The Lower Canadian Walnut Watershed, HUC 11090202, covers an area of approximately 283 square miles in central Indiana. The area is characterized by a moderate climate with an average annual precipitation of 41 inches. The watershed feeds the Walnut Creek, a major tributary of the White River. The snowpack in the area is generally low, with an average of 6 inches in January. The surface water in the watershed is heavily impacted by agricultural activities, with high levels of phosphorus and nitrogen commonly found. The reservoir in the watershed, Geist Reservoir, provides drinking water to the Indianapolis metropolitan area. Interestingly, the watershed has experienced a trend of increased precipitation in recent years, with a 20% increase in annual precipitation from 1991 to 2017. This increase has led to increased flooding in the area.