Eel River NowRiver reports · placesShort, dated summaries from official public sources.
An algal mat alert is listed for Rio Dell based on a visual finding and testing that detected cyanotoxins.
California State Water Resources Control Board FHABS program · advisory 2026-08-14 · observation 2026-07-23An algal mat alert is listed near the South Fork confluence based on a visual finding and testing that detected cyanotoxins.
California State Water Resources Control Board FHABS program · advisory 2026-09-03 · observation 2026-08-11An algal mat alert is listed near Fortuna based on a visual finding and testing that detected cyanotoxins.
California State Water Resources Control Board FHABS program · advisory 2026-09-03 · observation 2026-08-11A May 21 public report near Myers Flat remains listed as under investigation. It is not a confirmed current site test.
California State Water Resources Control Board FHABS program · advisory 2026-05-29 · observation 2026-05-21Humboldt County advises visitors to watch for harmful algal blooms, especially in slow or stagnant water. This is regional guidance, not a test of every river spot.
Humboldt County DHHS Environmental Health · advisory 2026-07-24 · observation 2026-07-23River level is steady
Observed Sep 9, 2026, 3:30 PM PDT · provisional23.9 ft³/s flow · 5.12 ft gauge height. Gauge height is a fixed station reference, not the depth at a swimming spot.
River level is steady
Observed Sep 9, 2026, 4:30 PM PDT · provisional35.9 ft³/s flow · 6.22 ft gauge height. Gauge height is a fixed station reference, not the depth at a swimming spot.
River level is steady
Observed Sep 9, 2026, 4:15 PM PDT · provisional103.0 ft³/s flow · 8.8 ft gauge height. Gauge height is a fixed station reference, not the depth at a swimming spot.