Lake Rita Blanca is the northernmost state park in Texas, located in Hartley County on the south side of Dalhart. It consists of about 1700 acres, including Lake Rita Blanca. Rita Blanca means "Little White River" and comes from the Spanish sheepherders who inhabited the area in the mid 1800's. The name was later adopted by the XIT Ranch. In the 1880s, the XIT was the largest range in the world under fence.
There are no entrance fees to the park. Approved activities include hiking, horseback riding and bicycling. Motorized vehicles are not permitted to this day-use park.