<SUBMISSION>
<ACCESSION-NUMBER>0001285626-04-000001
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20041202
<FILING-DATE>20041207
<DATE-OF-FILING-DATE-CHANGE>20041207
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>CADIZ INC
<CIK>0000727273
<ASSIGNED-SIC>0700
<IRS-NUMBER>770313235
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>777 SOUTH FIGUEROA STREET
<STREET2>SUITE 4250
<CITY>LOS ANGELES
<STATE>CA
<ZIP>90017
<PHONE>213-271-1600
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>777 SOUTH FIGUEROA STREET
<STREET2>SUITE 4250
<CITY>LOS ANGELES
<STATE>CA
<ZIP>90017
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>CADIZ LAND CO INC
<DATE-CHANGED>19920703
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>PACIFIC AGRICULTURAL HOLDINGS INC
<DATE-CHANGED>19920602
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>ARIDTECH INC
<DATE-CHANGED>19880523
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>RITCHIE GREGORY
<CIK>0001285626
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>000-12114
<FILM-NUMBER>041187428
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>C/O ING BARIG
<STREET2>60 LONDON WALL
<CITY>LODON ENGALND
<STATE>X0
<ZIP>EC2MT1
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-12-02</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000727273</issuerCik>
        <issuerName>CADIZ INC</issuerName>
        <issuerTradingSymbol>CDZI.OTCBB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001285626</rptOwnerCik>
            <rptOwnerName>RITCHIE GREGORY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ING BARINGS</rptOwnerStreet1>
            <rptOwnerStreet2>60 LONDON WALL</rptOwnerStreet2>
            <rptOwnerCity>LONDON, ENGLAND</rptOwnerCity>
            <rptOwnerState>X0</rptOwnerState>
            <rptOwnerZipCode>EC2M 5TQ</rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED KINGDOM</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2004-12-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>0</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reporting Person disclaims all beneficial ownership of all shares of common stock beneficially owned by ING Capital LLC and ING Groep N.V.</footnote>
        <footnote id="F2">ING Groep N.V. and ING Capital LLC have filed a separate Form 4 in connection with their change in beneficial ownership of Cadiz Inc. common stock.  ING Groep N.V. and ING Capital LLC have also filed a Schedule 13D, and will be filing an amendment thereto, in connection with their change in beneficial ownership of Cadiz Inc. common stock.</footnote>
    </footnotes>

    <remarks>Holders of a majority-in-interest of Cadiz Inc.'s Series F Preferred Stock (the &quot;Series F Majority Holders&quot;) have the right to nominate and have seated two directors (the &quot;Series F Directors&quot;) to the Board of Directors of Cadiz Inc. (the &quot;Cadiz Board&quot;) and to nominate and have seated any successor to the Cadiz Board upon the resignation of any Series F Director.  Pursuant to this right, the Series F Majority Holders caused Phillip R. Burnaman II to be appointed to the Cadiz Board on January 30, 2004.  Mr. Burnaman resigned from the Cadiz Board on March 22, 2004.  Reporting Person was nominated as a Series F Director by the Series F Majority Holders upon Mr. Burnaman's resignation and was appointed to the Cadiz Board on March 23, 2004.</remarks>

    <ownerSignature>
        <signatureName>Gregory Ritchie</signatureName>
        <signatureDate>2004-12-06</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
