* WHAT. Flooding caused by excessive rainfall is possible. * WHERE. Interior Kuskokwim Delta, Kuskokwim Valley, and northern Bristol Bay. * WHEN. From Monday morning through Thursday morning. * IMPACTS. Excessive rainfall and runoff may result in flooding of small streams, and other low-lying and flood-prone locations. Significant ponding of water, areal flooding, and erosion may occur in poor drainage areas. Flooding is not expected along the main Kuskokwim River and other major rivers. * ADDITIONAL DETAILS. - An atmospheric river will bring prolonged, widespread rainfall across Southwest Alaska this week. Steadier rainfall, which can be moderate to heavy at times, is expected to begin Monday and last through at least Wednesday with showers lingering through the rest of the week. Widespread rainfall totals of 1.5 to 3 inches is expected with locally higher amounts possible. This includes the communities around the Bethel area through Crooked Creek, and the Dillingham to Aleknagik area. The highest rainfall totals of at least 2.5 to 4 inches is expected close to the mountains near Togiak and the Western Capes. - Http://www.weather.gov/safety/flood