"In 1987, a Maricopa County property tax to support implementation of
the Rio Salado concept was put to public vote. The proposal was
defeated in Phoenix and other municipalities because of concerns
about the original billion-dollar estimated project cost, lack of benefits
to outlying communities, and impacts on neighborhoods and adjacent
property owners. Tempe was the only municipality to approve the
property tax. Subsequently, Tempe moved forward with development
of Tempe Town Lake using inflatable dams and relying on local,
county, state, and federal funding sources."
Source (PDF):
https://www.phoenix.gov/pddsite/Docu..._pdf_00064.pdf