute the vertical gate openings of the tainter gates. Discharge coeffients, in equations that express discharge as a function of tailwater depth, headwater depth, and vertical height of gate opening, were determined for conditions of submerged-orifice and free-weir flow. A comparison of the rating discharges to the theoretical rating discharges is given for submerged orifice flow for the tainter and roller gates.

Contacts

Author :
A.J. Heinitz
Publisher :
U.S. Geological Survey

Attached Files

Click on title to download individual files attached to this item.

metadata8950404759298793172.xml
Potential Metadata Source

View
2.4 KB
Thumbnail
Thumbnail

Tags

Provenance

Data source
Harvester
Harvested on Thu Mar 31 04:24:32 MDT 2016 from MODS XML Service

Additional Information

Identifiers

Type Scheme Key
local-index unknown wri854105
local-pk unknown 27636
series unknown Water-Resources Investigations Report

Citation Extension

journalWater-Resources Investigations Report
parts
typePublication Place
valueIowa City
languageEnglish
citationTypeReport

Item Actions

View Item as ...

Save Item as ...

View Item...