| Acreages of Inventoried Roadless Areas within Evolutionarily Significant Units listed by fish Species | |||||
| All acreage figures are rounded to nearest 1,000. | |||||
| Chinook | 1B | 1B-1 | 1C | SUM | |
| California Coastal | 50 | 56 | 105 | ||
| Central Valley Fall | 45 | 18 | 40 | 103 | |
| Central Valley Spring | 45 | 18 | 40 | 103 | |
| Deshutes River Summer/Fall | 7 | 2 | 9 | ||
| Lower Columbia River | 119 | 30 | 149 | ||
| Middle Columbia River Spring | 295 | 14 | 251 | 561 | |
| Oregon Coast | 107 | 32 | 138 | ||
| Puget Sound | 376 | 92 | 468 | ||
| S. Oregon and N. California Coastal | 276 | 175 | 451 | ||
| Sacramento Winter | 45 | 18 | 40 | 103 | |
| Snake River Fall | 251 | 42 | 822 | 1,114 | |
| Snake River Spring/Summer | 870 | 416 | 2,310 | 3,596 | |
| Upper Columbia River Spring | 382 | 1 | 190 | 573 | |
| Upper Columbia River Summer/Fall | 511 | 15 | 263 | 790 | |
| Upper Klamath-Trinity Rivers | 289 | 191 | 480 | ||
| Upper Willamette River | 58 | 46 | 103 | ||
| Washington Coast | 15 | 7 | 22 | ||
| 3,741 | 542 | 4,585 | 8,869 | ||
| Chum | 1B | 1B-1 | 1C | SUM | |
| Puget Sound/Strait of Georgia | 386 | 92 | 479 | ||
| Columbia River | 36 | 1 | 37 | ||
| Pacific Coast | 525 | 302 | 827 | ||
| Hood Canal Summer-Run | 46 | 12 | 58 | ||
| 993 | 408 | 1,401 | |||
| Coho | 1B | 1B-1 | 1C | SUM | |
| Central California | |||||
| Columbia River/S.W. Washington | 124 | 30 | 155 | ||
| N. California/S. Oregon | 624 | 421 | 1,045 | ||
| Olympic Peninsula | 9 | 6 | 15 | ||
| Oregon Coast | 98 | 32 | 130 | ||
| Puget Sound/Strait of Georgia | 386 | 92 | 479 | ||
| 1,241 | 582 | 1,823 | |||
| Cutthroat | 1B | 1B-1 | 1C | SUM | |
| Olympic Peninsula | 9 | 6 | 15 | ||
| Oregon Coastal | 98 | 32 | 129 | ||
| Puget Sound | 386 | 92 | 479 | ||
| Southern Oregon/California Coastal | 624 | 421 | 1,045 | ||
| Southwestern Washington/Columbia River | 125 | 31 | 156 | ||
| Upper Willamette River | 22 | 38 | 59 | ||
| 1,263 | 620 | 1,884 | |||
| Acreages of Inventoried Roadless Areas within Evolutionarily Significant Units listed by fish species. All acreage figures are rounded to nearest 1,000. | |||||
| Sockeye | 1B | 1B-1 | 1C | SUM | |
| Okanogan River | |||||
| Baker River | 26 | 9 | 35 | ||
| Ozette Lake | |||||
| Lake Pleasant | |||||
| Lake Wenatchee | 36 | 36 | |||
| Quinault Lake | 6 | 2 | 8 | ||
| Snake River | 6 | 31 | 141 | 179 | |
| 75 | 31 | 152 | 258 | ||
| Steelhead | 1B | 1B-1 | 1C | SUM | |
| Central California Coast | |||||
| Central Valley | 45 | 18 | 40 | 103 | |
| Klamath Mountains Province | 574 | 366 | 940 | ||
| Lower Columbia River | 119 | 30 | 149 | ||
| Middle Columbia River | 295 | 14 | 251 | 561 | |
| Northern California | 50 | 56 | 105 | ||
| Olympic Peninsula | 9 | 6 | 15 | ||
| Oregon Coast | 98 | 32 | 129 | ||
| Puget Sound | 376 | 92 | 468 | ||
| Snake River Basin | 1,058 | 458 | 2,745 | 4,261 | |
| South-Central California Coast | 23 | 29 | 52 | ||
| Southern California | 80 | 122 | 202 | ||
| Upper Columbia River | 382 | 1 | 190 | 573 | |
| Upper Willamette River | 5 | 22 | 27 | ||
| Washington Coast | 5 | 1 | 6 | ||
| 3,121 | 491 | 3,982 | 7,593 | ||
| Definitions of Categories of Inventoried Roadless Areas | |||||
| 1B | Inventoried roadless area where road construction or reconstruction is not allowed | ||||
| 1B-1 | Inventoried roadless area where road construction or reconstruction is not allowed, and the forest plan recommends as wilderness | ||||
| 1C | Inventoried roadless area where road construction or reconstruction is allowed | ||||