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The first canals were made by the Hohokam people and they were smaller and built by hand, Lane said “The canals we have today are much larger, but they follow roughly the same contours,” he said. The project is a joint venture between SRP and the U.S. Bureau of Reclamation, as well as the state Historic Preservation Office, Duncan said. The first two signs were installed in Mesa and Gilbert, respectively, Lane said. A third sign was put in last Wednesday along the Western Canal in Tempe. The next sign is set to be installed on the South Bank at 64th Street. Duncan said the interpretive sign in Mesa was the first one installed and was put about one-quarter mile west of Horne Road in February. The sign in Gilbert was added in the spring about one-half mile south of Guadalupe Road, Duncan said. The next series of signs will be installed in Tempe over the next two weeks, Lane said.