Maps have come a long way. Historic maps of the Slough were drawn by hand. They provide a rare snapshot into the Slough's past and how humans have altered the landscape over time.
Geographic information systems or GIS emerged in the 1970 and 80s. GIS changed forever the way maps were created and analyzed. GIS is a tool that manages, analyzes, and models data from our environment so that we can make decisions based on that information to better study changes over time, conserve and restore important resources, and protect biodiversity into the future.
How maps are used at the slough.