Natural Gas
Colorado is the seventh largest gas producer, has the third largest gas reserves, and has the largest reserves of coalbed methane in the nation. The state has parts, or all, of five of the top 25 natural gas fields in the United States. About 40% of our natural gas is produced from coal seams — coalbed methane. Fifty-nine percent of Colorado’s production is exported to other states. Virtually all of the natural gas wells drilled in Colorado require hydraulic-fracture stimulation in order to produce commercial volumes of gas. Fact Sheet: Association of American State Geologists: Hydraulic Fracturing
Top Natural Gas Fields in Colorado Ranked by Production (Fields listed by national ranking on the 2008 Energy Information Agency’s (EIA) Top 100 U.S. Fields Ranked by Gas Production)
| Ranking | Field | State(s) |
| 2 | San Juan Basin Gas Area | CO & NM |
| 10 | Grand Valley | CO |
| 11 | Wattenberg | CO |
| 16 | Raton Basin Gas Area | CO & NM |
| 19 | Rulison | CO |
| 22 | Mamm Creek | CO |
| 29 | Parachute | CO |
| 42 | Piceance Creek | CO |
| 89 | Brush Creek | CO |
| 90 | Sulfur Creek | CO |
| 91 | Vega | CO |
| 95 | Trail Ridge | CO |
| 97 | Buzzard Creek | CO |
Top Natural Gas Fields in Colorado Ranked by Reserves (Fields listed by national ranking on the 2008 Energy Information Agency’s (EIA) Top 100 U.S. Fields Ranked by Gas Reserves)
| Ranking | Field | State(s) |
| 2 | San Juan Basin Gas Area |
CO & NM |
| 9 | Wattenberg |
CO |
| 15 | Raton Basin Gas Area |
CO & NM |
| 11 | Grand Valley | CO |
| 21 | Parachute | CO |
| 22 | Mamm Creek | CO |
| 29 | Rulison | CO |
| 42 | Piceance Creek | CO |
| 57 | Buzzard Creek | CO |
| 61 | Sulfur Creek | CO |
| 64 | Trail Ridge | CO |
| 82 | Brush Creek | CO |
| 87 | Vega | CO |