ArcGIS Methods for Automated Hydrology and Hydraulics Table Production

Hydrology and hydraulic (H&H) tables are critical for evaluating land cover, curve number (CN), and hydrologic changes in pre and post development conditions. Traditionally, their production requires significant and time intensive manual effort, particularly for large sites (500 acres or greater). Established methods require the engineer to perform highly sequenced repetitive steps based on few differing inputs. This study presents a custom ArcGIS Pro toolbox composed of two Python- based scripts that automate drainage area delineation, CN raster generation, and H&H table production.