Images

View along a bluff in Tanner Creek watershed following the 2017 Eagle Creek Fire, Oregon (Columbia Gorge)

The measurement tape installed in the river bank is called a staff plate. USGS hydrologic technicians use staff gage readings to calibrate sensors depth sensors to make sure data being recorded is accurate. 

Microscopic view of blue green algae sample. Some algae produce toxins that threaten the health and safety of living things that come in direct contact. Cyanobacteria - Phormidium (blue green algae)

Microscopic view of blue green algae sample. Some algae produce toxins that threaten the health and safety of living things that come in direct contact. Cyanobacteria - Scytonema (blue green algae)

Microscopic view of blue green algae sample. Some algae produce toxins that threaten the health and safety of living things that come in direct contact. Cyanobacteria - Phormidium (blue green algae)

Poster: Within Our Reach (2016)

White, J., Jones, K., Buccola, N., Costello, A., Poor, E., Rounds, S.A., and Smith, C., 2016, Effects of beaver dams on urban streams in the Tualatin River Basin.

Natural color image of Fall Creek Lake taken from a UAS

The NUSO performed UAS-based data collection during the November 2016 drawdown at Fall Creek Lake to help determine the effectiveness of this high-resolution imagery for generating digital elevation models (DEMs) with detailed reservoir bathymetry. 

Drawdown of Fall Creek Lake result in lake levels being lowered to the elevation near the historical, pre-dam streambed.

USGS team of scientists electro-shocking (fishing) Zollner Creek, OR.

North Santiam River Valley downstream of Detroit Dam, as viewed from the top of Detroit Dam. 

Microcoelus algae on a rock from Clackamas River at Barton Park, Oregon

Microscopic view of blue green algae sample. Some algae produce toxins that threaten the health and safety of living things that come in direct contact. Cyanobacteria - Nostoc (blue green algae)

Microscopic view of blue green algae sample. Some algae produce toxins that threaten the health and safety of living things that come in direct contact. Cyanobacteria - Nostoc spongiiforme (blue green algae)

Adult and juvenile beaver near Windrose, Oregon

Rock with mat of Phormidium cyanobacteria circled by "rock snot" stalked diatoms. Phormidium is common in western rivers and produces neurotoxins including anatoxins that are highly toxic to dogs, humans, and other wildlife.

Microscopic view of blue green algae sample. Some algae produce toxins that threaten the health and safety of living things that come in direct contact. Cyanobacteria - Dolichospermum (blue green algae)

This dragonfly is called a Cardinal Meadowhawk.

Beaver along bank of pond in Tualatin River Basin, OR

Algal bloom in WIllow Creek Reservoir, Oregon, taken during a photointerpretive study of the lake.

View of the Willow Creek Reservoir near Heppner, OR

Beaver swimming in Summer Lake, Oregon.