The CUHP file format is a specialized data format associated with the Colorado Urban Hydrograph Procedure (CUHP), a hydrological modeling tool developed by the Urban Drainage and Flood Control District (now the Mile High Flood District) in Colorado. This file format is used to store input parameters, catchment characteristics, and hydrological data required to simulate urban runoff and generate hydrographs for drainage basins. It typically contains information regarding basin area, imperviousness, slope, soil types, and rainfall distribution patterns. Engineers and hydrologists use these files within the CUHP software environment to perform complex calculations that predict how urban development affects stormwater runoff, which is critical for designing flood control infrastructure, storm sewers, and detention ponds. Because the format is highly specific to the CUHP software suite, it is not a general-purpose data format and is rarely encountered outside of professional civil engineering and water resources management contexts. The data structure is designed to interface directly with the computational engine of the CUHP software, ensuring that the hydrological parameters are correctly interpreted for peak flow analysis and hydrograph routing.