Technical Abstract: TOPAZ (TOpographic PArameteriZation) is a software package for automated analysis of digital landscape topography. TOPAZ uses a raster digital elevation model to identify and measure topographic features, define surface drainage, subdivide watersheds along drainage divides, quantify the drainage network, and calculate representative subcatchment parameters. TOPAZ is designed primarily to assist with topographic evaluation and watershed parameterization in support of hydrologic modeling and analysis. TOPAZ can also be used to address a variety of geomorphological, environmental and remote sensing applications. The purpose of this report is to provide a brief overview of the methods used in TOPAZ; limitations and capabilities of the software; TOPAZ organization and operation; input requirements and output; and, available documentation.