Nuveen California Quality Income Municipal Fund, Inc. (the Fund) is a closed-ended, investment company. The Fund seeks to provide current income exempt from both regular federal and California state income taxes by investing primarily in a portfolio of municipal obligations issued by state and local government authorities within the state of California or certain United States territories. The Fund invests all of its assets in a diversified portfolio of tax-exempt California municipal obligations rated within the four highest grades (Baa/BBB or better). Up to 20% of the Fund's assets may be invested in unrated California municipal obligation, which are considered to be of comparable quality. The Funds' investment adviser is Nuveen Fund Advisors, Inc. (Nuveen Fund Advisors), formerly Nuveen Asset Management.