Heather M Bragg
Heather Bragg is a hydrologic technician at the USGS Oregon Water Science Center.
Science and Products
Filter Total Items: 32
Total dissolved gas and water temperature in the lower Columbia River, Oregon and Washington, 2002: Quality-assurance data and comparison to water-quality standards Total dissolved gas and water temperature in the lower Columbia River, Oregon and Washington, 2002: Quality-assurance data and comparison to water-quality standards
Significant Findings The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, collected total-dissolved-gas and water-temperature data at eight sites near dams on the lower Columbia River in 2002. When water is released through the spillways of dams, air is entrained in the water, increasing the concentration of total dissolved gas to levels that can have...
Authors
Dwight Q. Tanner, Matthew W. Johnston, Heather M. Bragg
Quality-assurance data, comparison to water-quality standards, and site considerations for total dissolved gas and water temperature, lower Columbia River, Oregon and Washington, 2001 Quality-assurance data, comparison to water-quality standards, and site considerations for total dissolved gas and water temperature, lower Columbia River, Oregon and Washington, 2001
Significant Findings For eight monitoring sites, in water year 2001, an average of 99.3% of the total-dissolved-gas data were received in real time and passed quality-assurance checks. After 2 to 3 weeks of deployment in the river, most comparisons of field total-dissolved-gas sensors with a secondary standard (another calibrated total-dissolved-gas sensor) were within 1%. The only...
Authors
Dwight Q. Tanner, Heather M. Bragg
Science and Products
Filter Total Items: 32
Total dissolved gas and water temperature in the lower Columbia River, Oregon and Washington, 2002: Quality-assurance data and comparison to water-quality standards Total dissolved gas and water temperature in the lower Columbia River, Oregon and Washington, 2002: Quality-assurance data and comparison to water-quality standards
Significant Findings The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, collected total-dissolved-gas and water-temperature data at eight sites near dams on the lower Columbia River in 2002. When water is released through the spillways of dams, air is entrained in the water, increasing the concentration of total dissolved gas to levels that can have...
Authors
Dwight Q. Tanner, Matthew W. Johnston, Heather M. Bragg
Quality-assurance data, comparison to water-quality standards, and site considerations for total dissolved gas and water temperature, lower Columbia River, Oregon and Washington, 2001 Quality-assurance data, comparison to water-quality standards, and site considerations for total dissolved gas and water temperature, lower Columbia River, Oregon and Washington, 2001
Significant Findings For eight monitoring sites, in water year 2001, an average of 99.3% of the total-dissolved-gas data were received in real time and passed quality-assurance checks. After 2 to 3 weeks of deployment in the river, most comparisons of field total-dissolved-gas sensors with a secondary standard (another calibrated total-dissolved-gas sensor) were within 1%. The only...
Authors
Dwight Q. Tanner, Heather M. Bragg