Near its terminus, the Mojave River flows out onto a large inland delta called the Mojave River Wash at the western edge of Mojave National Preserve. During heavy flows, the river reaches Soda Lake near Baker at the north end of the Wash, and has reached Silver Lake, even further north, in historic times. For example, during the unusually wet winter of 2004–2005, the Mojave River flowed on the surface all the way to Silver Lake and filled both Soda and Silver Lakes to a depth of several feet.