The U.S. Geological Survey is offering a cooperative agreement opportunity for a partner affiliated with the Colorado Plateau Cooperative Ecosystem Studies Unit (CESU) to conduct research on sediment resources and channel substrates in the Colorado River at Grand Canyon National Park. The primary objectives of this research include monitoring fine sediment storage, assessing the impacts of high-flow experiments on sand conservation, and analyzing the dynamics of sand transport in relation to dam operations. This research is crucial for understanding the ecological health of the Colorado River ecosystem and supporting habitat modeling efforts. Interested applicants must submit their proposals electronically by 5:00 p.m. ET on April 5, 2024, with funding amounts ranging from $99,320 to $499,999. For further inquiries, contact Faith Graves at fgraves@usgs.gov.