area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 | FGR (miles) | center county and point | county 1 and point | county 2 and point | county 3 and point |
1 | 556386 | 1 | 155 | 1 | 8 | 1 | 1173 | White Pine-NV (38.68, 114.27) | Gilliam-OR (45.74, 120.65) | Cochise-AZ (31.33, 109.05) | 304 | Lincoln-NV (37.12, 114.55) | Mexico (32.72, 114.72) | Montezuma-CO (37.23, 109.05) | Merced-CA (37.18, 120.05) |
2 | 18426 | 4 | 3 | 3 | 1 | 3 | 243 | Fremont-WY (43.48, 109.25) | Fremont-WY (42.26, 107.52) | Teton-WY (44.67, 111.06) | 49 | Sublette-WY (42.98, 109.61) | Lincoln-WY (42.98, 110.59) | Sweetwater-WY (42.26, 109.62) | Hot Springs-WY (43.62, 109.17) |
3 | 14015 | 2 | 5 | 2 | 2 | 2 | 299 | Big Horn-WY (44.87, 108.35) | Johnson-WY (43.50, 106.02) | Park-MT (46.19, 110.78) | 28 | Johnson-WY (43.90, 106.57) | Washakie-WY (43.82, 107.11) | Campbell-WY (43.91, 106.01) | Washakie-WY (43.91, 107.13) |
4 | 12604 | 3 | 4 | 3 | 1 | 4 | 186 | Camas-ID (43.55, 114.59) | Blaine-ID (42.68, 113.18) | Boise-ID (44.15, 116.27) | 34 | Custer-ID (44.06, 114.13) | Butte-ID (44.06, 113.46) | Lemhi-ID (44.49, 113.82) | Camas-ID (43.81, 114.70) |
5 | 6193 | 6 | 1 | 3 | 1 | 5 | 118 | Brewster-TX (29.82, 103.30) | Brewster-TX (28.97, 103.15) | Brewster-TX (30.67, 103.44) | 34 | Brewster-TX (29.88, 103.23) | Presidio-TX (29.88, 103.80) | Mexico (29.64, 102.74) | Pecos-TX (30.27, 102.87) |
6 | 3814 | 6 | 1 | 3 | 1 | 7 | 106 | Culberson-TX (31.33, 104.47) | Culberson-TX (30.66, 104.92) | Culberson-TX (32.00, 104.02) | 25 | Culberson-TX (31.63, 104.49) | Eddy-NM (32.00, 104.48) | Hudspeth-TX (31.63, 104.91) | Reeves-TX (31.61, 104.06) |
7 | 2786 | 6 | 1 | 3 | 1 | 6 | 112 | Pennington-SD (44.12, 102.99) | Pennington-SD (44.51, 102.00) | Pennington-SD (43.85, 104.06) | 16 | Pennington-SD (43.92, 102.33) | Meade-SD (44.14, 102.39) | Shannon-SD (43.69, 102.34) | Jackson-SD (43.92, 102.02) |
8 | 2415 | 5 | 2 | 3 | 1 | 9 | 76 | Clackamas-OR (45.38, 122.10) | Clackamas-OR (45.13, 122.79) | Hood River-OR (45.70, 121.44) | 20 | Clackamas-OR (45.17, 122.25) | Marion-OR (45.02, 122.60) | Marion-OR (44.89, 122.25) | Multnomah-OR (45.46, 122.25) |
9 | 2130 | 6 | 1 | 3 | 1 | 10 | 67 | El Paso-CO (38.83, 104.54) | El Paso-CO (38.52, 104.05) | El Paso-CO (39.13, 105.03) | 21 | El Paso-CO (38.82, 104.55) | Elbert-CO (39.13, 104.55) | Teller-CO (38.80, 104.94) | Pueblo-CO (38.52, 104.55) |
10 | 1806 | 6 | 1 | 3 | 1 | 8 | 77 | Pierce-WA (47.10, 122.12) | Pierce-WA (47.40, 122.80) | Pierce-WA (46.79, 121.44) | 14 | Pierce-WA (46.96, 122.07) | King-WA (47.14, 121.94) | Thurston-WA (46.83, 122.30) | Lewis-WA (46.75, 122.08) |
11 | 1218 | 6 | 1 | 3 | 1 | 12 | 59 | Slope-ND (46.45, 103.49) | Slope-ND (46.63, 102.93) | Slope-ND (46.28, 104.05) | 12 | Slope-ND (46.45, 103.52) | Billings-ND (46.63, 103.52) | Bowman-ND (46.28, 103.52) | Bowman-ND (46.28, 103.52) |
12 | 1168 | 6 | 1 | 3 | 1 | 11 | 64 | Bernalillo-NM (35.05, 106.67) | Bernalillo-NM (35.22, 107.20) | Bernalillo-NM (34.87, 106.15) | 12 | Bernalillo-NM (35.04, 106.88) | Sandoval-NM (35.22, 106.88) | Cibola-NM (34.98, 107.08) | Valencia-NM (34.87, 106.88) |