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High frequency water-quality measurements were collected by the U.S. Geological Survey within Willow Creek Reservoir located in Heppner, Oregon. All measurements were taken at 1.5 feet below the surface with a YSI EXO2 multiparameter sonde. Information collected include location, time, water temperature, pH, specific conductance, dissolved oxygen, total chlorophyll, blue-green algae phycocyanin, and turbidity. The measurements were collected while boating around the reservoir at about 2.5 miles per hour.
he hydrodynamic and constituent transport model UnTRIM was used to simulate hydrodynamics in Upper Klamath Lake, a shallow, hypereutrophic lake in which currents are responsive primarily to wind forcing. A simplified version of a dissolved oxygen model was used to simulate the transport of oxygen-depleted water from a deep trench on the western shoreline into important fish habitat in the northern part of the lake. Two scenarios were tested: a strong prevailing wind scenario and a weak prevailing wind scenario. The weak prevailing wind scenario resulted in lower dissolved oxygen concentrations in the deep trench, but higher concentrations in the fish habitat area. In contrast, the strong prevailing wind scenario...
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High frequency water-quality measurements were collected by the U.S. Geological Survey within Willow Creek Reservoir located in Heppner, Oregon. All measurements were taken at 1.5 feet below the surface with a YSI EXO2 multiparameter sonde. Information collected include location, time, water temperature, pH, specific conductance, dissolved oxygen, total chlorophyll, blue-green algae phycocyanin, and turbidity. The measurements were collected while boating around the reservoir at about 2.5 miles per hour.
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A camera was deployed to monitor cyanobacterial surface blooms occurring in Willow Creek Reservoir in Heppner, Oregon. The camera was positioned above the water and facing downwards to achieve the desired contrast in colors. With the appropriate permissions from USACE, the camera was attached to a railing of the Willow Creek Dam in the northwest corner of the reservoir about 70 feet above the surface of the water. The system was powered by a solar panel and large battery. The camera was programmed to take a series of 5 pictures from different angles every 15 minutes during daylight hours. During 2015, the camera was installed on May 14 and retrieved on November 9. A polarizing lens specific to the Axis 214 camera...
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High frequency water-quality measurements were collected by the U.S. Geological Survey within Willow Creek Reservoir located in Heppner, Oregon. All measurements were taken at 1.5 feet below the surface with a YSI EXO2 multiparameter sonde. Information collected include location, time, water temperature, pH, specific conductance, dissolved oxygen, total chlorophyll, blue-green algae phycocyanin, and turbidity. The measurements were collected while boating around the reservoir at about 2.5 miles per hour.
    map background search result map search result map Water Surface Images of Willow Creek Reservoir in Heppner, Oregon (2015 and 2016) Spatial water-quality measurements on June 9, 2015, in Willow Creek Reservoir, Heppner, Oregon Spatial water-quality measurements on August 17, 2016, in Willow Creek Reservoir, Heppner, Oregon Spatial water-quality measurements on September 16, 2016, in Willow Creek Reservoir, Heppner, Oregon Water Surface Images of Willow Creek Reservoir in Heppner, Oregon (2015 and 2016) Spatial water-quality measurements on September 16, 2016, in Willow Creek Reservoir, Heppner, Oregon Spatial water-quality measurements on August 17, 2016, in Willow Creek Reservoir, Heppner, Oregon Spatial water-quality measurements on June 9, 2015, in Willow Creek Reservoir, Heppner, Oregon