Home Response Drought Drought Actions: Colorado River Basin Drought Actions: Colorado River Basin This page lists drought actions for this basin during current drought conditions. Sept. 5, 2023, Letter to P.C. Singleton Aug. 29, 2023, Letter to P.C. Thomas Aug. 1, 2023, Letter to P.C. Donley August 17, 2022, Letter to P.C. Donley June 9, 2022, Letter to O.P. Leonard, Jr. Investment Company, Ltd.