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 | 87216 | 1 | 35 | 1 | 2 | 1 | 497 | Lewis and Clark-MT (46.79, 111.62) | Butte-ID (43.37, 113.64) | Phillips-MT (49.00, 107.18) | 87 | Silver Bow-MT (46.13, 112.61) | Idaho-ID (45.96, 114.40) | Park-MT (46.13, 110.79) | Idaho-ID (46.44, 114.37) |
2 | 5897 | 2 | 6 | 2 | 1 | 2 | 148 | Multnomah-OR (45.60, 122.86) | Clackamas-OR (44.90, 121.72) | Clatsop-OR (46.29, 124.04) | 25 | Clatsop-OR (45.79, 123.44) | Wahkiakum-WA (46.15, 123.37) | Pacific Ocean (45.73, 123.95) | Yamhill-OR (45.43, 123.45) |
3 | 3635 | 3 | 3 | 2 | 1 | 3 | 123 | Whatcom-WA (48.69, 122.03) | Whatcom-WA (49.00, 123.32) | Whatcom-WA (48.72, 120.65) | 12 | Whatcom-WA (48.82, 121.25) | Skagit-WA (48.64, 121.25) | Canada (49.00, 121.25) | Skagit-WA (48.64, 121.25) |
4 | 3248 | 4 | 1 | 2 | 1 | 6 | 83 | Duchesne-UT (40.31, 110.41) | Duchesne-UT (40.81, 109.98) | Duchesne-UT (39.81, 110.86) | 24 | Duchesne-UT (40.16, 110.44) | Carbon-UT (39.81, 110.44) | Uintah-UT (40.16, 109.98) | Wasatch-UT (40.16, 110.90) |
5 | 2476 | 4 | 1 | 2 | 1 | 4 | 93 | Clallam-WA (48.18, 123.83) | Clallam-WA (48.49, 124.73) | Clallam-WA (47.87, 122.95) | 17 | Clallam-WA (48.12, 124.33) | Jefferson-WA (47.88, 124.33) | Canada (48.35, 124.19) | Pacific Ocean (48.09, 124.69) |
6 | 1901 | 4 | 1 | 2 | 1 | 5 | 85 | Bonneville-ID (43.33, 111.78) | Bonneville-ID (43.02, 111.04) | Bonneville-ID (43.63, 112.52) | 14 | Bonneville-ID (43.36, 111.33) | Teton-ID (43.54, 111.20) | Bingham-ID (43.28, 111.59) | Teton-WY (43.36, 111.05) |
7 | 1782 | 4 | 1 | 2 | 1 | 7 | 65 | Spokane-WA (47.65, 117.43) | Spokane-WA (47.26, 117.82) | Spokane-WA (48.05, 117.04) | 18 | Spokane-WA (47.52, 117.43) | Kootenai-ID (47.52, 117.04) | Lincoln-WA (47.53, 117.82) | Whitman-WA (47.26, 117.43) |
8 | 678 | 4 | 1 | 2 | 1 | 8 | 44 | Benton-OR (44.49, 123.45) | Benton-OR (44.67, 123.09) | Benton-OR (44.32, 123.82) | 9 | Benton-OR (44.47, 123.41) | Linn-OR (44.49, 123.23) | Lincoln-OR (44.47, 123.60) | Linn-OR (44.45, 123.23) |