Washington County may have the Unified Sewerage Agency to take the lead for the Tualatin River, but precious few other jurisdictions in the region have such an entity, or the resources to craft responses from scratch. Metro doesn't have to impose a rigid and detailed plan on the region. But the agency should certainly take the lead in creating a menu of acceptable actions for cities and counties to take. And Metro can ensure that the menu fits into other growth-management efforts. Further, nothing prevents Washington County and the Unified Sewerage Agency from promoting their approach to Metro.
Fish know no local boundaries.
Efforts to save them shouldn't, either.