Below is a diagram created to explain to the Town of Snowflake’s town council how GIS was being used to contribute to the town’s drainage master plan for the Turley Subbasin in downtown Snowflake, AZ. All hydrologic and hydraulic analysis was done for planning purposes only.
Datasets were collected from the NRCS and USGS. All rainfall loss calculations were done in accordance with the latest Arizona Drainage Design Manuals using the rational method. Flow rate calculations were performed using a combination of archydro, HEC-GEOHMS, and HEC-HMS. Water surface elevations were calculated using HEC-RAS and HEC-GEORAS.