Well permits by county
The register covers 65 counties. 63 have at least 500 permits and get a page — together 99.6% of the state total.
| County | Permits | Share |
|---|---|---|
| El Paso | 46,491 | 7.7% |
| Weld | 43,473 | 7.2% |
| Jefferson | 42,751 | 7.1% |
| Adams | 26,561 | 4.4% |
| Park | 22,930 | 3.8% |
| Douglas | 22,500 | 3.7% |
| Larimer | 20,919 | 3.5% |
| Boulder | 20,791 | 3.5% |
| La Plata | 18,518 | 3.1% |
| Elbert | 17,636 | 2.9% |
| Arapahoe | 17,030 | 2.8% |
| Denver | 13,096 | 2.2% |
| Pueblo | 12,597 | 2.1% |
| Yuma | 12,410 | 2.1% |
| Garfield | 12,165 | 2.0% |
| Grand | 11,297 | 1.9% |
| Teller | 10,843 | 1.8% |
| Fremont | 10,353 | 1.7% |
| Chaffee | 10,321 | 1.7% |
| Alamosa | 10,088 | 1.7% |
| Rio Grande | 9,833 | 1.6% |
| Morgan | 9,779 | 1.6% |
| Logan | 9,308 | 1.6% |
| Gunnison | 8,894 | 1.5% |
| Saguache | 8,803 | 1.5% |
| Summit | 8,609 | 1.4% |
| Las Animas | 8,050 | 1.3% |
| Routt | 7,264 | 1.2% |
| Custer | 6,916 | 1.2% |
| Kit Carson | 6,777 | 1.1% |
| Mesa | 6,494 | 1.1% |
| Conejos | 5,774 | 1.0% |
| Washington | 5,722 | 1.0% |
| Clear Creek | 5,556 | 0.9% |
| Baca | 5,424 | 0.9% |
| Pitkin | 4,805 | 0.8% |
| Eagle | 4,742 | 0.8% |
| Gilpin | 4,606 | 0.8% |
| Moffat | 4,379 | 0.7% |
| Costilla | 4,256 | 0.7% |
| Huerfano | 4,190 | 0.7% |
| Lincoln | 4,107 | 0.7% |
| Montrose | 3,965 | 0.7% |
| Delta | 3,935 | 0.7% |
| Prowers | 3,895 | 0.6% |
| Archuleta | 3,805 | 0.6% |
| Rio Blanco | 3,486 | 0.6% |
| San Miguel | 3,416 | 0.6% |
| Otero | 3,393 | 0.6% |
| Phillips | 2,865 | 0.5% |
| Lake | 2,756 | 0.5% |
| Bent | 2,362 | 0.4% |
| Sedgwick | 2,293 | 0.4% |
| Cheyenne | 2,133 | 0.4% |
| Montezuma | 2,111 | 0.4% |
| Jackson | 1,625 | 0.3% |
| Mineral | 1,539 | 0.3% |
| Kiowa | 1,434 | 0.2% |
| Hinsdale | 1,273 | 0.2% |
| Ouray | 1,242 | 0.2% |
| Broomfield | 1,127 | 0.2% |
| Crowley | 1,099 | 0.2% |
| Dolores | 604 | 0.1% |
Why counties and not towns
Because a Colorado well is not located by a town. It is located by its legal description — township, range, section, quarter — and the town field is filled on a minority of permits. A page per town would be a subset of its county page, describing the same permits twice, and built on the weakest field in the file.
Each county page carries what a town page could not: the median depth and yield measured on that county’s own permits. All of them side by side.