Umpqua River - Koepke Slough UV IndexUnited StatesORDouglas CountyUmpqua River - Koepke Slough1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAUmpqua River - Koepke Slough UV forecast issued today at 6:47 pm. Next forecast at approx. 6:47 pm.Get an account to remove ads