There is a Morgan Lake, located in Union County, Oregon, but it does not have a named boat ramp associated with it. Therefore, it is not possible to accurately answer the questions posed in the prompt.
| MEACHAM CREEK AT GIBBON | 444cfs |
| MINAM RIVER NEAR MINAM | 340cfs |
| UMATILLA RIVER ABOVE MEACHAM CREEK | 266cfs |
| UMATILLA R AT W RESERVATION BNDY NR PENDLETON | 573cfs |
| MILL CREEK NEAR WALLA WALLA | 102cfs |
| MILL CREEK AT WALLA WALLA | 304cfs |