; 106 Stat. 4809), for the purposes of addressing shoaling issues to minimize long-term maintenance costs. 216. Wilson Creek and Sloan Creek, Fairview, Texas Not later than 180 days after the date of enactment of this section, the Secretary shall submit to Congress a written status update regarding efforts to address flooding along Wilson Creek and Sloan Creek in the City of Fairview, Texas. 217. GAO study on mitigation for water resources development projects Not later than 18 months after the date of enactment of this Act, the Comptroller General of the United States shall— (1) conduct a study on the mitigation of the impact of water resources development projects, including the impact on fish and wildlife, consistent with the requirements of section 906 of the Water Resources Development Act of 1986 ( 33 U.S.C. 2283 ), section 307(a) of the Water Resources Development Act of 1990 ( 33 U.S.C. 2317(a) ), and section 2036(b) of the Water Resources Development Act of 2007 ( 33 U.S.C. 2283a ), including— (A) an evaluation of guidance or instructions issued, and other measures taken, by the Secretary to ensure successful mitigation of such impacts; (B) a review of the methods of mitigation, including the use of in-lieu fees, mitigation banking, and permittee-responsible mitigation, and their long-term effectiveness of restoring or mitigating ecosystem services impacted by such projects; (C) a review of how the use of the different mitigation methods for such projects varies across Corps of Engineers districts; (D) an assessment of the backlog of mitigation projects, including the number of mitigation projects pending completion to address such impacts resulting from constructed water resources development projects; (E) an evaluation of how the Secretary tracks compliance with the mitigation requirements across Corps of Engineers districts; (F) a review of how the mitigation requirements for water resources development projects contributes to the resilience of water resources in the United States