S&P Global Ratings assigned its 'AAA' long-term rating to the Oklahoma Water Resources Board's (OWRB) approximately $14.2 series 2021B state loan program revenue bonds. At the same time, S&P Global Ratings affirmed its 'AAA' long-term rating on OWRB's state loan revenue bonds outstanding. The outlook is stable. The 2021B bond proceeds will be used to make loans to Tonkawa Municipal Authority and Hobart Public Works Authority. The bonds will be issued under the 2016 general bond resolution, bringing the total debt outstanding under the new resolution to about $435 million. Although not on parity with the rating on the bonds issued under the previous 1986 resolution, the ratings on these bonds and the previous bonds--issued under the 2016 resolution--equally benefit