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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Washington, D.C.&#160;&#160;20549</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date of Report (Date of earliest event reported): <font style="DISPLAY: inline; FONT-WEIGHT: bold">December 9, 2010 (December 3, 2010)</font></font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">1415 Louisiana Street, Suite 2700</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline;" face="Wingdings">o</font>&#160;&#160;&#160;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item 1.01&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;Entry into a Material Definitive Agreement</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On December 3, 2010, Eagle Rock Field Services, L.P. (&#8220;ERFS&#8221;), a wholly-owned subsidiary of Eagle Rock Energy Partners, L.P. (together with ERFS referred to herein as &#8220;Eagle Rock&#8221;), entered into an amendment (the &#8220;Amendment&#8221;) to that certain Natural Gas Liquids Exchange Agreement (the &#8220;Base Agreement&#8221;) with ONEOK Hydrocarbon, L.P. (&#8220;ONEOK&#8221;) dated December 1, 2005, as amended.&#160;&#160;Pursuant to the Base Agreement, Eagle Rock delivers all of its natural gas liquids extracted at certain of its natural gas processing plants in the Texas Panhandle to ONEOK for transportation and fractionation services.&#160;&#160;Pursuant to the Amendment, the parties agreed to, among other things, (i) extend the contract term of the Base Agreement, (ii) increase Eagle Rock&#8217;s volume dedication with ONEOK, and (iii) increase the exchange differentials for the cost of transporting the natural gas.&#160;&#160;Eagle Rock is also required under the terms of the Amendment to deliver the additional barrels of natural gas on a take-or-pay basis.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The foregoing descriptions of the terms of the Base Agreement and the Amendment are not complete and are qualified in their entirety by reference to the Base Agreement, as amended,&#160;attached as Exhibit 10.5 to Amendment No. 7&#160;&#160;to the registrant&#8217;s Registration Statement on Form S-1 that was filed with the Securities and Exchange Commission on October 13, 2006, and the Amendment, a redacted copy of which is attached hereto as Exhibit 10.1.&#160;&#160;The registrant has requested confidential treatment for portions of the Amendment.&#160;&#160;The Base Agreement and the Amendment as filed with the Securities and Exchange Commission are incorporated by reference herein.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: times new roman">Amendment to Natural Gas Liquids Exchange Agreement by and between ONEOK Hydrocarbon, L.P. and Eagle Rock Field Services, L.P. (successor to ONEOK Texas Field Services, L.P.) dated December 3, 2010</font></div>
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">________________</font></div>

<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">* Confidential treatment has been requested with respect to portions of this exhibit pursuant to Rule 24b-2 of the Securities Exchange Act of 1934, as amended, and these confidential portions have been redacted from the filing made herewith. A complete copy of this exhibit, including the redacted terms, has been separately filed with the Securities and Exchange Commission.</font></div>

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form8k.htm
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.  20549
______________________________
FORM 8-K
_________________________
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):
December 9, 2010 (December 3, 2010)
EAGLE ROCK ENERGY PARTNERS, L.P.
(Exact name of Registrant as specified in its charter)
Delaware
001-33016
68-0629883
(State or other jurisdiction of incorporation or organization)
Commission File Number
(I.R.S. Employer Identification No.)
1415 Louisiana Street, Suite 2700
Houston, Texas  77002
(Address of principal executive offices, including zip code)
(281) 408-1200
(Registrant's telephone number, including area code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 1.01                      Entry into a Material Definitive Agreement
On December 3, 2010, Eagle Rock Field Services, L.P. ("ERFS"), a wholly-owned subsidiary of Eagle Rock Energy Partners, L.P. (together with ERFS referred to herein as "Eagle Rock"), entered into an amendment (the "Amendment") to that certain Natural Gas Liquids Exchange Agreement (the "Base Agreement") with ONEOK Hydrocarbon, L.P. ("ONEOK") dated December 1, 2005, as amended.  Pursuant to the Base Agreement, Eagle Rock delivers all of its natural gas liquids extracted at certain of its natural gas processing plants in the Texas Panhandle to ONEOK for transportation and fractionation services.  Pursuant to the Amendment, the parties agreed to, among other things, (i) extend the contract term of the Base Agreement, (ii) increase Eagle Rock's volume dedication with ONEOK, and (iii) increase the exchange differentials for the cost of transporting the natural gas.  Eagle Rock is also required under the terms of the Amendment to deliver the additional barrels of natural gas on a take-or-pay basis.
The foregoing descriptions of the terms of the Base Agreement and the Amendment are not complete and are qualified in their entirety by reference to the Base Agreement, as amended, attached as Exhibit 10.5 to Amendment No. 7  to the registrant's Registration Statement on Form S-1 that was filed with the Securities and Exchange Commission on October 13, 2006, and the Amendment, a redacted copy of which is attached hereto as Exhibit 10.1.  The registrant has requested confidential treatment for portions of the Amendment.  The Base Agreement and the Amendment as filed with the Securities and Exchange Commission are incorporated by reference herein.
Item 9.01.                       Financial Statements and Exhibits
(d)  Exhibits
Exhibit No.
Description
10.1*
Amendment to Natural Gas Liquids Exchange Agreement by and between ONEOK Hydrocarbon, L.P. and Eagle Rock Field Services, L.P. (successor to ONEOK Texas Field Services, L.P.) dated December 3, 2010
________________
* Confidential treatment has been requested with respect to portions of this exhibit pursuant to Rule 24b-2 of the Securities Exchange Act of 1934, as amended, and these confidential portions have been redacted from the filing made herewith. A complete copy of this exhibit, including the redacted terms, has been separately filed with the Securities and Exchange Commission.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
EAGLE ROCK ENERGY PARTNERS, L.P.
By:
Eagle Rock Energy GP, L.P.,
its general partner
By:
Eagle Rock Energy G&P, LLC,
its general partner
Date: December 9, 2010
By:
/s/ Charles C. Boettcher
Charles C. Boettcher
Senior Vice President and General Counsel
Exhibit Index
Exhibit No.
Description
10.1*
Amendment to Natural Gas Liquids Exchange Agreement by and between ONEOK Hydrocarbon, L.P. and Eagle Rock Field Services, L.P. (successor to ONEOK Texas Field Services, L.P.) dated December 3, 2010
________________
* Confidential treatment has been requested with respect to portions of this exhibit pursuant to Rule 24b-2 of the Securities Exchange Act of 1934, as amended, and these confidential portions have been redacted from the filing made herewith. A complete copy of this exhibit, including the redacted terms, has been separately filed with the Securities and Exchange Commission.