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Paul Diaz, Jr.

Paul Diaz is a hydrologist at the USGS Oregon Water Science Center.

Science and Products

Evaluating external nutrient and suspended-sediment loads to Upper Klamath Lake, Oregon, using surrogate regressions with real-time turbidity and acoustic backscatter data

Executive SummarySuspended-sediment and total phosphorus loads were computed for two sites in the Upper Klamath Basin on the Wood and Williamson Rivers, the two main tributaries to Upper Klamath Lake. High temporal resolution turbidity and acoustic backscatter data were used to develop surrogate regression models to compute instantaneous concentrations and loads on these rivers. Regression models
Authors
Liam N. Schenk, Chauncey W. Anderson, Paul Diaz, Marc A. Stewart
By
Water Resources Mission Area, Oregon Water Science Center

Comparison of Water Years 2004-05 and Historical Water-Quality Data, Upper Gunnison River Basin, Colorado

Population growth and changes in land use have the potential to affect water quality and quantity in the upper Gunnison River Basin. In 1995, the U.S. Geological Survey (USGS), in cooperation with the Bureau of Land Management, City of Gunnison, Colorado River Water Conservation District, Crested Butte South Metropolitan District, Gunnison County, Hinsdale County, Mount Crested Butte Water and San
Authors
Norman E. Spahr, David M. Hartle, Paul Diaz
By
Water Resources Mission Area, Colorado Water Science Center

Evaluation of the Acoustic Doppler Velocity Meter for Computation of Discharge Records at Three Sites in Colorado, 2004-2005

The U.S. Geological Survey (USGS), in cooperation with the Colorado Water Conservation Board, conducted a study in 2004-2005 at three sites in Colorado: Bear Creek at Morrison, Clear Creek near Empire, and Redlands Canal near Grand Junction. The study was done to evaluate acoustic Doppler velocity meter (ADVM) technology in different hydrologic settings that are characteristic of many Colorado str
Authors
Michael R. Stevens, Paul Diaz, Dennis E. Smits
By
Colorado Water Science Center
link
Upstream view of the North Santiam river. River channel is lined with trees, shrubs and rocks. Clear blue sky.

Multiscale comparison of hyperspectral reflectance from periphyton in three Oregon rivers used for municipal supply

In this study, USGS scientists from multiple centers used advanced hyperspectral imaging techniques to advance monitoring of attached benthic algae (periphyton) in Cascade Range rivers used for municipal water supply. Periphyton are naturally occurring, but excess growth can harm ecosystems and degrade raw and treated drinking water quality. In these rivers, periphyton contain cyanobacteria that...
By
Oregon Water Science Center
link

Multiscale comparison of hyperspectral reflectance from periphyton in three Oregon rivers used for municipal supply

In this study, USGS scientists from multiple centers used advanced hyperspectral imaging techniques to advance monitoring of attached benthic algae (periphyton) in Cascade Range rivers used for municipal water supply. Periphyton are naturally occurring, but excess growth can harm ecosystems and degrade raw and treated drinking water quality. In these rivers, periphyton contain cyanobacteria that...
Learn More

Model Archive Summary for acoustic derived suspended-sediment concentration at 14211720 Willamette River at Portland, OR

Model archive summary describing the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Willamette River at Portland site - USGS site ID# 14211720. The time series suspended sediment data will help determine the suspended sediment concentration at the site in real-time
By
Oregon Water Science Center

Model Archive Summary for acoustic derived suspended-sediment concentration at 14144700 Columbia River at Vancouver, WA

Model archive summary describing the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Columbia River at Vancouver site - USGS site ID# 14144700. The time series suspended sediment data will help determine the suspended sediment concentration at the site in real-tim
By
Oregon Water Science Center

Model Archive Summary for acoustic derived suspended-sediment concentration at 14246900 Columbia River at Port Westward NR Quincy, OR

Model archive summary describing the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Columbia River at Port Westward site - USGS site ID# 14246900. The time series suspended sediment data will help determine the suspended sediment concentration at the site in real
By
Oregon Water Science Center
No results found.

Science and Products

Evaluating external nutrient and suspended-sediment loads to Upper Klamath Lake, Oregon, using surrogate regressions with real-time turbidity and acoustic backscatter data

Executive SummarySuspended-sediment and total phosphorus loads were computed for two sites in the Upper Klamath Basin on the Wood and Williamson Rivers, the two main tributaries to Upper Klamath Lake. High temporal resolution turbidity and acoustic backscatter data were used to develop surrogate regression models to compute instantaneous concentrations and loads on these rivers. Regression models
Authors
Liam N. Schenk, Chauncey W. Anderson, Paul Diaz, Marc A. Stewart
By
Water Resources Mission Area, Oregon Water Science Center

Comparison of Water Years 2004-05 and Historical Water-Quality Data, Upper Gunnison River Basin, Colorado

Population growth and changes in land use have the potential to affect water quality and quantity in the upper Gunnison River Basin. In 1995, the U.S. Geological Survey (USGS), in cooperation with the Bureau of Land Management, City of Gunnison, Colorado River Water Conservation District, Crested Butte South Metropolitan District, Gunnison County, Hinsdale County, Mount Crested Butte Water and San
Authors
Norman E. Spahr, David M. Hartle, Paul Diaz
By
Water Resources Mission Area, Colorado Water Science Center

Evaluation of the Acoustic Doppler Velocity Meter for Computation of Discharge Records at Three Sites in Colorado, 2004-2005

The U.S. Geological Survey (USGS), in cooperation with the Colorado Water Conservation Board, conducted a study in 2004-2005 at three sites in Colorado: Bear Creek at Morrison, Clear Creek near Empire, and Redlands Canal near Grand Junction. The study was done to evaluate acoustic Doppler velocity meter (ADVM) technology in different hydrologic settings that are characteristic of many Colorado str
Authors
Michael R. Stevens, Paul Diaz, Dennis E. Smits
By
Colorado Water Science Center
link
Upstream view of the North Santiam river. River channel is lined with trees, shrubs and rocks. Clear blue sky.

Multiscale comparison of hyperspectral reflectance from periphyton in three Oregon rivers used for municipal supply

In this study, USGS scientists from multiple centers used advanced hyperspectral imaging techniques to advance monitoring of attached benthic algae (periphyton) in Cascade Range rivers used for municipal water supply. Periphyton are naturally occurring, but excess growth can harm ecosystems and degrade raw and treated drinking water quality. In these rivers, periphyton contain cyanobacteria that...
By
Oregon Water Science Center
link

Multiscale comparison of hyperspectral reflectance from periphyton in three Oregon rivers used for municipal supply

In this study, USGS scientists from multiple centers used advanced hyperspectral imaging techniques to advance monitoring of attached benthic algae (periphyton) in Cascade Range rivers used for municipal water supply. Periphyton are naturally occurring, but excess growth can harm ecosystems and degrade raw and treated drinking water quality. In these rivers, periphyton contain cyanobacteria that...
Learn More

Model Archive Summary for acoustic derived suspended-sediment concentration at 14211720 Willamette River at Portland, OR

Model archive summary describing the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Willamette River at Portland site - USGS site ID# 14211720. The time series suspended sediment data will help determine the suspended sediment concentration at the site in real-time
By
Oregon Water Science Center

Model Archive Summary for acoustic derived suspended-sediment concentration at 14144700 Columbia River at Vancouver, WA

Model archive summary describing the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Columbia River at Vancouver site - USGS site ID# 14144700. The time series suspended sediment data will help determine the suspended sediment concentration at the site in real-tim
By
Oregon Water Science Center

Model Archive Summary for acoustic derived suspended-sediment concentration at 14246900 Columbia River at Port Westward NR Quincy, OR

Model archive summary describing the development of an acoustic derived suspended sediment time series computation model. The model archive summary describes the methods and techniques used to develop the model for the Columbia River at Port Westward site - USGS site ID# 14246900. The time series suspended sediment data will help determine the suspended sediment concentration at the site in real
By
Oregon Water Science Center
No results found.
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