Columbus Junction is a small city located in Louisa County, Iowa. The climate is typically continental with warm summers and cold winters. The city lies at the confluence of the Iowa and Cedar Rivers, which can lead to occasional flooding. The Cedar River is a significant source of drinking water for the city, and the hydrology constituents are monitored closely to ensure safe and clean water supply. Outdoor recreation opportunities in the area include hiking, fishing, and boating at nearby parks such as Lake Odessa and the Iowa River Corridor. The area is also known for its annual Louisa County Fair, which features a variety of agricultural exhibits, carnival rides, and live entertainment.