The Calamus River is a tributary of the Loup River located in central Nebraska, USA. It flows through the scenic landscapes of the region, providing a vital water source for local wildlife and communities. The river is approximately 50 miles long and is known for its winding path and natural beauty. The Calamus Reservoir, created by a dam on the river, is a popular recreational area for fishing, boating, and camping. The reservoir supports various fish species, making it a favored spot for anglers. The surrounding area also offers opportunities for hiking and wildlife observation.