S&P Global Ratings assigned its 'AA-' rating on Trinity River Authority (TRA) Texas' approximately $28.6 million series 2021 revenue improvement and refunding bonds, issued for the Red Oak Creek project. At the same time, S&P Global Ratings affirmed its 'AA-' rating on TRA's Red Oak Creek Project, Texas' outstanding revenue improvement bonds, issued for the Red Oak Creek system, a regional wastewater treatment system. The outlook is stable. The series 2021 proceeds will be used to fund capital projects, including additional peak-flow storage, interceptor upgrades, and rehabilitation. TRA is a governmental agency of the state of Texas tasked with, among other functions, water flows, water quality, recreation, and watershed management along a more-than-700-mile basin that extends from about the Oklahoma