This week, the Human Access Project cancelled two popular Willamette River events. An OSU professor confirmed toxic cyanobacteria, Microcystis, in the Ross Island Lagoon. This makes the 2026 annual algae bloom a significant concern for local recreation. These cancellations, impacting public access and community events, feel like a punch to the gut for anyone looking forward to a refreshing splash or a riverside gathering.

Here's the kicker: Our very efforts to increase public access and enjoyment of urban rivers are being directly undermined by the escalating threat of harmful algae blooms. We strive to make the river more accessible, yet these blooms turn our urban waterways into health hazards.

Without confronting the root causes of stagnant water and nutrient pollution, Oregonians can expect more frequent and widespread recreational advisories and cancellations in the coming years. This isn't just a temporary inconvenience; it's a stark warning of a deeper, systemic issue.

Toxic Bloom Confirmed in Willamette's Ross Island Lagoon

  • Desirée Tullos, an OSU Professor of Biological and Ecological Engineering, confirmed Microcystis, a genus of toxic cyanobacteria, in the Ross Island Lagoon, according to KATU.
  • The Human Access Project (HAP) and the Lloyd Eco District swiftly canceled 'Friday Splashdown' at Audrey McCall Beach and 'Lloyd Live!' at Duckworth Dock, as reported by KPTV.
  • This alarming development follows the excavation of a newly merged island, which created a massive 140-acre stagnant pool, 120 feet deep, according to humanaccessproject.

These cancellations, directly linked to confirmed toxins, reveal an immediate and localized threat to public health and recreation. The very places we seek for enjoyment are now declared hazardous.

Human Activity May Fuel Local Blooms

Oregon's vision for vibrant urban river recreation now clashes with the ecological fallout of past river alterations. The excavation of a former island created a 140-acre, 120-foot-deep stagnant pool in the Willamette. This human intervention inadvertently engineered perfect conditions for toxic algae, turning intended public access points into health hazards. The irony is stark: our efforts to shape the river for enjoyment may be making it sick.