PC-HYDRO version 7.x is a web interface that executes the Pima County Hydrology Procedure equations and is now available. Rather than a stand-alone program installed on your local machine PC-HYDRO is available from the internet.
Download a spreadsheet to perform routing calculations for a design hydrograph through a stormwater detention/retention facility with a given facility geometry and outlet configuration was developed by the District for general distribution to the consulting community.