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         811-09449         

        Nuveen Insured 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:         11/30/06         

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 Insured California Dividend Advantage Municipal Fund (NKL)             
    November 30, 2006             
Principal        Optional Call         
Amount (000)    Description (1)    Provisions (2)    Ratings (3)    Value 
    Consumer Staples – 2.3% (1.5% of Total Investments)             
$          4,500    Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed    6/13 at 100.00    BBB   $   5,538,195 
     Revenue Bonds, Series 2003A-2, 7.900%, 6/01/42             
    Education and Civic Organizations – 4.7% (3.2% of Total Investments)             
1,675    California Educational Facilities Authority, Revenue Bonds, University of San Diego, Series    10/12 at 100.00    A2    1,766,422 
     2002A, 5.250%, 10/01/30             
9,000    California State University, Systemwide Revenue Bonds, Series 2002A, 5.125%, 11/01/26 – AMBAC    11/12 at 100.00    AAA    9,606,870 
     Insured             
10,675    Total Education and Civic Organizations            11,373,292 
    Health Care – 5.1% (3.4% of Total Investments)             
5,000    ABAG Finance Authority for Non-Profit Corporations, California, Cal-Mortgage Insured Revenue    4/12 at 100.00    A    5,384,450 
     Bonds, Sansum-Santa Barbara Medical Foundation Clinic, Series 2002A, 5.600%, 4/01/26             
2,815    California Health Facilities Financing Authority, Revenue Bonds, Lucile Salter Packard    8/13 at 100.00    AAA    3,003,774 
     Children’s Hospital, Series 2003C, 5.000%, 8/15/20 – AMBAC Insured             
3,380    Rancho Mirage Joint Powers Financing Authority, California, Revenue Bonds, Eisenhower Medical    7/14 at 100.00    A3    3,801,621 
     Center, Series 2004, 5.875%, 7/01/26             
11,195    Total Health Care            12,189,845 
    Housing/Multifamily – 1.3% (0.9% of Total Investments)             
1,000    California Statewide Community Development Authority, Student Housing Revenue Bonds, EAH –    8/12 at 100.00    A    1,064,660 
     Irvine East Campus Apartments, LLC Project, Series 2002A, 5.500%, 8/01/22 – ACA Insured             
1,905    Los Angeles, California, GNMA Mortgage-Backed Securities Program Multifamily Housing Revenue    7/11 at 102.00    AAA    2,010,423 
     Bonds, Park Plaza West Senior Apartments, Series 2001B, 5.300%, 1/20/21 (Alternative             
     Minimum Tax)             
2,905    Total Housing/Multifamily            3,075,083 
    Housing/Single Family – 0.3% (0.2% of Total Investments)             
555    California Housing Finance Agency, Home Mortgage Revenue Bonds, Series 2006H, 5.750%,    2/16 at 100.00    AAA    601,581 
     8/01/30 – FGIC Insured (Alternative Minimum Tax)             
    Industrials – 1.3% (0.9% of Total Investments)             
3,000    California Pollution Control Financing Authority, Solid Waste Disposal Revenue Bonds, Republic    No Opt. Call    BBB+    3,242,280 
     Services Inc., Series 2002C, 5.250%, 6/01/23 (Mandatory put 12/01/17) (Alternative Minimum Tax)             
    Long-Term Care – 3.5% (2.4% of Total Investments)             
3,000    ABAG Finance Authority for Non-Profit Corporations, California, Insured Senior Living Revenue    11/12 at 100.00    A    3,171,690 
     Bonds, Odd Fellows Home of California, Series 2003A, 5.200%, 11/15/22             
5,000    California Statewide Community Development Authority, Revenue Bonds, Jewish Home for the    11/13 at 100.00    A    5,281,100 
     Aging, Series 2003, 5.000%, 11/15/18             
8,000    Total Long-Term Care            8,452,790 
    Tax Obligation/General – 30.3% (20.1% of Total Investments)             
5,920    Cajon Valley Union School District, San Diego County, California, General Obligation Bonds,    8/10 at 102.00    AAA    6,291,243 
     Series 2002B, 5.125%, 8/01/32 – MBIA Insured             
2,900    California, General Obligation Bonds, Series 2003, 5.000%, 2/01/21    8/13 at 100.00    A+    3,093,488 
1,750    California, General Obligation Bonds, Series 2004, 5.125%, 2/01/27    2/14 at 100.00    A+    1,876,647 
8,250    California, General Obligation Refunding Bonds, Series 2002, 5.000%, 2/01/22 – MBIA Insured    2/12 at 100.00    AAA    8,680,567 
2,560    Compton Community College District, Los Angeles County, California, General Obligation Bonds,    7/14 at 100.00    AAA    2,811,418 
     Series 2004A, 5.250%, 7/01/23 – MBIA Insured             
230    El Monte Union High School District, Los Angeles County, California, General Obligation Bonds,    6/13 at 100.00    AAA    244,407 
     Series 2003A, 5.000%, 6/01/28 – FSA Insured             
10,000    Fremont Unified School District, Alameda County, California, General Obligation Bonds, Series    8/12 at 101.00    AAA    10,680,800 
     2002A, 5.000%, 8/01/25 – FGIC Insured             
    Los Angeles Unified School District, California, General Obligation Bonds, Series 2003A:             
3,700     5.000%, 7/01/22 – FSA Insured    7/13 at 100.00    AAA    3,949,787 
3,500     5.000%, 1/01/28 – MBIA Insured    7/13 at 100.00    AAA    3,725,785 
4,115    Los Angeles Unified School District, California, General Obligation Bonds, Series 2006B,    7/16 at 100.00    AAA    4,360,295 
     4.750%, 7/01/24 – FGIC Insured (UB)             
1,000    Los Rios Community College District, Sacramento, El Dorado and Yolo Counties, California,    8/14 at 102.00    AAA    1,085,390 
     General Obligation Bonds, Series 2006C, 5.000%, 8/01/25 – FSA Insured             
1,500    Madera Unified School District, Madera County, California, General Obligation Bonds, Series    8/12 at 100.00    AAA    1,587,030 
     2002, 5.000%, 8/01/28 – FSA Insured             
2,500    Oakland Unified School District, Alameda County, California, General Obligation Bonds, Series    8/12 at 100.00    AAA    2,714,375 
     2002, 5.250%, 8/01/21 – FGIC Insured             
375    Roseville Joint Union High School District, Placer County, California, General Obligation    8/15 at 100.00    AAA    403,504 
     Bonds, Series 2006B, 5.000%, 8/01/27 – FGIC Insured             
3,250    San Diego Unified School District, San Diego County, California, General Obligation Bonds,    7/11 at 102.00    AAA    3,514,778 
     Election of 1998, Series 2001C, 5.000%, 7/01/22 – FSA Insured             
1,960    San Diego Unified School District, San Diego County, California, General Obligation Bonds,    7/16 at 101.00    AAA    2,012,538 
     Series 2006G-1, 4.500%, 7/01/29 – FSA Insured (UB)             
1,160    San Gabriel Unified School District, Los Angeles County, California, General Obligation Bonds,    8/15 at 100.00    AAA    1,258,820 
     Series 2005, 5.000%, 8/01/22 – FSA Insured             
3,500    San Mateo County Community College District, California, General Obligation Bonds, Series    9/12 at 100.00    AAA    3,705,730 
     2002A, 5.000%, 9/01/26 – FGIC Insured             
10,000    Vista Unified School District, San Diego County, California, General Obligation Bonds, Series    8/12 at 100.00    AAA    10,611,600 
     2002A, 5.000%, 8/01/23 – FSA Insured             
68,170    Total Tax Obligation/General            72,608,202 
    Tax Obligation/Limited – 42.7% (28.6% of Total Investments)             
1,450    Baldwin Park Public Financing Authority, California, Sales Tax and Tax Allocation Bonds,    8/13 at 102.00    BBB    1,542,612 
     Puente Merced Redevelopment Project, Series 2003, 5.250%, 8/01/21             
6,895    Brea and Olinda Unified School District, Orange County, California, Certificates of    8/11 at 101.00    AAA    7,289,877 
     Participation Refunding, Series 2002A, 5.125%, 8/01/26 – FSA Insured             
2,290    Burbank Public Financing Authority, California, Revenue Refunding Bonds, Golden State    12/13 at 100.00    AAA    2,499,237 
     Redevelopment Project, Series 2003A, 5.250%, 12/01/19 – AMBAC Insured             
2,200    California Infrastructure Economic Development Bank, Los Angeles County, Revenue Bonds,    9/13 at 101.00    AAA    2,346,036 
     Department of Public Social Services, Series 2003, 5.000%, 9/01/28 – AMBAC Insured             
3,100    California State Public Works Board, Lease Revenue Bonds, Department of Health Services,    11/15 at 100.00    AAA    3,310,149 
     Richmond Lab, Series 2005B, 5.000%, 11/01/30 – XLCA Insured             
465    Capistrano Unified School District, Orange County, California, Special Tax Bonds, Community    9/15 at 100.00    AAA    501,344 
     Facilities District, Series 2005, 5.000%, 9/01/24 – FGIC Insured             
1,400    Chino Redevelopment Agency, California, Merged Chino Redevelopment Project Area Tax Allocation    9/16 at 101.00    AAA    1,514,926 
     Bonds, Series 2006, 5.000%, 9/01/38 – AMBAC Insured (UB)             
7,035    Corona-Norco Unified School District, Riverside County, California, Special Tax Bonds,    9/13 at 100.00    AAA    7,449,432 
     Community Facilities District 98-1, Series 2003, 5.000%, 9/01/28 – MBIA Insured             
3,145    Culver City Redevelopment Agency, California, Tax Allocation Revenue Bonds, Redevelopment    5/11 at 101.00    AAA    3,315,270 
     Project, Series 2002A, 5.125%, 11/01/25 – MBIA Insured             
8,720    El Monte, California, Senior Lien Certificates of Participation, Department of Public Services    1/11 at 100.00    AAA    9,080,485 
     Facility Phase II, Series 2001, 5.000%, 1/01/21 – AMBAC Insured             
4,000    Folsom Public Financing Authority, California, Special Tax Revenue Bonds, Series 2004A,    9/12 at 102.00    AAA    4,289,680 
     5.000%, 9/01/21 – AMBAC Insured             
355    Hesperia Community Redevelopment Agency, California, Tax Allocation Bonds, Series 2005A,    9/15 at 100.00    AAA    384,110 
     5.000%, 9/01/20 – XLCA Insured             
2,115    Inglewood Redevelopment Agency, California, Tax Allocation Refunding Bonds, Merged Area    No Opt. Call    AAA    2,428,993 
     Redevelopment Project, Series 1998A, 5.250%, 5/01/23 – AMBAC Insured             
3,500    La Quinta Redevelopment Agency, California, Tax Allocation Bonds, Redevelopment Project Area 1,    9/11 at 102.00    AAA    3,726,205 
     Series 2001, 5.100%, 9/01/31 – AMBAC Insured             
3,400    La Quinta Redevelopment Agency, California, Tax Allocation Bonds, Redevelopment Project Area 1,    9/12 at 102.00    AAA    3,643,134 
     Series 2002, 5.000%, 9/01/22 – AMBAC Insured             
845    Los Angeles Community Redevelopment Agency, California, Lease Revenue Bonds, Manchester Social    9/15 at 100.00    Aaa    899,443 
     Services Project, Series 2005, 5.000%, 9/01/37 – AMBAC Insured             
4,690    Los Angeles County Metropolitan Transportation Authority, California, Proposition C Second    7/08 at 101.00    AAA    4,821,320 
     Senior Lien Sales Tax Revenue Refunding Bonds, Series 1998A, 5.000%, 7/01/23 –             
     AMBAC Insured             
1,460    Los Angeles, California, Certificates of Participation, Municipal Improvement Corporation,    6/13 at 100.00    AAA    1,542,446 
     Series 2003AW, 5.000%, 6/01/33 – AMBAC Insured             
7,000    Los Angeles, California, Certificates of Participation, Series 2002, 5.200%, 4/01/27 – AMBAC    4/12 at 100.00    AAA    7,422,800 
     Insured             
8,470    Ontario Redevelopment Financing Authority, California, Lease Revenue Bonds, Capital Projects,    8/11 at 101.00    AAA    9,062,392 
     Series 2001, 5.200%, 8/01/29 – AMBAC Insured             
5,000    Palm Desert Financing Authority, California, Tax Allocation Revenue Refunding Bonds, Project    4/12 at 102.00    AAA    5,313,300 
     Area 1, Series 2002, 5.000%, 4/01/25 – MBIA Insured             
405    Rialto Redevelopment Agency, California, Tax Allocation Bonds, Merged Project Area, Series    9/15 at 100.00    AAA    431,094 
     2005A, 5.000%, 9/01/35 – XLCA Insured             
4,475    Riverside County, California, Asset Leasing Corporate Leasehold Revenue Bonds, Riverside    6/12 at 101.00    AAA    4,771,424 
     County Hospital Project, Series 1997B, 5.000%, 6/01/19 – MBIA Insured             
505    Roseville, California, Certificates of Participation, Public Facilities, Series 2003A, 5.000%,    8/13 at 100.00    AAA    534,128 
     8/01/25 – AMBAC Insured             
3,175    San Buenaventura, California, Certificates of Participation, Series 2001C, 5.250%, 2/01/31 –    2/11 at 101.00    AAA    3,365,945 
     AMBAC Insured             
3,730    San Diego Redevelopment Agency, California, Subordinate Lien Tax Increment and Parking Revenue    9/09 at 101.00    Baa2    3,879,163 
     Bonds, Centre City Project, Series 2003B, 5.250%, 9/01/26             
4,000    San Jose Financing Authority, California, Lease Revenue Refunding Bonds, Convention Center    9/11 at 100.00    AAA    4,243,320 
     Project, Series 2001F, 5.000%, 9/01/19 – MBIA Insured             
1,000    Shasta Joint Powers Financing Authority, California, Lease Revenue Bonds, County    4/13 at 100.00    AAA    1,075,960 
     Administration Building Project, Series 2003A, 5.250%, 4/01/23 – MBIA Insured             
2,160    Temecula Redevelopment Agency, California, Tax Allocation Revenue Bonds, Redevelopment    8/08 at 102.00    AAA    2,245,601 
     Project 1, Series 2002, 5.125%, 8/01/27 – MBIA Insured             
96,985    Total Tax Obligation/Limited            102,929,826 
    Transportation – 4.9% (3.3% of Total Investments)             
7,500    Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Refunding    1/14 at 101.00    BBB–    6,946,950 
     Bonds, Series 1999, 0.000%, 1/15/29             
    San Francisco Airports Commission, California, Revenue Bonds, San Francisco International             
    Airport, Second Series 2003, Issue 29A:             
2,185     5.250%, 5/01/16 – FGIC Insured (Alternative Minimum Tax)    5/13 at 100.00    AAA    2,348,460 
2,300     5.250%, 5/01/17 – FGIC Insured (Alternative Minimum Tax)    5/13 at 100.00    AAA    2,472,063 
11,985    Total Transportation            11,767,473 
    U.S. Guaranteed – 19.3% (12.9% of Total Investments) (4)             
6,000    California Department of Water Resources, Power Supply Revenue Bonds, Series 2002A, 5.125%,    5/12 at 101.00    Aaa    6,550,380 
     5/01/18 (Pre-refunded 5/01/12)             
    California Health Facilities Financing Authority, Revenue Bonds, Cedars-Sinai Medical Center,             
    Series 1999A:             
2,500     6.125%, 12/01/30 (Pre-refunded 12/01/09)    12/09 at 101.00    A3 (4)    2,715,500 
1,000     6.250%, 12/01/34 (Pre-refunded 12/01/09)    12/09 at 101.00    A3 (4)    1,089,590 
2,250    California Infrastructure Economic Development Bank, First Lien Revenue Bonds, San Francisco    1/28 at 100.00    AAA    2,601,698 
     Bay Area Toll Bridge, Series 2003A, 5.000%, 7/01/36 (Pre-refunded 1/01/28) – AMBAC Insured             
2,185    El Monte Union High School District, Los Angeles County, California, General Obligation Bonds,    6/13 at 100.00    Aaa    2,381,431 
     Series 2003A, 5.000%, 6/01/28 (Pre-refunded 6/01/13) – FSA Insured             
    Fresno Unified School District, Fresno County, California, General Obligation Bonds, Series 2002B:             
1,135     5.125%, 8/01/23 – FGIC Insured (ETM)    8/10 at 102.00    AAA    1,210,614 
1,190     5.125%, 8/01/24 – FGIC Insured (ETM)    8/10 at 102.00    AAA    1,269,278 
1,245     5.125%, 8/01/25 – FGIC Insured (ETM)    8/10 at 102.00    AAA    1,329,274 
1,255     5.125%, 8/01/26 – FGIC Insured (ETM)    8/10 at 102.00    AAA    1,337,717 
2,070    Fresno Unified School District, Fresno County, California, General Obligation Bonds, Series    8/10 at 102.00    AAA    2,206,434 
     2002G, 5.125%, 8/01/26 – FSA Insured (ETM)             
5,000    Los Angeles Unified School District, California, General Obligation Bonds, Series 2002E,    7/12 at 100.00    AAA    5,428,700 
     5.125%, 1/01/27 (Pre-refunded 7/01/12) – MBIA Insured             
3,000    Peralta Community College District, Alameda County, California, General Obligation Bonds,    8/09 at 102.00    AAA    3,178,170 
     Election of 2000, Series 2001A, 5.000%, 8/01/31 (Pre-refunded 8/01/09) – FGIC Insured             
2,980    Santa Clarita Community College District, Los Angeles County, California, General Obligation    8/11 at 101.00    AAA    3,223,526 
     Bonds, Series 2002, 5.125%, 8/01/26 (Pre-refunded 8/01/11) – FGIC Insured             
9,000    University of California, Revenue Bonds, Multiple Purpose Projects, Series 2000K, 5.300%,    9/08 at 101.00    AA (4)    9,275,040 
     9/01/30 (Pre-refunded 9/01/08)             
2,460    Vacaville Unified School District, Solano County, California, General Obligation Bonds, Series    8/11 at 101.00    AAA    2,647,870 
     2002, 5.000%, 8/01/26 (Pre-refunded 8/01/11) – FSA Insured             
43,270    Total U.S. Guaranteed            46,445,222 
    Utilities – 16.5% (11.0% of Total Investments)             
9,000    Anaheim Public Finance Authority, California, Revenue Bonds, Electric System Distribution    10/12 at 100.00    AAA    9,535,950 
     Facilities, Series 2002A, 5.000%, 10/01/27 – FSA Insured             
10,000    California Pollution Control Financing Authority, Remarketed Revenue Bonds, Pacific Gas and    4/11 at 102.00    AAA    10,783,998 
     Electric Company, Series 1996A, 5.350%, 12/01/16 – MBIA Insured (Alternative Minimum Tax)             
3,000    Los Angeles Department of Water and Power, California, Power System Revenue Bonds, Series    7/11 at 100.00    AAA    3,187,890 
     2001A-1, 5.250%, 7/01/21 – FSA Insured             
830    Merced Irrigation District, California, Electric System Revenue Bonds, Series 2005, 5.125%,    9/15 at 100.00    AAA    894,840 
     9/01/31 – XLCA Insured             
6,000    Northern California Power Agency, Revenue Refunding Bonds, Hydroelectric Project 1, Series    7/08 at 101.00    AAA    6,193,440 
     1998A, 5.200%, 7/01/32 – MBIA Insured             
3,000    Sacramento Municipal Utility District, California, Electric Revenue Bonds, Series 2001N,    8/11 at 100.00    AAA    3,151,050 
     5.000%, 8/15/28 – MBIA Insured             
5,630    Southern California Public Power Authority, Subordinate Revenue Refunding Bonds, Transmission    7/12 at 100.00    AAA    5,888,079 
     Project, Series 2002A, 4.750%, 7/01/19 – FSA Insured             
37,460    Total Utilities            39,635,247 
    Water and Sewer – 17.3% (11.6% of Total Investments)             
3,000    California Department of Water Resources, Water System Revenue Bonds, Central Valley Project,    12/12 at 100.00    AAA    3,224,220 
     Series 2002X, 5.150%, 12/01/23 – FGIC Insured             
6,100    East Bay Municipal Utility District, Alameda and Contra Costa Counties, California, Water    6/11 at 100.00    AAA    6,395,179 
     System Subordinated Revenue Bonds, Series 2001, 5.000%, 6/01/26 – MBIA Insured             
9,000    Eastern Municipal Water District, California, Water and Sewerage System Revenue Certificates    7/11 at 100.00    AAA    9,379,170 
     of Participation, Series 2001B, 5.000%, 7/01/30 – FGIC Insured             
570    Healdsburg Public Financing Authority, California, Wastewater Revenue Bonds, Series 2006,    4/16 at 100.00    AAA    613,326 
     5.000%, 4/01/36 – MBIA Insured             
4,500    Los Angeles County Sanitation Districts Financing Authority, California, Senior Revenue Bonds,    10/13 at 100.00    AAA    4,813,785 
     Capital Projects, Series 2003A, 5.000%, 10/01/23 – FSA Insured             
2,855    Manteca Financing Authority, California, Sewerage Revenue Bonds, Series 2003B, 5.000%,    12/13 at 100.00    Aaa    2,859,996 
     12/01/33 – MBIA Insured             
500    Marina Coast Water District, California, Enterprise Certificate of Participation, Series 2006,    6/16 at 100.00    AAA    538,180 
     5.000%, 6/01/31 – MBIA Insured             
9,185    Orange County Sanitation District, California, Certificates of Participation, Series 2003,    8/13 at 100.00    AAA    9,714,791 
     5.000%, 2/01/33 – FGIC Insured             
870    Sacramento County Sanitation District Financing Authority, California, Revenue Bonds, Series    6/16 at 100.00    AAA    942,149 
     2006, 5.000%, 12/01/36 – FGIC Insured             
    Semitropic Water Storage District, Kern County, California, Water Banking Revenue Bonds,             
    Series 2004A:             
1,315     5.500%, 12/01/20 – XLCA Insured    12/14 at 100.00    AAA    1,473,313 
1,415     5.500%, 12/01/21 – XLCA Insured    12/14 at 100.00    AAA    1,584,319 
39,310    Total Water and Sewer            41,538,428 
$      338,010    Total Investments (cost $334,316,652) – 149.5%            359,397,464 
    Floating Rate Obligations – (2.1%)            (4,985,000) 
    Other Assets Less Liabilities – 1.7%            3,916,448 
    Preferred Shares, at Liquidation Value – (49.1)%            (118,000,000) 
    Net Assets Applicable to Common Shares – 100%           $   240,328,912 

    At least 80% of the Fund’s net assets (including net assets attributable to Preferred shares) are invested 
    in municipal securities that are either covered by Original Issue Insurance, Secondary Market Insurance 
    or Portfolio Insurance which ensures the timely payment of principal and interest. Up to 20% of the 
    Fund’s net assets (including net assets attributable to Preferred shares) may be invested in municipal 
    securities that are (i) either backed by an escrow or trust containing sufficient U.S. Government or U.S. 
    Government agency securities (also ensuring the timely payment of principal and interest), or (ii) rated, 
    at the time of investment, within the four highest grades (Baa or BBB or better by Moody’s, S&P or 
    Fitch) or unrated but judged to be of comparable quality by the Adviser. 
(1)    All percentages shown in the Portfolio of Investments are based on net assets applicable to Common 
    shares unless otherwise noted. 
(2)    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. Certain mortgage-backed securities 
    may be subject to periodic principal paydowns. 
(3)    Ratings: Using the higher of Standard & Poor’s or Moody’s rating. Ratings below BBB by Standard & 
    Poor’s Group or Baa by Moody’s Investor Service, Inc. are considered to be below investment grade. 
(4)    Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency 
    securities which ensure the timely payment of principal and interest. Such investments are normally 
    considered to be equivalent to AAA rated securities. 
N/R    Not rated. 
(ETM)    Escrowed to maturity. 
(UB)    Underlying bond of an inverse floating rate trust reflected as a financing transaction pursuant to the 
    provisions of SFAS No. 140. 

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 the treatment of paydown gains and losses, timing differences in recognizing taxable market discount, timing differences in recognizing certain gains and losses on investment transactions and the treatment of inverse floating rate transactions subject to SFAS No. 140.

At November 30, 2006, the cost of investments was $330,775,774.

Gross unrealized appreciation and gross unrealized depreciation of investments at November 30, 2006, were as follows:

Gross unrealized:     
  Appreciation    $25,283,656 
  Depreciation    (1,645,440) 
Net unrealized appreciation (depreciation) of investments    $23,638,216 

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 Insured California Dividend Advantage Municipal Fund        

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

Date         January 29, 2007        

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                    
                                                   Gifford R. Zimmerman
                                                   Chief Administrative Officer (principal executive officer) 

Date         January 29, 2007        

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

Date        January 29, 2007        

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