Submitter does not have a specimen
Noticed an unusual shape in the water, got out the camera and shot the attached picture. I am not 100% certain of the identification, but enough that I thought it was worth sending in.
July 14, 2017, 10:48 a.m.
Tanasbrook reservoirs, in the section abutting the East side of 185th. North portion of shore, right outside 18270 NW Cornell Rd.
Mrs. Lindsey Wise Oregon Biodiversity Information Center, inr.oregonstate.edu/orbicOregon iMapInvasivesInstitute for Natural ResourcesPortland State University
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