Form N-Q

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549

FORM N-Q


QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number         811-09161         

        Nuveen California Dividend Advantage Municipal Fund         
(Exact name of registrant as specified in charter)


        333 West Wacker Drive, Chicago, Illinois 60606         
(Address of principal executive offices) (Zip code)


Jessica R. Droeger—Vice President and Secretary
        333 West Wacker Drive, Chicago, Illinois 60606         
(Name and address of agent for service)

Registrant's telephone number, including area code:         312-917-7700        

Date of fiscal year end:            08/31          

Date of reporting period:          05/31/05         

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget (“OMB”) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

Item 1. Schedule of Investments

                   Portfolio of Investments (Unaudited)             
 
                   Nuveen California Dividend Advantage Municipal Fund (NAC)             
                   May 31, 2005             
 
 
 
 
Principal        Optional Call        Market 
Amount (000)    Description(1)    Provisions*    Ratings**    Value 
 
    Consumer Staples - 5.6% (3.8% of Total Investments)             
$ 5,000    California Statewide Community Development Authority, Certificates of Participation, Pride    11/09 at 102.00    N/R    $ 5,284,100 
    Industries and Pride One Inc., Series 1999, 7.250%, 11/01/29             
5,200    Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds,    6/13 at 100.00    BBB    5,513,508 
    Series 2003A-1, 6.250%, 6/01/33             
    Northern California Tobacco Securitization Authority, Tobacco Settlement Asset-Backed Bonds, Series             
    2001A:             
2,500    5.250%, 6/01/31    6/11 at 100.00    BBB    2,446,225 
4,500    5.375%, 6/01/41    6/11 at 100.00    BBB    4,401,900 
3,135    Southern California Tobacco Securitization Authority, Tobacco Settlement Asset-Backed Bonds, Senior    6/12 at 100.00    BBB    3,170,864 
    Series 2001A, 5.250%, 6/01/27             
 
    Education and Civic Organizations - 10.3% (7.1% of Total Investments)             
615    California Statewide Community Development Authority, Revenue Bonds, Notre Dame de Namur    10/13 at 100.00    N/R    637,521 
    University, Series 2003, 6.500%, 10/01/23             
3,000    Long Beach Bond Financing Authority, California, Lease Revenue Refunding Bonds, Long Beach Aquarium    11/11 at 100.00    AAA    3,351,570 
    of the South Pacific, Series 2001, 5.500%, 11/01/17 - AMBAC Insured             
700    University of California, Certificates of Participation, San Diego and Sacramento Campus Projects,    1/10 at 101.00    Aa2    741,671 
    Series 2002A, 5.250%, 1/01/22             
6,000    University of California, Revenue Bonds, Multiple Purpose Projects, Series 2000K, 5.000%, 9/01/12    9/08 at 101.00    AA    6,425,460 
    University of California, Revenue Bonds, Multi-Purpose Projects, Series 2002O:             
10,770    5.000%, 9/01/20 - FGIC Insured    9/10 at 101.00    AAA    11,466,065 
11,305    5.000%, 9/01/21 - FGIC Insured    9/10 at 101.00    AAA    12,035,642 
3,500    University of California, Revenue Bonds, Multi-Purpose Projects, Series 2003A, 5.125%, 5/15/17 -    5/13 at 100.00    AAA    3,858,680 
    AMBAC Insured             
 
    Healthcare - 11.6% (8.0% of Total Investments)             
15,000    California Health Facilities Financing Authority, Revenue Bonds, Cedars-Sinai Medical Center,    12/09 at 101.00    A3    16,384,200 
    Series 1999A, 6.125%, 12/01/30             
2,160    California Health Facilities Financing Authority, Health Facility Revenue Bonds, Adventist Health    3/13 at 100.00    A    2,289,298 
    System/West, Series 2003A, 5.000%, 3/01/15             
530    California Statewide Community Development Authority, Revenue Bonds, Daughters of Charity Health    7/15 at 100.00    BBB+    561,254 
    System, Series 2005A, 5.250%, 7/01/24             
8,000    Central California Joint Powers Health Finance Authority, Certificates of Participation, Community    2/10 at 101.00    Baa2    8,424,240 
    Hospitals of Central California Obligated Group, Series 2000, 6.000%, 2/01/30             
10,500    Duarte, California, Certificates of Participation, City of Hope National Medical Center, Series    4/09 at 101.00    BBB+    10,738,770 
    1999A, 5.250%, 4/01/31             
2,155    Upland, California, Certificates of Participation, San Antonio Community Hospital, Series 1993,    7/05 at 101.00    A-    2,170,107 
    5.250%, 1/01/08             
2,500    Whittier, California, Health Facility Revenue Bonds, Presbyterian Intercommunity Hospital, Series    6/12 at 101.00    A    2,692,950 
    2002, 5.600%, 6/01/22             
 
    Housing/Multifamily - 7.1% (4.9% of Total Investments)             
7,250    California Statewide Community Development Authority, Revenue Refunding Bonds, Irvine Apartment    7/08 at 101.00    BBB    7,519,700 
    Communities Development, Series 1998A, 4.900%, 5/15/25 (Mandatory put 5/15/08)             
5,235    California Statewide Community Development Authority, GNMA Collateralized Housing Revenue Refunding    8/12 at 105.00    Aaa    5,893,929 
    Bonds, Crowne Pointe Project, Series 2002F, 6.750%, 8/20/37             
5,000    Contra Costa County, California, Multifamily Housing Revenue Bonds, Delta View Apartments Project,    6/09 at 102.00    N/R    5,157,500 
    Series 1999C, 6.750%, 12/01/30 (Alternative Minimum Tax)             
7,500    San Bernardino County Housing Authority, California, Multifamily Housing Revenue Refunding Bonds,    No Opt. Call    BBB+    7,936,800 
    Equity Residential Properties/Redlands Lawn and Tennis Apartments, Series 1999A, 5.200%, 6/15/29             
    (Mandatory put 6/15/09)             
 
    Long-Term Care - 2.4% (1.7% of Total Investments)             
8,500    Riverside County Public Financing Authority, California, Certificates of Participation, Air Force    5/09 at 101.00    BBB-    8,840,425 
    Village West, Series 1999, 5.800%, 5/15/29             
 
    Tax Obligation/General - 23.3% (16.0% of Total Investments)             
    California, General Obligation Refunding Bonds, Series 2002:             
8,000    5.000%, 2/01/12    No Opt. Call    A    8,750,480 
4,435    6.000%, 4/01/16 - AMBAC Insured    No Opt. Call    AAA    5,344,973 
    California, General Obligation Bonds, Series 2003:             
2,000    5.250%, 11/01/19 - RAAI Insured    11/13 at 100.00    AA    2,184,580 
5,200    5.250%, 2/01/20    8/13 at 100.00    A    5,734,820 
    California, General Obligation Bonds, Series 2004:             
5,000    5.125%, 4/01/23    4/14 at 100.00    A    5,374,400 
4,150    5.125%, 4/01/25    4/14 at 100.00    A    4,432,200 
2,335    Los Angeles Community College District, Los Angeles County, California, General Obligation Bonds,    8/15 at 100.00    AAA    2,507,160 
    Series 2005A, 5.000%, 6/01/26 - FSA Insured             
18,500    Los Angeles Unified School District, California, General Obligation Bonds, Series 1999C, 5.250%,    7/09 at 101.00    AAA    19,902,485 
    7/01/24 - MBIA Insured             
10,845    Los Angeles Unified School District, California, General Obligation Bonds, Series 2002E, 5.000%,    7/12 at 100.00    AAA    11,768,886 
    7/01/19 - MBIA Insured             
3,335    Moreno Valley Unified School District, Riverside County, California, General Obligation Bonds,    8/14 at 100.00    AAA    3,691,211 
    Series 2004A, 5.250%, 8/01/21 - FSA Insured             
1,750    Oakland Unified School District, Alameda County, California, General Obligation Bonds, Series 2001,    8/08 at 101.00    AAA    1,853,390 
    5.125%, 8/01/21 - FSA Insured             
5,000    San Diego Unified School District, San Diego County, California, General Obligation Bonds, Series    7/13 at 101.00    AAA    5,650,950 
    2003E, 5.250%, 7/01/20 - FSA Insured             
    San Jose-Evergreen Community College District, Santa Clara County, California, General Obligation             
    Bonds, Series 2005A:             
600    5.000%, 9/01/25 - MBIA Insured    9/15 at 100.00    AAA    646,086 
880    5.000%, 9/01/27 - MBIA Insured    9/15 at 100.00    AAA    943,017 
2,560    Southwestern Community College District, San Diego County, California, General Obligation Bonds,    8/14 at 100.00    AAA    2,749,619 
    Series 2004, 5.000%, 8/01/23 - FGIC Insured             
1,300    Ventura County Community College District, California, General Obligation Bonds, Series 2002A,    8/12 at 101.00    AAA    1,427,101 
    5.000%, 8/01/15 - MBIA Insured             
3,605    West Contra Costa Unified School District, Contra Costa County, California, General Obligation    8/11 at 101.00    AAA    3,836,477 
    Bonds, Series 2003B, 5.000%, 8/01/21 - FSA Insured             
 
    Tax Obligation/Limited - 37.9% (26.1% of Total Investments)             
    Beaumont Financing Authority, California, Local Agency Revenue Bonds, Series 2004D:             
1,000    5.500%, 9/01/24    9/14 at 102.00    N/R    1,020,520 
615    5.800%, 9/01/35    9/14 at 102.00    N/R    629,489 
    Brentwood Infrastructure Financing Authority, Contra Costa County, California, Capital Improvement             
    Revenue Bonds, Series 2001:             
1,110    5.375%, 11/01/18 - FSA Insured    11/11 at 100.00    AAA    1,230,801 
1,165    5.375%, 11/01/19 - FSA Insured    11/11 at 100.00    AAA    1,291,787 
1,990    Brentwood Infrastructure Financing Authority, California, Infrastructure Revenue Refunding Bonds,    9/12 at 100.00    AAA    2,121,221 
    Series 2002A, 5.125%, 9/02/24 - FSA Insured             
7,400    California, Economic Recovery Revenue Bonds, Series 2004A, 5.000%, 7/01/15    7/14 at 100.00    AA-    8,169,230 
2,000    Capistrano Unified School District, Orange County, California, Special Tax Bonds, Community    9/13 at 100.00    N/R    2,145,540 
    Facilities District 90-2 - Talega, Series 2003, 6.000%, 9/01/33             
3,490    Fontana, California, Senior Special Tax Refunding Bonds, Heritage Village Community Facilities    9/08 at 102.00    AAA    3,781,590 
    District 2, Series 1998A, 5.250%, 9/01/17 - MBIA Insured             
1,125    Fontana, California, Special Tax Bonds, Sierra Community Facilities District 22, Series 2004,    9/14 at 100.00    N/R    1,164,004 
    6.000%, 9/01/34             
3,980    Garden Grove, California, Certificates of Participation, Financing Project, Series 2002A, 5.500%,    3/12 at 101.00    AAA    4,405,104 
    3/01/22 - AMBAC Insured             
540    Hesperia Community Redevelopment Agency, California, Tax Allocation Bonds, Series 2005A, 5.000%,    9/15 at 100.00    AAA    583,357 
    9/01/20 (WI, settling 6/07/05) - XLCA Insured             
4,500    Inglewood Redevelopment Agency, California, Tax Allocation Refunding Bonds, Merged Area    No Opt. Call    AAA    5,138,415 
    Redevelopment Project, Series 1998A, 5.250%, 5/01/23 - AMBAC Insured             
2,000    Lee Lake Water District, Riverside County, California, Special Tax Bonds, Community Facilities    9/13 at 102.00    N/R    2,176,760 
    District 1 of Sycamore Creek, Series 2003, 6.500%, 9/01/24             
2,200    Lincoln, California, Special Tax Bonds, Lincoln Crossing Community Facilities District 03-1, Series    9/13 at 102.00    N/R    2,380,246 
    2003A, 6.500%, 9/01/25             
1,500    Lincoln, California, Special Tax Bonds, Lincoln Crossing Community Facilities District 03-1, Series    9/13 at 102.00    N/R    1,568,190 
    2004, 6.000%, 9/01/34             
5,000    Los Angeles County Metropolitan Transportation Authority, California, Proposition C Second Senior    7/08 at 101.00    AAA    5,262,200 
    Lien Sales Tax Revenue Refunding Bonds, Series 1998A, 5.000%, 7/01/23 - AMBAC Insured             
3,555    Los Angeles County Public Works Financing Authority, California, Revenue Bonds, Regional Park and    10/07 at 101.00    AA    3,732,679 
    Open Space District, Series 1997A, 5.000%, 10/01/16             
1,530    Moreno Valley Unified School District, Riverside County, California, Certificates of Participation,    3/14 at 100.00    AAA    1,629,710 
    Series 2005, 5.000%, 3/01/24 - FSA Insured             
9,200    Norco Redevelopment Agency, California, Tax Allocation Refunding Bonds, Project Area 1, Series    3/11 at 102.00    AAA    9,856,144 
    2001, 5.000%, 3/01/19 - MBIA Insured             
5,545    Oakland Joint Power Financing Authority, California, Lease Revenue Refunding Bonds, Oakland    No Opt. Call    AAA    6,392,609 
    Convention Centers, Series 2001, 5.500%, 10/01/14 - AMBAC Insured             
3,290    Oakland Redevelopment Agency, California, Subordinate Lien Tax Allocation Bonds, Central District    3/13 at 100.00    AAA    3,686,840 
    Redevelopment Project, Series 2003, 5.500%, 9/01/16 - FGIC Insured             
4,000    Orange County Local Transportation Authority, California, Limited Sales Tax Revenue Refunding    No Opt. Call    AAA    4,298,200 
    Bonds, Measure M, Series 1997A, 5.700%, 2/15/08 - AMBAC Insured             
5,600    Palm Springs Financing Authority, California, Lease Revenue Refunding Bonds, Convention Center    11/11 at 101.00    AAA    5,945,968 
    Project, Series 2001A, 5.000%, 11/01/22 - MBIA Insured             
1,000    Palmdale Community Redevelopment Agency, California, Tax Allocation Bonds, Merged Redevelopment    12/14 at 100.00    AAA    1,069,820 
    Project Areas, Series 2004, 5.000%, 12/01/24 - AMBAC Insured             
8,100    Poway Redevelopment Agency, California, Tax Allocation Refunding Bonds, Paguay Redevelopment    12/10 at 102.00    AAA    9,104,643 
    Project, Series 2000, 5.750%, 6/15/33 - MBIA Insured             
1,055    Poway Redevelopment Agency, California, Tax Allocation Bonds, Paguay Redevelopment Project, Series    12/11 at 101.00    AAA    1,181,199 
    2001, 5.375%, 12/15/16 - AMBAC Insured             
1,860    Riverside Redevelopment Agency, California, Tax Allocation Refunding Bonds, Merged Project Areas,    8/13 at 100.00    AAA    2,026,600 
    Series 2003, 5.250%, 8/01/22 - MBIA Insured             
5,795    Riverside County Public Financing Authority, California, Junior Lien Reassessment Revenue Bonds,    No Opt. Call    N/R    5,921,968 
    Rancho Villages Project, Series 1999B, 6.000%, 9/02/07             
1,725    Rohnert Park Finance Authority, California, Senior Lien Revenue Bonds, Rancho Feliz Mobile Home    9/13 at 100.00    BBB    1,752,669 
    Park, Series 2003A, 5.750%, 9/15/38             
1,120    Rohnert Park Finance Authority, California, Subordinate Lien Revenue Bonds, Rancho Feliz Mobile    9/13 at 100.00    N/R    1,175,866 
    Home Park, Series 2003B, 6.625%, 9/15/38             
2,500    Sacramento City Financing Authority, California, Lease Revenue Refunding Bonds, Series 1993A,    No Opt. Call    AAA    2,920,250 
    5.400%, 11/01/20 - AMBAC Insured             
1,150    Sacramento, California, Special Tax Bonds, North Natomas Community Facilities District 4, Series    9/14 at 100.00    N/R    1,228,522 
    2003C, 6.000%, 9/01/33             
24,060    San Jose Redevelopment Agency, California, Tax Allocation Bonds, Merged Area Redevelopment Project,    8/08 at 102.00    A    25,050,791 
    Series 1998, 5.250%, 8/01/29             
2,695    San Jose Financing Authority, California, Lease Revenue Refunding Bonds, Civic Center Project,    6/12 at 100.00    AAA    2,977,652 
    Series 2002B, 5.250%, 6/01/19 - AMBAC Insured             
1,595    San Marcos Public Facilities Authority, California, Special Tax Bonds, Community Facilities    9/09 at 102.00    N/R    1,657,460 
    District 99-1, Series 2003B, 6.000%, 9/01/24             
2,810    West Patterson Financing Authority, California, Special Tax Bonds, Community Facilities District    9/13 at 103.00    N/R    3,105,247 
    01-1, Series 2003B, 7.000%, 9/01/38             
1,350    West Patterson Financing Authority, California, Special Tax Bonds, Community Facilities District    9/13 at 103.00    N/R    1,402,718 
    2001-1, Series 2004A, 6.125%, 9/01/39             
2,000    West Patterson Financing Authority, California, Special Tax Bonds, Community Facilities District    9/13 at 102.00    N/R    2,051,340 
    01-1, Series 2004B, 6.000%, 9/01/39             
 
    Transportation - 19.6% (13.5% of Total Investments)             
8,150    Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Refunding Bonds,    1/10 at 101.00    BBB-    8,358,885 
    Series 1999, 5.750%, 1/15/40             
8,515    Los Angeles Harbors Department, California, Revenue Refunding Bonds, Series 2001B, 5.500%, 8/01/18    8/11 at 100.00    AAA    9,306,129 
    (Alternative Minimum Tax) - AMBAC Insured             
23,000    Port of Oakland, California, Revenue Bonds, Series 2000K, 5.750%, 11/01/29 (Alternative Minimum    5/10 at 100.00    AAA    24,880,940 
    Tax) - FGIC Insured             
5,000    San Francisco Airports Commission, California, Revenue Bonds, San Francisco International Airport,    5/06 at 101.00    AAA    5,146,300 
    Second Series Issue 13B, 5.625%, 5/01/21 (Alternative Minimum Tax) - MBIA Insured             
23,275    San Francisco Airports Commission, California, Revenue Bonds, San Francisco International Airport,    5/10 at 101.00    AAA    25,370,681 
    Second Series 2000, Issue 24A, 5.750%, 5/01/30 (Alternative Minimum Tax) - FSA Insured             
 
    U.S. Guaranteed *** - 9.1% (6.2% of Total Investments)             
8,400    California Health Facilities Financing Authority, Revenue Bonds, Kaiser Permanente System, Series    10/08 at 101.00    AAA    9,058,476 
    1998B, 5.250%, 10/01/14 (Optional put 10/01/08)             
4,245    Los Angeles County Public Works Financing Authority, California, Revenue Bonds, Regional Park and    10/07 at 101.00    AA***    4,499,615 
    Open Space District, Series 1997A, 5.000%, 10/01/16 (Pre-refunded to 10/01/07)             
    Orange County Water District, California, Revenue Certificates of Participation, Series 1999A:             
5,840    5.375%, 8/15/29    8/09 at 101.00    AA+***    6,696,670 
8,160    5.375%, 8/15/29 (Pre-refunded to 8/15/09)    8/09 at 101.00    AA+***    9,027,816 
4,000    Puerto Rico, General Obligation and Public Improvement Bonds, Series 2000, 5.750%, 7/01/16    7/10 at 100.00    AAA    4,479,880 
    (Pre-refunded to 7/01/10) - MBIA Insured             
 
    Utilities - 11.4% (7.8% of Total Investments)             
    California Department of Water Resources, Power Supply Revenue Bonds, Series 2002A:             
2,500    5.375%, 5/01/17 - XLCA Insured    5/12 at 101.00    AAA    2,794,725 
9,750    5.125%, 5/01/18    5/12 at 101.00    A2    10,508,453 
3,630    Imperial Irrigation District, California, Certificates of Participation, Electric System Revenue    11/13 at 100.00    AAA    3,958,225 
    Bonds, Series 2003, 5.250%, 11/01/23 - FSA Insured             
7,000    Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2001A-1,    7/11 at 100.00    AAA    7,562,240 
    5.250%, 7/01/21 - FSA Insured             
8,370    Los Angeles Department of Water and Power, California, Power System Revenue Refunding Bonds, Series    7/11 at 100.00    AAA    9,225,330 
    2001A-2, 5.375%, 7/01/19 - MBIA Insured             
1,200    Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series 2003A-2,    7/13 at 100.00    AAA    1,301,372 
    5.000%, 7/01/21 - MBIA Insured             
7,000    Merced Irrigation District, California, Revenue Refunding Bonds, Electric System Project, Series    9/05 at 102.00    Baa3    7,173,530 
    2001, 6.750%, 9/01/31             
 
    Water and Sewer - 7.1% (4.9% of Total Investments)             
11,000    California Department of Water Resources, Water System Revenue Bonds, Central Valley Project,    12/11 at 100.00    AAA    11,977,130 
    Series 2001W, 5.250%, 12/01/22 - FSA Insured             
8,250    Pico Rivera Water Authority, California, Revenue Bonds, Series 2001A, 6.250%, 12/01/32    12/11 at 102.00    N/R    8,948,033 
5,115    San Francisco City and County Public Utilities Commission, California, Water Revenue Bonds, Series    11/12 at 100.00    AAA    5,568,649 
    2002A, 5.000%, 11/01/18 - MBIA Insured             

$ 503,600    Total Long-Term Investments (cost $505,240,344) - 145.4%    541,820,642 
 
    Other Assets Less Liabilities - 1.6%    5,870,107 
 
    Preferred Shares, at Liquidation Value - (47.0)%    (175,000,000) 
 
    Net Assets Applicable to Common Shares - 100%    $372,690,749 
 
 
 
(1)    All percentages shown in the Portfolio of Investments are based on net assets applicable to Common shares     
    unless otherwise noted.     
*    Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There     
    may be other call provisions at varying prices at later dates.     
**    Ratings: Using the higher of Standard & Poor's or Moody's rating.     
***    Securities are backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency     
    securities which ensures the timely payment of principal and interest. Such securities are normally considered     
    to be equivalent to AAA rated securities.     
N/R    Investment is not rated.     
(WI)    Security purchased on a when-issued basis.     
 
    Income Tax Information     
 
    The following information is presented on an income tax basis. Differences between amounts for financial statement     
    and federal income tax purposes are primarily due to timing differences in recognizing income on taxable market     
    discount securities and timing differences in recognizing certain gains and losses on investment transactions.     
 
    At May 31, 2005, the cost of investments was $505,042,984.     
 
    Gross unrealized appreciation and gross unrealized depreciation of investments at May 31, 2005, were as     
    follows:     
 
    Gross unrealized:     
       Appreciation    $36,797,075 
       Depreciation    (19,417) 
 
    Net unrealized appreciation of investments    $36,777,658 

Item 2. Controls and Procedures.

  1. The registrant's principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).
  2. There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: EX-99 CERT Attached hereto.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)         Nuveen California Dividend Advantage Municipal Fund        

By (Signature and Title)*          /s/ Jessica R. Droeger--Vice President and Secretary        

Date         07/29/05        

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)*         /s/ Gifford R. Zimmerman--Chief Administrative Officer (principal executive officer)        

Date         07/29/05        

By (Signature and Title)*         /s/ Stephen D. Foy--Vice President and Controller (principal financial officer)        

Date         07/29/05        

* Print the name and title of each signing officer under his or her signature.