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Heather M Bragg

Heather Bragg is a hydrologic technician at the USGS Oregon Water Science Center.

Science and Products

Sediment transport, turbidity, and dissolved oxygen responses to annual streambed drawdowns for downstream fish passage in a flood control reservoir

Sediment transport, turbidity, and dissolved oxygen were evaluated during six consecutive water years (2013–2018) of drawdowns of a flood control reservoir in the upper Willamette Valley, Oregon, USA. The drawdowns were conducted to allow volitional passage of endangered juvenile chinook salmon through the dam's regulating outlets by lowering the reservoir elevation to a point where the historical
Authors
Liam N. Schenk, Heather M. Bragg
By
Water Resources Mission Area, Oregon Water Science Center

Monitoring the effect of deep drawdowns of a flood control reservoir on sediment transport and dissolved oxygen, Fall Creek Lake, Oregon

Annual reservoir drawdowns at Fall Creek Lake, Oregon, have occurred for eight consecutive years from December 2012 to November 2019. The annual drawdowns are the result of the 2008 Biological Opinion of the US Army Corps of Engineers (USACE) Willamette Valley Project operations, which directed the USACE to carry out interim operational measures that would provide volitional downstream passage for
Authors
Liam N. Schenk, Heather M. Bragg
By
Water Resources Mission Area, Oregon Water Science Center
link
Detroit Dam

Willamette River Basin Dissolved Gas Monitoring Network

USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along tributaries of the Willamette River.
By
Oregon Water Science Center
link

Willamette River Basin Dissolved Gas Monitoring Network

USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along tributaries of the Willamette River.
Learn More
link
Bonneville Dam

Lower Columbia River Dissolved Gas Monitoring Network

USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along the lower Columbia River.
By
Oregon Water Science Center
link

Lower Columbia River Dissolved Gas Monitoring Network

USGS total dissolved gas (TDG) data help guide spill and discharge management from dams operated along the lower Columbia River.
Learn More
link
Water-quality depth profiler on Detroit Lake - North Santiam River, Oregon

North Santiam River Basin Study

The streamflow and water-quality conditions monitored by the USGS in the North Santiam River basin provide valuable information to water resource managers
By
Water Resources Mission Area, National Water Quality Program, Oregon Water Science Center
link

North Santiam River Basin Study

The streamflow and water-quality conditions monitored by the USGS in the North Santiam River basin provide valuable information to water resource managers
Learn More
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Science and Products