Although the marshes associated with Bear Lake, the Bear River and the Great Salt Lake are noted for providing habitat for large concentrations of waterbirds, the status of the shorebirds (Charadrii) has not been well-documented in northern Utah. Because of their location in the arid Great Basin, these extensive marshes may be a critical staging area for many migratory shorebirds; in addition, they support substantial breeding populations of several species. As human demand for the limited water resource increases, information about the seasonal use of the wetlands by shorebirds becomes more urgent for consideration in water management decisions. This paper presents new information on the phenology of migration and nesting, and on the numerical status, of shorebirds in northern Utah.