Control-structure ratings on the Chicago Sanitary and Ship Canal near Lockport, Illinois

Straub, Timothy D.; Johnson, Kevin K.; Hortness, Jon E.; Duncker, James J.

Abstract:

The U.S. Army Corps of Engineers and the Metropolitan Water Reclamation District of Greater Chicago regulate flows through control structures along the Lake Michigan lakefront and the Chicago Sanitary and Ship Canal (CSSC) for Lake Michigan diversion accounting, flood control, sanitary, and navigation purposes. This report documents the measurement and computation of flow through the Lockport Controlling Works (LCW) and the Lockport Powerhouse. This analysis aided in evaluation of the ratings at both structures, and the development of new ratings at the controlling works. The LCW structure consists of seven 30-feet (ft) wide sluice gates and is used to divert water from the CSSC and into the Des Plaines River. The flow regimes for the sluice gate included both free and submerged weir. Forty and 491 flow values from U.S. Geological Survey streamflow-gaging stations were used to develop equations describing free- and submerged-weir flow, respectively, through the sluice gates. The equations were developed for canal headwater elevations ranging from -7.0 to -10.5 ft Chicago City Datum (CCD), and tailwater (Des Plaines River at Lockport) to headwater (CSSC-LCW-Base) ratios ranging from 0.31 to 0.66. The Lockport Powerhouse structure consists of nine 9-ft wide by 14-ft high sluice gates and two 10-ft diameter turbines. Both tailwater and no-tailwater effect flow regimes occurred during nine measurements. Also, the canal headwater elevations ranged from -2.74 to -8.45 ft CCD, and the gates were configured six different ways during the measurements.

Genre:

USGS Numbered Series

ProdID:

70039439

Citation Author:

Straub, Timothy D.; Johnson, Kevin K.; Hortness, Jon E.; Duncker, James J.

Citation Contributing Office:

Illinois Water Science Center

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Citation Language:

English

Citation Larger Work Title:

Citation LatN:

0421500

Citation LatS:

0413000

Citation LonE:

-0873000

Citation LonW:

-0881500

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Citation Phsyical Description:

vi, 25 p.

Citation Projection:

Albers Equal-Area Conic Projection

Citation Public Comments:

Prepared in cooperation with the U.S. Army Corps of Engineers

Citation Publisher:

U.S. Geological Survey

Citation Series:

Scientific Investigations Report

Citation Series Code:

SIR

Citation Series Number:

2012-5131

Citation Search Results Text:

Control-structure ratings on the Chicago Sanitary and Ship Canal near Lockport, Illinois; 2012; SIR; 2012-5131; Straub, Timothy D.; Johnson, Kevin K.; Hortness, Jon E.; Duncker, James J.

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Citation Year:

2012

Type:

citation/reference

Text:

Control-structure ratings on the Chicago Sanitary and Ship Canal near Lockport, Illinois; 2012; SIR; 2012-5131; Straub, Timothy D.; Johnson, Kevin K.; Hortness, Jon E.; Duncker, James J.