| OMB APPROVAL                                                                                                                   |
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| SEC FILE NUMBER000-52787                                                                                                       |
| CUSIP NUMBER                                                                                                              |

| (Check one): |   | x Form 10-K    Form 20-F    Form 11-K    Form 10-Q    Form 10-D    Form N-SAR    Form N-CSR |
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|   |   | For Period Ended: December 31, 2013                                                                                  |
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|   |   |                                                                                                                                                                                                                                                                    |   | Transition Report on Form 10-K |
|   |   |                                                                                                                                                                                                                                                                    |   | Transition Report on Form 20-F |
|   |   |                                                                                                                                                                                                                                                                    |   | Transition Report on Form 11-K |
|   |   |                                                                                                                                                                                                                                                                    |   | Transition Report on Form 10-Q |
|   |   |                                                                                                                                                                                                                                                                    |   | Transition Report on Form N-SAR |
|   |   | For the Transition Period Ended:                                        |

| Read Instruction (on back page) Before Preparing Form. Please Print or TypeNothing in this form shall be construed to imply that the Commission has verified any information contained herein. |
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| PART I — REGISTRANT INFORMATION                     |
|  Rockies Region 2006 Limited Partnership             |
| Full Name of Registrant                                   |
|                                                      |
| Former Name if Applicable                                 |
|                                                      |
| 1775 Sherman Street, Suite 3000                           |
| Address of Principal Executive Office (Street and Number) |
|                                                      |
| Denver, CO  80203                               |
| City, State and Zip Code                                  |
|                                                      |

|   |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |   |     |
|--------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|----------|
| (a)    |   | The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense                                                                                                                                                                                                                                                                                                                                                                            |   |     |
| (b)    |   | The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q, or subject distribution report on Form 10-D, or  portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and |   |   x |
| (c)    |   | The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.                                                                                                                                                                                                                                                                                                                                                                                           |   |     |

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|            |                                                                          |
|-----------------|-------------------------------------------------------------------------------|
| (1)   | Name and telephone number of person to contact in regard to this notification |

| R. Scott Meyers          |        |               |
|--------------------------|-------------|--------------------|
| Chief Accounting Officer |        |               |
| PDC Energy, Inc.,        |        |               |
| Managing General Partner | 304         | 842-3597           |
| (Name)                   | (Area Code) | (Telephone Number) |

| (2)   | Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed?  If answer is no, identify report(s).          Yes x    No   |
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|            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |

| (3)   | Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?           Yes x   No   If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made. In June 2013, the Partnership completed the divestiture of all of its Piceance Basin assets for cash consideration of approximately $7.9 million.  In July 2013, the net proceeds from the assets divestiture were distributed pro rata to the Partnership’s partners. During the 4th quarter of 2013, the Partnership recorded an impairment of crude oil and natural gas properties of approximately $9.8 million.     |
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|  Rockies Region 2006 Limited Partnership |
|-----------------------------------------------|
| ____________________________________          |
| (Name of Registrant as specified in charter)  |
|                                          |

|        |   |                |   |                                                                                             |
|-------------|--------|---------------------|--------|--------------------------------------------------------------------------------------------------|
| Date:  |   | April 1, 2014  |   | By                                                                                          |   | PDC Energy, Inc. |
|        |   |                |   |  /s/ Gysle R. Shellum                                                                       |
|        |   |                |   | Gysle R. Shellum,Chief Financial Officer of PDC Energy, Inc., Managing General Partner |