UPPER DES PLAINES RIVER AND TRIBUTARIES, ILLINOIS.

SEC. 313. UPPER DES PLAINES RIVER AND TRIBUTARIES, ILLINOIS. The Secretary shall credit toward the non-Federal share of the cost of the study to determine the feasibility of improvements to the upper Des Plaines River and tributaries, phase 2, Illinois and Wisconsin, authorized by section 419 of the Water Resources Development Act of 1999 (113 Stat. 324), the cost of work carried out by the non-Federal interests before the date of execution of the study cost-sharing agreement if— (1) the Secretary and the non-Federal interests enter into a cost-sharing agreement for the study; and (2) the Secretary determines that the work is integral to the study.