The Little Miami watershed (HUC 05090202) covers an area of approximately 2,680 square miles in southwestern Ohio, USA. It is characterized by a humid continental climate, with hot summers and cold winters. The hydrology of the watershed is dominated by the Little Miami River, which is a major tributary of the Ohio River. Surface water quality is generally good, with some localized issues related to agricultural runoff and wastewater discharge. The watershed is also home to several reservoirs, including Caesar Creek Lake and East Fork Lake, which provide drinking water, flood control, and recreational opportunities. Snowpack is typically low and sporadic in the region, with occasional winter storms leading to temporary accumulations. Climate trends in the Little Miami watershed include increasing temperatures and precipitation, as well as more frequent extreme weather events such as droughts and floods.