Specifications include, but are not limited to: The New Mexico Office of the State Engineer/Interstate Stream Commission (OSE/ISC) is requesting competitive sealed proposals for river channel maintenance services. The contractor shall provide excavation and maintenance of the Elephant Butte Delta Channel through the delta and exposed sediment bottom of Elephant Butte Reservoir and other river maintenance and restoration work. Additionally, the OSE/ISC may request services to assist in constructing habitat restoration features to benefit the Rio Grande Silvery Minnow in selected locations within the Middle Rio Grande between Cochiti Reservoir and Elephant Butte Reservoir, New Mexico. All potential Offerors are to read, understand, and accept the requirements of this Request for Proposals (RFP).