This dataset contains the 10 most common geomorphon forms for an approximately 500 meter (m) reach of the Kalamazoo River upstream of Plainwell, Michigan (MI), in raster and polygon format. Geomorphons are a terrain analysis approach that identify 3-dimensional forms in a landscape based on comparison of the relative elevations of a central pixel to the pixels in its surrounding viewshed. The approach breaks down a landscape into it's component forms (flat, summit, ridge, shoulder, spur, slope, hollow, footslope, valley, and depression), which can serve as a basis for interpreting distinct hydrogeomorphic units and processes associated with them (Jasiewicz and Stepinski, 2013). Polygon features were developed from the original raster output, and are slightly simplified to remove small (<5 square meters) landforms. The geomorphons were developed from a digital elevation model (DEM) comprising topographic and bathymetric data for the Plainwell reach, developed from elevation data collected by several different methods. Bathymetric data in the river channel were collected in October, 2021 with a single beam sonar and Acoustic Current Doppler Profiler operated along two longitudinal transects and 48 cross-sectional transects, respectively. River bank topographic data were collected with a backpack-mounted terrestrial lidar unit concurrently with the bathymetric data. Floodplain elevations were obtained from aerial lidar data collected in 2015. All ground points from the respective datasets were projected to the same coordinate system and used to generate a DEM with 1m resolution covering the channel bed, banks, and floodplain, and valley walls through the reference reach. Jasiewicz, J., & Stepinski, T.F.. 2013. Geomorphons — a Pattern Recognition Approach to Classification and Mapping of Landforms. Geomorphology 182: 147–56. https://doi.org/10.1016/j.geomorph.2012.11.005.