33 CFR 207.425 - Calumet River, Ill.; Thomas J. O'Brien Lock and Controlling Works and the use, administration and navigation of the lock.

§ 207.425 Calumet River, Ill.; Thomas J. O'Brien Lock and Controlling Works and the use, administration and navigation of the lock.

(a)Controlling Works.

(1) The controlling works shall be so operated that the water level at the downstream end of the lock will be maintained at a level lower than that of Lake Michigan, except in times of excessive storm run-off into the Illinois Waterway, or when the lake level is below minus 2 feet, Chicago City Datum.

(2) The elevation to be maintained at the downstream end of the lock shall at no time be higher than minus 0.5 feet, Chicago City Datum, and at no time lower than minus 2.0 feet, Chicago City Datum, except as noted in paragraph (a)(1) of this section.

(b)Lock -

(1)Operation. The Thomas J. O'Brien Lock and Dam is part of the Illinois Waterway which is a tributary of the Mississippi River. All rules and regulations defined in § 207.300, Ohio River, Mississippi River above Cairo, Illinois, and their tributaries; use, administration and navigation shall apply.

[ 40 FR 57358, Dec. 9, 1975]

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United States Code
Statutes at Large

Title 33 published on 03-May-2017 03:57

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 33 CFR Part 207 after this date.

  • 2013-12-27; vol. 78 # 249 - Friday, December 27, 2013
    1. 78 FR 78717 - Reservoirs at Headwaters of the Mississippi River; Use and Administration
      GPO FDSys XML | Text
      DEPARTMENT OF DEFENSE, Department of the Army, Corps of Engineers
      Final rule.
      Effective Date: January 27, 2014.
      33 CFR Part 207