The La Moine Watershed (HUC 07130010) encompasses an area of approximately 1,435 square miles in west-central Illinois. The watershed is characterized by a humid continental climate with hot summers and cold winters. The hydrology of the watershed is dominated by the La Moine River, which flows southeastward for approximately 135 miles until it joins the Illinois River. The watershed receives an average of 36 inches of precipitation per year, with most of this falling as rainfall. Snowfall is generally limited, with the watershed receiving an average of 19 inches of snow per year. The watershed contains several small reservoirs, which provide water for irrigation, recreation, and wildlife habitat. The surface water in the watershed is generally of good quality, but there are some areas where there is concern about agricultural runoff and other sources of pollution. Overall, the La Moine Watershed is an important resource for the people and wildlife of west-central Illinois.