-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 mpCtt9iJkpZmU3jr8TGIsg==

<SEC-DOCUMENT>0001127602-10-018968.txt : 20100708
<SEC-HEADER>0001127602-10-018968.hdr.sgml : 20100708
<ACCEPTANCE-DATETIME>20100708170742
ACCESSION NUMBER:		0001127602-10-018968
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100706
FILED AS OF DATE:		20100708
DATE AS OF CHANGE:		20100708

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Conrad Stephen Volney
		CENTRAL INDEX KEY:			0001495752

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-06814
		FILM NUMBER:		10944709

	MAIL ADDRESS:	
		STREET 1:		199 FLOWERBURST DRIVE
		CITY:			LITTLETON
		STATE:			CO
		ZIP:			80126

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			US ENERGY CORP
		CENTRAL INDEX KEY:			0000101594
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL MINING [1000]
		IRS NUMBER:				830205516
		STATE OF INCORPORATION:			WY
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		877 NORTH 8TH WEST
		STREET 2:		GLEN L LARSEN BLDG
		CITY:			RIVERTON
		STATE:			WY
		ZIP:			82501
		BUSINESS PHONE:		3078569271

	MAIL ADDRESS:	
		STREET 1:		877 NORTH 8TH WEST
		CITY:			RIVERTON
		STATE:			WY
		ZIP:			82501

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WESTERN STATES MINING INC
		DATE OF NAME CHANGE:	19851229
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-07-06</periodOfReport>

    <issuer>
        <issuerCik>0000101594</issuerCik>
        <issuerName>US ENERGY CORP</issuerName>
        <issuerTradingSymbol>USEG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001495752</rptOwnerCik>
            <rptOwnerName>Conrad Stephen Volney</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>877 N 8TH ST. W.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>RIVERTON</rptOwnerCity>
            <rptOwnerState>WY</rptOwnerState>
            <rptOwnerZipCode>82501</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-07-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.53</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-07-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.51</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>20000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Director/ Option(rtb)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.04</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2011-06-25</value>
            </exerciseDate>
            <expirationDate>
                <value>2020-06-24</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>U.S. Energy Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>10000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the weighted average price of 10,000 shares of common stock of the Issuer purchased by the Reporting Person in multiple transactions on July 7, 2010 with the purchase price ranging from $4.50 to $4.52 per share. The Reporting Person undertakes to provide upon request by the Staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price.</footnote>
        <footnote id="F2">Includes shares held directly by the Reporting Person.</footnote>
        <footnote id="F3">Stock options granted under the Issuer's 2008 SOP for the Independent Directors and Advisory Board Members granted on June 25, 2010 which vest in three (3) equal annual installments beginning June 25, 2011.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Robert Scott Lorimer, attorney-in-fact</signatureName>
        <signatureDate>2010-07-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
