Sewage and stormwater began spilling into the Willamette River around 2:30 on Sunday afternoon, when weekend rains overflowed Portland’s Big Pipe system. The sewage-stormwater mix drained into ...

PORTLAND, Ore. (KATU) — Heavy rains over the weekend caused a rare combined sewer overflow (CSO) into the Willamette River as the Big Pipe system reached capacity around 2:30 p.m. on Sunday ...

Human Access Project, an advocacy group formed to promote a safer Willamette River, hosted the swim to celebrate a full year without any Combined Sewer Overflows (CSOs). Campfires and saunas were ...

PORTLAND, Ore. (KOIN) — A combined sewer overflow advisory is in effect for the Willamette River following the weekend’s heavy rains, the City of Portland announced on Sunday afternoon.