-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001140361-08-001299.txt : 20080114
<SEC-HEADER>0001140361-08-001299.hdr.sgml : 20080114
<ACCEPTANCE-DATETIME>20080114162719
ACCESSION NUMBER:		0001140361-08-001299
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080110
FILED AS OF DATE:		20080114
DATE AS OF CHANGE:		20080114

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EAGLE ROCK ENERGY PARTNERS L P
		CENTRAL INDEX KEY:			0001364541
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				680629883
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		16701 GREENSPOINT PARK DRIVE
		STREET 2:		SUITE 200
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77060
		BUSINESS PHONE:		281-408-1200

	MAIL ADDRESS:	
		STREET 1:		16701 GREENSPOINT PARK DRIVE
		STREET 2:		SUITE 200
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77060

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Eagle Rock Energy Partners, L.P.
		DATE OF NAME CHANGE:	20060531

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LEHMAN BROTHERS HOLDINGS INC
		CENTRAL INDEX KEY:			0000806085
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33016
		FILM NUMBER:		08528856

	BUSINESS ADDRESS:	
		STREET 1:		LEHMAN BROTHERS
		STREET 2:		745 SEVENTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		2125267000

	MAIL ADDRESS:	
		STREET 1:		LEHMAN BROTHERS
		STREET 2:		745 SEVENTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER NAME:	
		FORMER CONFORMED NAME:	SHEARSON LEHMAN HUTTON HOLDINGS INC
		DATE OF NAME CHANGE:	19901017
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <issuer>
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        <issuerName>EAGLE ROCK ENERGY PARTNERS L P</issuerName>
        <issuerTradingSymbol>EROC</issuerTradingSymbol>
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    <reportingOwner>
        <reportingOwnerId>
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            <rptOwnerName>LEHMAN BROTHERS HOLDINGS INC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
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            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Units</value>
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            <transactionDate>
                <value>2008-01-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>200</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.12</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7481798</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
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        <nonDerivativeTransaction>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.1375</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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            </transactionAmounts>
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            </postTransactionAmounts>
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        <nonDerivativeTransaction>
            <securityTitle>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.14</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7480998</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
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                <natureOfOwnership>
                    <value>See Footnote</value>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units</value>
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            <transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.1725</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7480898</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F4"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <transactionDate>
                <value>2008-01-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.18</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7480798</value>
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            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <transactionDate>
                <value>2008-01-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.19</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7480698</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F6"/>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <transactionDate>
                <value>2008-01-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>18.2675</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7480398</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F7"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">By direct and indirect, wholly-owned subsidiaries of the Reporting Person: 2,509,746 common units held by Lehman Brothers Inc.; 3,590,859 common units held by Lehman Brothers MLP Opportunity Fund LP; and 1,381,193 common units held by Lehman Brothers MLP Partners, LP</footnote>
        <footnote id="F2">By direct and indirect, wholly-owned subsidiaries of the Reporting Person: 2,509,246 common units held by Lehman Brothers Inc.; 3,590,859 common units held by Lehman Brothers MLP Opportunity Fund LP; and 1,381,193 common units held by Lehman Brothers MLP Partners, LP</footnote>
        <footnote id="F3">By direct and indirect, wholly-owned subsidiaries of the Reporting Person: 2,508,946 common units held by Lehman Brothers Inc.; 3,590,859 common units held by Lehman Brothers MLP Opportunity Fund LP; and 1,381,193 common units held by Lehman Brothers MLP Partners, LP</footnote>
        <footnote id="F4">By direct and indirect, wholly-owned subsidiaries of the Reporting Person: 2,508,846 common units held by Lehman Brothers Inc.; 3,590,859 common units held by Lehman Brothers MLP Opportunity Fund LP; and 1,381,193 common units held by Lehman Brothers MLP Partners, LP</footnote>
        <footnote id="F5">By direct and indirect, wholly-owned subsidiaries of the Reporting Person: 2,508,746 common units held by Lehman Brothers Inc.; 3,590,859 common units held by Lehman Brothers MLP Opportunity Fund LP; and 1,381,193 common units held by Lehman Brothers MLP Partners, LP</footnote>
        <footnote id="F6">By direct and indirect, wholly-owned subsidiaries of the Reporting Person: 2,508,646 common units held by Lehman Brothers Inc.; 3,590,859 common units held by Lehman Brothers MLP Opportunity Fund LP; and 1,381,193 common units held by Lehman Brothers MLP Partners, LP</footnote>
        <footnote id="F7">By direct and indirect, wholly-owned subsidiaries of the Reporting Person: 2,508,346 common units held by Lehman Brothers Inc.; 3,590,859 common units held by Lehman Brothers MLP Opportunity Fund LP; and 1,381,193 common units held by Lehman Brothers MLP Partners, LP</footnote>
    </footnotes>

    <remarks>Because the SEC's electronic filing system does not allow for the disclosure of more than 30 transactions on one Form 4, the Reporting Persons are filing three simultaneous Forms 4 to report their reportable transactions, all of which together shall be deemed a single report filed on this date. This is the third Form 4 of the three filings.


 JOINT FILER INFORMATION: Title of Derivative Securities: Common Units Issuer &amp;  Ticker Symbol: Eagle Rock Energy Partners L P (EROC) Designated Filer: Lehman Brothers Holdings Inc., 745 Seventh Avenue New York, NY 10019 Other Joint Filer Information: Lehman Brothers Inc. 745 Seventh Avenue, New York, NY 10019, a Delaware corporation, a direct wholly-owned subsidiary of the Reporting Person. LB I Group Inc., 399 Park Avenue, New York NY 10022, a Delaware corporation, a direct wholly-owned subsidiary of Lehman Brothers Inc. Lehman Brothers MLP Opportunity Associates LLC, 399 Park Avenue, New York, NY 10022, a Delaware limited liability company, a direct wholly-owned subsidiary of the Reporting Person and general partner of Lehman Brothers MLP Opportunity Associates LP. Lehman Brothers MLP Opportunity Associates LP, 399 Park Avenue, New York, NY 10022, a Delaware limited partnership, and general partner of Lehman Brothers MLP Opportunity Fund LP. Lehman Brothers MLP Opportunity Fund LP, 399 Park Avenue, Ne
w York, NY 10022 a Delaware limited partnership. Lehman Brothers MLP Associates, LP, 399 Park Avenue New York, NY 10022, a Delaware limited partnership, wholly-owned by LB I Group Inc. Lehman Brothers MLP Partners, LP, 399 Park Avenue, New York, NY 10022 a Delaware limited partnership, wholly-owned by Lehman Brothers MLP Associates, LP.</remarks>

    <ownerSignature>
        <signatureName>/s/ Barrett S. DiPaolo</signatureName>
        <signatureDate>2008-01-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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