| Hint | Answer | % Correct |
|---|---|---|
| 1,249 mi | Columbia River | 100%
|
| 187 mi | Willamette River | 100%
|
| 1,078 mi | Snake River | 95%
|
| 251 mi | Deschutes River | 90%
|
| 216 mi | Rogue River | 76%
|
| 112 mi | Umpqua River | 71%
|
| 284 mi | John Day River | 67%
|
| 287 mi | Klamath River | 62%
|
| 83 mi | Clackamas River | 57%
|
| 51 mi | Crooked Creek | 52%
|
| 125 mi | Crooked River | 52%
|
| 88 mi | McKenzie River | 48%
|
| 55 mi | Sandy River | 38%
|
| 50 mi | Molalla River | 33%
|
| 346 mi | Owyhee River | 33%
|
| 69 mi | Siletz River | 33%
|
| 110 mi | Siuslaw River | 33%
|
| 89 mi | Umatilla River | 33%
|
| 190 mi | Malheur River | 29%
|
| 128 mi | Nehalem River | 29%
|
| 64 mi | Pudding River | 29%
|
| 66 mi | South Santiam River | 29%
|
| 110 mi | South Umpqua River | 29%
|
| 83 mi | Tualatin River | 29%
|
| 55 mi | Long Tom River | 24%
|
| 60 mi | Lost River | 24%
|
| 122 mi | Middle Fork Willamette River | 24%
|
| 92 mi | North Santiam River | 24%
|
| 110 mi | North Umpqua River | 24%
|
| 91 mi | Smith River | 24%
|
| 56 mi | Wallowa River | 24%
|
| 51 mi | Applegate River | 19%
|
| 72 mi | Calapooia River | 19%
|
| 56 mi | Chetco River | 19%
|
| 182 mi | Grande Ronde River | 19%
|
| 61 mi | Luckiamute River | 19%
|
| 70 mi | Williamson River | 19%
|
| 98 mi | Burnt River | 14%
|
| 53 mi | Chewaucan River | 14%
|
| 51 mi | Cow Creek (Jordan Creek) | 14%
|
| 75 mi | Cow Creek (South Umpqua River) | 14%
|
| 56 mi | Illinois River | 14%
|
| 73 mi | Imnaha River | 14%
|
| 99 mi | Jordan Creek | 14%
|
| 105 mi | Little Deschutes River | 14%
|
| 51 mi | Minam River | 14%
|
| 117 mi | North Fork John Day River | 14%
|
| 153 mi | Powder River | 14%
|
| 87 mi | Silver Creek | 14%
|
| 84 mi | Sprague River | 14%
|
| 75 mi | Sycan River | 14%
|
| 59 mi | Yaquina River | 14%
|
| 57 mi | Butter Creek | 10%
|
| 54 mi | Dry Creek (Crooked Creek) | 10%
|
| 88 mi | Dry River (Crooked River) | 10%
|
| 54 mi | Fifteenmile Creek | 10%
|
| 75 mi | Middle Fork John Day River | 10%
|
| 53 mi | Nestucca River | 10%
|
| 53 mi | North Fork Coquille River | 10%
|
| 59 mi | North Fork Malheur River | 10%
|
| 119 mi | Silvies River | 10%
|
| 63 mi | South Fork Coquille River | 10%
|
| 76 mi | South Fork Crooked River | 10%
|
| 60 mi | South Fork John Day River | 10%
|
| 60 mi | South Yamhill River | 10%
|
| 50 mi | Walla Walla River | 10%
|
| 53 mi | Warm Springs River | 10%
|
| 79 mi | Willow Creek (Columbia River) | 10%
|
| 57 mi | Willow Creek (Malheur River) | 10%
|
| 62 mi | Bully Creek | 5%
|
| 78 mi | Donner und Blitzen River | 5%
|
| 57 mi | Rattlesnake Creek | 5%
|
| 56 mi | Rock Creek (Catlow Valley) | 5%
|
| 82 mi | Rock Creek (John Day River) | 5%
|
| 67 mi | Succor Creek | 5%
|
| 51 mi | Trout Creek | 5%
|
| 63 mi | West Little Owyhee River | 5%
|