Due to the Coronavirus pandemic, all of our staff are currently working remotely. The easiest way to reach us is via email. If you prefer to leave a voicemail, please call (206) 521-3000 and leave a message.

Whatever it is, we care.

Feel free to ask us anything or pick our brains about your specific river or stream challenge via phone or email. We look forward to hearing from you.


(206) 521-3000

Jeff Johnson

Principal Hydraulic Engineer and Geomorphologist


Larry Karpack

Principal Hydrologist and Hydraulic Engineer



Watershed Science & Engineering

Smith Tower, 506 2nd Ave, Suite 2700

Seattle, WA 98104

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