Eel River photo by Flickr user Scrubhiker.

If you’re planning to do any swimming, rafting or kayaking in the Eel River this week you’ll want to take extra caution — and maybe a wetsuit. Pacific Gas and Electric, which operates the controversial Potter Valley hydroelectric project up at the river’s headwaters, plans to release extra water into the Eel starting Tuesday and continuing intermittently through Sunday.

This water will make the river not only extra swift but also very cold, which increases risks of heart attack, hypothermia and drowning, PG&E warns. 

Humboldt County has already seen at least two drowning deaths this year, including those of a 22-year-old man swept away in the Trinity and a 33-year-old man pulled underwater in the Eel. 

Press release:

Pacific Gas and Electric Company (PG&E) will increase water flows for maintenance testing at the Potter Valley Powerhouse. The higher flows will begin on June 21 and will continue intermittently until June 26. The flows will increase up to 40 cubic feet per second from the Eel River and down from Scott Dam, as well as the area below Cape Horn Dam.

Those recreating in or near the river are encouraged to use extra caution during the increased flows. This portion of the river contains Class III, IV and V rapids, which are appropriate only for skilled paddlers. The reach is not appropriate for tubing. 

PG&E offers the following water safety tips:

  • Sudden immersion in cold water can stimulate the “gasp reflex,” causing an involuntary inhalation of air or water. It can even trigger cardiac arrest, temporary paralysis, hypothermia and drowning. When faced with swift water, even the strongest swimmers may be easily overwhelmed.
  • Many unseen obstacles can be lurking below the water’s surface. Swift water can make these obstacles even more treacherous. Guided trips for inexperienced paddlers are recommended.
  • Recreating in PG&E canals and flumes is strictly prohibited. Stay out of canals and flumes, which are very dangerous due to slippery sides and fast moving water.