We need to look at what is management and how it has changed. What was once considered good practice in farming in some areas is no longer considered good practice because you are losing soil. The same thing is happening in ranching and as we look at the way range management has changed in the last 30 years, it is really dramatic in what the goals and objectives are of those people that are on the land is to stay on the land.

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.