UNITEDSTATES
SECURITIESANDEXCHANGECOMMISSION
Washington,D.C.20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED
MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-06499

Name of Fund: BlackRock MuniYield California Fund, Inc. (MYC)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Anne F. Ackerley, Chief Executive Officer, BlackRock
MuniYield California Fund, Inc., 55 East 52 nd Street, New York, NY 10055.

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 07/31/2010

Date of reporting period: 04/30/2010

Item 1 – Schedule of Investments


Schedule of Investments April 30, 2010 (Unaudited)

BlackRock MuniYield California Fund, Inc. (MYC)
(Percentages shown are based on Net Assets)

      Par    
Municipal Bonds     (000)   Value  
California — 108.8%        
Corporate — 4.2%        
California Pollution Control Financing        
    Authority, RB, Waste Management Inc.      
    Project, Series C, AMT, 6.75%,        
    12/01/27   $ 3,300   $ 3,381,213  
City of Chula Vista California, Refunding      
    RB, San Diego Gas & Electric,        
    Series A, 5.88%, 2/15/34     975   1,074,801  
University of California, RB, Limited        
    Project, Series B (AGM), 5.00%,        
    5/15/33     8,485   8,611,851  
      13,067,865  
County/City/Special District/School District — 38.4%    
Arcata Joint Powers Financing Authority,      
    California, Tax Allocation Bonds,        
    Refunding, Community Development      
    Project Loan, Series A (AMBAC),        
    6.00%, 8/01/23     2,520   2,521,184  
California State Department of Water        
    Resources, Refunding RB, Water        
    System, Series AF, 5.00%, 12/01/29   2,500   2,687,600  
City of Los Angeles California, COP,        
    Senior, Sonnenblick Del Rio West Los      
    Angeles (AMBAC), 6.20%, 11/01/31   2,000   2,032,480  
City of Los Angeles California, Refunding      
    RB, Series A, 5.00%, 6/01/39     9,870   10,226,899  
El Monte Union High School District,        
    California, GO, Election of 2002,        
    Series C (AGM), 5.25%, 6/01/32     10,120   10,449,204  
Fontana Unified School District,        
    California, GO, Series A (AGM), 5.25%,      
    8/01/28     7,000   7,414,680  
Los Angeles Municipal Improvement        
    Corp., RB, Real Property, Series E:        
        5.75%, 9/01/34     500   531,500  
        6.00%, 9/01/34     1,860   2,029,148  
Marin Community College District, GO,      
    Election of 2004, Series A (NPFGC),      
    5.00%, 8/01/28     5,885   6,068,082  
Modesto Irrigation District, COP,        
    Series B, 5.50%, 7/01/35     3,300   3,484,041  
Morgan Hill Unified School District,        
    California, GO, CAB (FGIC), 5.07%,        
    8/01/26 (a)(b)     7,570   3,785,379  
Murrieta Valley Unified School District,      
    Public Financing Authority, Special Tax      
    Bonds, Refunding, Series A (AGC),        
    5.13%, 9/01/26     6,675   7,022,567  

      Par    
Municipal Bonds     (000)   Value  
California (continued)        
County/City/Special District/School District (continued)    
Oak Grove School District, California,        
    GO, Election of 2008, Series A,        
    5.50%, 8/01/33   $ 4,000   $  4,274,720  
Orange County Sanitation District, COP      
    (NPFGC), 5.00%, 2/01/33     5,250   5,337,780  
Pico Rivera Public Financing Authority,      
    RB:        
        5.50%, 9/01/31     1,500   1,536,180  
        5.75%, 9/01/39     4,365   4,507,823  
Pittsburg Redevelopment Agency, Tax        
    Allocation Bonds, Refunding,        
    Subordinate, Los Medanos        
    Community Project, Series A, 6.50%,      
    9/01/28     2,500   2,761,850  
San Diego Regional Building Authority,      
    California, RB, County Operations        
    Center & Annex, Series A:        
        5.38%, 2/01/28     150   160,857  
        5.38%, 2/01/36     3,200   3,381,536  
San Francisco Bay Area Transit        
    Financing Authority, Refunding RB,        
    Series A (NPFGC), 5.00%, 7/01/34     5,435   5,531,145  
San Jose Evergreen Community College      
    District, California, GO, Refunding,        
    CAB, Election of 2004, Series A        
    (NPFGC), 5.12%, 9/01/23 (a)     10,005   5,118,558  
San Juan Unified School District,        
    California, GO, Election of 2002        
    (NPFGC), 5.00%, 8/01/28     5,000   5,088,150  
Santa Ana Unified School District, GO,      
    Election of 2008, Series A, 5.13%,        
    8/01/33     5,000   5,167,800  
Santa Cruz County Redevelopment        
    Agency, California, Tax Allocation        
    Bonds, Live Oak/Soquel Community      
    Improvement, Series A:        
        6.63%, 9/01/29     1,000   1,085,760  
        7.00%, 9/01/36     500   554,530  
Twin Rivers Unified School District, GO,      
    Election of 2006 (AGM), 5.00%,        
    8/01/29     9,390   9,580,148  
Vacaville Unified School District,        
    California, GO, Election of 2001        
    (NPFGC), 5.00%, 8/01/30     4,745   4,770,765  
Ventura Unified School District,        
    California, GO, Election of 1997,        
    Series H (AGM), 5.13%, 8/01/34     1,000   1,017,680  

Portfolio Abbreviations

To simplify the listings of portfolio holdings in the Schedule of Investments, the names and descriptions of many of the securities have been abbreviated
according to the following list:

AGC   Assured Guaranty Corp.   FGIC   Financial Guaranty Insurance Co.  
AGM   Assured Guaranty Municipal Corp.   GNMA   Government National Mortgage Association  
AMBAC   American Municipal Bond Assurance Corp.   GO   General Obligation Bonds  
AMT   Alternative Minimum Tax (subject to)   LRB   Lease Revenue Bonds  
CAB   Capital Appreciation Bonds   NPFGC   National Public Finance Guarantee Corp.  
COP   Certificates of Participation   RB   Revenue Bonds  

BLACKROCK MUNIYIELD CALIFORNIA FUND, INC.

APRIL 30, 2010

1


Schedule of Investments (continued)

BlackRock MuniYield California Fund, Inc. (MYC)
(Percentages shown are based on Net Assets)

      Par    
Municipal Bonds     (000)   Value  
California (continued)        
County/City/Special District/School District (concluded)    
Westminster Redevelopment Agency,        
    California, Tax Allocation Bonds,        
    Subordinate, Commercial        
    Redevelopment Project No. 1 (AGC),      
    6.25%, 11/01/39   $ 1,250   $  1,424,588  
      119,552,634  
Education — 7.7%        
California Educational Facilities        
    Authority, RB, Pitzer College, 6.00%,      
    4/01/40     2,500   2,667,325  
California State Enterprise Development      
    Authority, Refunding RB, The Thacher      
    School Project, 5.13%, 9/01/39     6,965   7,054,779  
California State University, RB,        
    Systemwide, Series A, 5.50%,        
    11/01/39     2,725   2,873,294  
University of California, RB:        
        Limited Project, Series D (NPFGC),      
        5.00%, 5/15/32     2,500   2,559,525  
        Series L, 5.00%, 5/15/36     8,500   8,785,005  
      23,939,928  
Health — 15.2%        
ABAG Finance Authority for Nonprofit        
    Corps, Refunding RB, Sharp        
    Healthcare, 6.38%, 8/01/34     1,750   1,843,730  
California Health Facilities Financing        
    Authority, Refunding RB:        
        Catholic Healthcare West, Series A,      
        6.00%, 7/01/39     10,000   10,719,900  
        Catholic Healthcare West, Series E,      
        5.63%, 7/01/25     6,000   6,399,960  
        Scripps Health, Series A, 5.00%,        
        11/15/36     9,605   9,521,148  
        St. Joseph Health System, Series A,      
        5.50%, 7/01/29     2,100   2,181,018  
California Statewide Communities        
    Development Authority, RB, Health        
    Facility, Memorial Health Services,        
    Series A:        
        6.00%, 10/01/23     3,270   3,411,755  
        5.50%, 10/01/33     3,015   3,060,255  
California Statewide Communities        
    Development Authority, Refunding RB:      
        Catholic Healthcare West, Series D,      
        5.50%, 7/01/31     5,055   5,193,103  
        Senior Living, Southern California,      
        6.25%, 11/15/19     500   539,515  
        Senior Living, Southern California,      
        6.63%, 11/15/24     650   690,807  
        Senior Living, Southern California,      
        7.00%, 11/15/29     500   537,035  
        Senior Living, Southern California,      
        7.25%, 11/15/41     1,750   1,897,840  

      Par    
Municipal Bonds     (000)   Value  
California (continued)        
Health (concluded)        
City of Torrance California, Refunding        
    RB, Torrance Memorial Medical        
    Center, Series A, 6.00%, 6/01/22   $ 1,310   $ 1,350,492  
      47,346,558  
Housing — 1.2%        
California Rural Home Mortgage Finance      
    Authority, RB, AMT:        
        Mortgage-Backed Securities        
        Program, Series B (GNMA), 6.15%,      
        6/01/20     25   25,258  
        Sub-Series FH-1, 5.50%, 8/01/47   415   232,392  
Santa Clara County Housing Authority,      
    California, RB, John Burns Gardens        
    Apartments Project, Series A, AMT,        
    6.00%, 8/01/41     3,500   3,516,310  
      3,773,960  
State — 8.2%        
California State Public Works Board, RB:      
        Department of Developmental        
        Services, Porterville, Series C,        
        6.25%, 4/01/34     1,100   1,164,636  
        Department of Education, Riverside      
        Campus Project, Series B, 6.50%,      
        4/01/34     10,000   10,770,000  
        Trustees of the California State        
        University, Series D, 6.00%,        
        4/01/27     215   223,561  
        Various Capital Projects,        
        Sub-Series I-1, 6.38%, 11/01/34     1,850   1,981,998  
State of California, GO, Various Purpose:      
        6.00%, 3/01/33     5,000   5,503,550  
        6.50%, 4/01/33     5,000   5,668,850  
      25,312,595  
Transportation — 6.3%        
County of Orange California, RB,        
    Series B, 5.75%, 7/01/34     3,000   3,258,990  
County of Sacramento, California, RB,        
    Senior, Series B, 5.75%, 7/01/39     900   967,851  
Los Angeles Department of Airports,        
    Refunding RB, Senior, Los Angeles        
    International Airport, Series A, 5.00%,      
    5/15/40     4,880   4,972,525  
San Francisco City & County Airports        
    Commission, RB, Series E, 6.00%,        
    5/01/39     4,835   5,303,221  
San Francisco Port Commission,        
    California, RB, Series A, 5.13%,        
    3/01/40     5,000   5,005,400  
      19,507,987  

2 BLACKROCK MUNIYIELD CALIFORNIA FUND, INC.

APRIL 30, 2010


Schedule of Investments (continued)

BlackRock MuniYield California Fund, Inc. (MYC)
(Percentages shown are based on Net Assets)

  Par    
Municipal Bonds   (000)               Value  
California (concluded)      
Utilities — 27.6%      
California Infrastructure & Economic      
    Development Bank, RB, California      
    Independent System Operator,      
    Series A, 6.25%, 2/01/39   $ 2,170   $ 2,293,603  
California Statewide Communities      
    Development Authority, RB, Pooled      
    Financing Program, Series C, City of      
    West Sacramento (AGM), 5.25%,      
    10/01/28   2,380   2,422,316  
City of Chula Vista, California, Refunding      
    RB, San Diego Gas & Electric,      
    Series D, 5.88%, 1/01/34   2,500   2,755,900  
Eastern Municipal Water District,      
    California, COP, Series H, 5.00%,      
    7/01/35   7,775   7,994,955  
Los Angeles Department of Water &      
    Power, RB:      
        Power System, Sub-Series A-1      
        (AMBAC), 5.00%, 7/01/37   15,100   15,510,720  
        System, Sub-Series A-2 (AGM),      
        5.00%, 7/01/35   7,250   7,439,007  
Metropolitan Water District of Southern      
    California, RB:      
        Series A, 5.00%, 7/01/32   1,390   1,455,525  
        Series A (AGM), 5.00%, 7/01/30   1,000   1,036,770  
        Series C, 5.00%, 7/01/35   7,145   7,417,010  
Metropolitan Water District of Southern      
    California, Refunding RB:      
        Series B, 5.00%, 7/01/35   2,675   2,776,837  
        Series C, 5.00%, 7/01/31   1,750   1,869,280  
Oxnard Financing Authority, RB,      
    Redwood Trunk Sewer & Headworks,      
    Series A (NPFGC), 5.25%, 6/01/34   4,160   4,190,160  
Sacramento Municipal Utility District,      
    RB, Cosumnes Project (NPFGC),      
    5.13%, 7/01/29   18,500   18,620,250  
Sacramento Regional County Sanitation      
    District, Refunding RB, County      
    Sanitation District 1 (NPFGC), 5.00%,      
    8/01/35   5,675   5,776,810  
San Diego Public Facilities Financing      
    Authority, Refunding RB, Senior      
    Series A, 5.38%, 5/15/34   1,910   2,041,771  
San Francisco City & County Public      
    Utilities Commission, Refunding RB,      
    Series A, 5.13%, 11/01/39   2,295   2,403,117  
    86,004,031  
Total Municipal Bonds in California     338,505,558  

      Par    
Municipal Bonds     (000)   Value  
Puerto Rico — 3.2%        
County/City/Special District/School District — 1.8%    
Puerto Rico Sales Tax Financing Corp.,      
    RB, First Sub-Series A, 6.50%,        
    8/01/44   $ 5,000   $  5,648,550  
State — 1.4%        
Commonwealth of Puerto Rico, GO,        
    Refunding, Public improvement,        
    Series B, 6.50%, 7/01/37     4,000   4,405,720  
Total Municipal Bonds in Puerto Rico       10,054,270  
 Total Municipal Bonds – 112.0%                                       348,559,828
Municipal Bonds Transferred to Tender      
Option Bond Trusts (c)        
California — 41.3%        
Corporate — 5.8%        
San Francisco Bay Area Rapid Transit        
    District, Refunding RB, Series A        
    (NPFGC), 5.00%, 7/01/30     6,000   6,167,280  
University of California, RB, Series L,        
    5.00%, 5/15/40     11,597   11,894,135  
      18,061,415  
County/City/Special District/School District — 14.3%    
Contra Costa Community College        
    District, California, GO, Election of        
    2002 (AGM), 5.00%, 8/01/30     10,215   10,421,750  
Fremont Unified School District,        
    Alameda County, California, GO,        
    Election of 2002, Series B (AGM),        
    5.00%, 8/01/30     4,003   4,101,120  
Los Angeles Community College District,      
    California, GO, Election of 2008,        
    Series A, 6.00%, 8/01/33     3,828   4,292,727  
San Diego Community College District      
    California, GO, Election of 2002,        
    5.25%, 8/01/33     7,732   8,119,958  
Santa Clara County Financing Authority,      
    Refunding LRB, Series L, 5.25%,        
    5/15/36     10,001   10,461,382  
Sonoma County Junior College District,      
    GO, Refunding, Election of 2002,        
    Series B (AGM), 5.00%, 8/01/28     6,875   7,098,479  
      44,495,416  
Education — 11.3%        
California Educational Facilities        
    Authority, RB, University of Southern      
    California, Series A, 5.25%, 10/01/18   13,845   14,846,270  
California State University, RB,        
    Systemwide, Series A (AGM), 5.00%,      
    11/01/39     4,840   4,894,063  

BLACKROCK MUNIYIELD CALIFORNIA FUND, INC.

APRIL 30, 2010

3


Schedule of Investments (concluded)

BlackRock MuniYield California Fund, Inc. (MYC)
(Percentages shown are based on Net Assets)

Municipal Bonds Transferred to Tender   Par    
Option Bond Trusts (c)   (000)   Value  
California (concluded)      
Education (concluded)      
Los Angeles Community College District,      
    California, GO, Election of 2003,      
    Series E (AGM), 5.00%, 8/01/31   $ 10,002   $  10,237,933  
Peralta Community College District, GO,      
    Election of 2000, Series D (AGM),      
    5.00%, 8/01/30   1,995   2,043,878  
University of California, RB, Series O,      
    5.75%, 5/15/34   2,805   3,149,426  
    35,171,570  
Utilities — 9.9%      
Eastern Municipal Water District, COP,      
    Series H, 5.00%, 7/01/33   4,748   4,882,312  
Metropolitan Water District of Southern      
    California, RB, Series A, 5.00%,      
    7/01/37   20,000   20,892,400  
San Diego County Water Authority, COP,      
    Series A (AGM), 5.00%, 5/01/31   5,010   5,123,326  
    30,898,038  
Total Municipal Bonds Transferred to      
Tender Option Bond Trusts – 41.3%     128,626,439  
Total Long-Term Investments      
 (Cost – $465,274,902) – 153.3%                                        477,186,267
Short-Term Securities   Shares    
CMA California Municipal Money Fund,      
    0.04% (d)(e)   5,045,201   5,045,201  
Total Short-Term Securities      
(Cost – $5,045,201) – 1.6%     5,045,201  
Total Investments      
(Cost – $470,320,103*) – 154.9%     482,231,468  
Other Assets Less Liabilities –1.7%     5,225,806  
Liability for Trust Certificates, Including Interest    
    Expense and Fees Payable – (22.5)%     (70,188,507)  
Preferred Shares, at Redemption Value – (34.1)%   (105,968,869)  
Net Assets Applicable to Common Shares – 100.0%    $  311,299,898  

* The cost and unrealized appreciation (depreciation) of investments as of
April 30, 2010, as computed for federal income tax purposes, were as

follows:    
Aggregate cost   $ 400,564,093  
Gross unrealized appreciation   $ 13,759,589  
Gross unrealized depreciation                       (2,228,222)  
Net unrealized appreciation   $ 11,531,367  

(a) Represents a zero-coupon bond. Rate shown reflects the current yield as
of report date.
(b) Security is collateralized by Municipal or US Treasury obligations.
(c) Securities represent bonds transferred to a tender option bond trust in
exchange for which the Fund acquired residual interest certificates.
These securities serve as collateral in a financing transaction.
(d) Investments in companies considered to be an affiliate of the Fund
during the period, for purposes of Section 2(a)(3) of the Investment

Company Act of 1940, were as f ollows:

  Shares Held     Shares Held    
  at July 31,   Net   at April 30,    
Affiliate   2009   Activity   2010   Income  
CMA California          
    Municipal          
    Money Fund   7,607,697   (2,562,496)   5,045,201   $1,733  

(e) Represents the current yield as of report date.

• Fair Value Measurements - Various inputs are used in determining the fair

value of investments, which are as follows:

• Level 1 — price quotations in active markets/exchanges for identical
assets and liabilities

• Level 2 — other observable inputs (including, but not limited to: quoted
prices for similar assets or liabilities in markets that are active, quoted
prices for identical or similar assets or liabilities in markets that are not
active, inputs other than quoted prices that are observable for the
assets or liabilities (such as interest rates, yield curves, volatilities,
prepayment speeds, loss severities, credit risks and default rates) or
other market-corroborated inputs)

• Level 3 — unobservable inputs based on the best information available
in the circumstances, to the extent observable inputs are not available
(including the Fund's own assumptions used in determining the fair
value of investments)

The inputs or methodologies used for valuing securities are not necessarily
an indication of the risk associated with investing in those securities. For
information about the Fund's policy regarding valuation of investments and
other significant accounting policies, please refer to the Fund’s most recent
financial statements as contained in its semi-annual report.

The following table summarizes the inputs used as of April 30, 2010 in
determining the fair valuation of the Fund's investments:

Investments in Securities

Valuation Inputs         Level 1   Level 2   Level 3   Total  
Assets:          
Long-Term          
Investments 1   —           $477,186,267             —    $  477,186,267  
Short-Term          
Securities   $ 5,045,201                   5,045,201  
Total   $ 5,045,201       $477,186,267               $  482,231,468  

1 See above Schedule of Investments for values in each sector.

4 BLACKROCK MUNIYIELD CALIFORNIA FUND, INC.

APRIL 30, 2010


Item 2 – Controls and Procedures

2(a) – 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”)) are effective as of a date within 90 days of the filing of this report based on the
evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act
and Rule 13(a)-15(b) under the Securities Exchange Act of 1934, as amended.

2(b) – There were no changes in the registrant's internal control over financial reporting (as defined
in Rule 30a-3(d) under the 1940 Act) 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

Certifications – Attached hereto

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.

BlackRock MuniYield California Fund, Inc.

By: /s/ Anne F. Ackerley
Anne F. Ackerley
Chief Executive Officer of
BlackRock MuniYield California Fund, Inc.

Date: June 28, 2010

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: /s/ Anne F. Ackerley
Anne F. Ackerley
Chief Executive Officer (principal executive officer) of
BlackRock MuniYield California Fund, Inc.

Date: June 28, 2010

By: /s/ Neal J. Andrews
Neal J. Andrews
Chief Financial Officer (principal financial officer) of
BlackRock MuniYield California Fund, Inc.

Date: June 28, 2010


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