In August 2014, the Legislature approved Chapter 188, Statutes of 2014 (AB 1471, Rendon), which placed before the voters a water bond measure primarily aimed at increasing the supply of clean, safe, and reliable water and restoring habitat. On November 4, 2014, voters approved the water bond measure—Proposition 1. In this report, we (1) describe Proposition 1, (2) review the Governor’s proposals to implement the bond, (3) identify key implementation principles, and (4) recommend steps for the Legislature to ensure that the bond is implemented effectively.