A field survey of the lower Cedar River from Landsburg to Renton, WA was conducted on 29 April 2010 from a raft using real-time kinetic global positioning system to determine horizontal location and water surface elevation and a pressure transducer to measure depths along the thalweg of the river. These data were averaged over 100 m intervals to generate water surface elevations, river bed elevations, and depths at regular 10-meter intervals. The water surface and river bed gradients were calculated using the water surface elevations 10 m upstream and 10 m downstream of each point. Each point was assigned as a pool, riffle, or other type. Observations of salmon redds during the fall of 2010 are indicated.