Ranching was and is a distinct American culture with a distinct set of knowledge, values and beliefs. Many of those communities have been weakened by the relentless urbanization of Arizona, but now is the time to create new communities where environmentalists, hunters, birdwatchers, and hikers partner with ranchers to preserve and restore the open spaces we all cherish.

This Technical Data notebook has been prepared for a Letter of Map Revision application for a portion of the Via Entrada Wash located in Pima County, Arizona. The objective of the TDN and LOMR submission is provide regulatory discharge rates and floodplain limits along the Via Entrada Wash using better topographic, hydrologic, and hydraulic data.