The Lamine Watershed, located in central Missouri and encompassing approximately 421 square miles, is primarily an agricultural area with a few small urban communities. The watershed is characterized by rolling hills and plains and is drained by the Lamine River and its tributaries. The area experiences a humid continental climate with warm summers and cold winters, with annual precipitation averaging around 40 inches. The watershed is also prone to occasional flooding, particularly in the springtime. Snowpack is typically low, with average snowfall of around 19 inches per year. Surface water in the watershed is generally of good quality, but agricultural runoff can contribute to nutrient and sediment pollution. The main reservoir in the watershed is the Harry S. Truman Reservoir, which was created by damming the Osage River in the 1970s. There is some evidence of decreasing precipitation trends in the area over the past few decades, which could have implications for the watershed's hydrology and agricultural productivity.