The Cedar watershed (HUC 10130205) spans across approximately 155 square miles in eastern Iowa. The watershed is characterized by a humid continental climate with warm summers and cold winters. The area receives an average annual precipitation of 30-35 inches, with snowfall occurring primarily from December through February. The Cedar River, which runs through the watershed, serves as the primary source of surface water, supplying water to Cedar Rapids, Iowa's second-largest city. The watershed's high precipitation levels and winter snowpack contribute to the Cedar River's consistent flow, making it an important resource for municipal, industrial, and agricultural purposes. The river also serves as a source of recreation, attracting outdoor enthusiasts throughout the year. The Cedar Reservoir, located within the watershed, serves as a source of drinking water for the surrounding communities. The watershed's hydrological and climatic characteristics make it an important resource for the region's economy and ecology.