Des Moines, Iowa experiences a humid continental climate with cold winters and warm summers. The city is located along the Des Moines River and is a part of the larger Mississippi River watershed. Water quality in the Des Moines River has been a concern due to elevated levels of nitrates from agricultural runoff. Outdoor recreation opportunities in the area include the scenic Des Moines River Trail, which offers hiking and biking, as well as kayaking and fishing in the river. The city also has several parks and green spaces, including Gray's Lake Park, which features a beach, boat rentals, and a popular walking trail around the lake.