Illinois State Library

Electronic Documents of Illinois

Electronic Documents of Illinois

Document Identification

Users should pay particular attention to version identification or dates of publication of documents retrieved. Earlier, possibly superseded, versions of documents are also stored here.


  • Hydraulics of flow in the Kaskaskia River, Illinois


  • The hydraulics of flow was investigated at two reaches in the Kaskaskia River. The discharge varied from 58 to 4000 cubic feet per second and the flow frequency varied from 5 to 88 percent. The head loss varied from 0.96 feet/ mile for high flows to 1.98 feet/mile for low flows. The vertical velocity distribution was found to follow a logarithmic distribution. A theoretical distribution predicted the lateral velocity distribution in the bends reasonably well. In all, 79 isovels were developed for all flow conditions. The average value of the energy coefficient was 1.45 for straight reaches and 1.43 for bends. Similarly, the average value of the momentum coefficient was 1.22 for straight reaches and 1.18 for bends. Manning's roughness coefficient varied from 0.039 to 0.053. During low flows, the river flows through a series of pools and riffles. The median diameter of bed materials varied from 40 millimeters in the riffle to 0.04 millimeters in the pool, whereas the Froude number changed from 0.7 to 0.01. During high flows, the effect of the pool and riffle on the flow condition is minimal or nonexistent.

Originally Deposited as: 999999993954

Published By:
Phone Number:

Language(s): EN-English

Volume or Year: 1979
Number or Issue:

Date Created: 9 24 2004
Date Last Modified: 5 13 2003

Librarian Remarks:

Access This Publication

1. Hydraulics of flow in the Kaskaskia River, Illinois (20061006184747_ISWSRI-91.pdf).
Document Size:5703805 Software: Adobe Acrobat Version: 7.0