Model Archive Summary for Suspended-Sediment Concentration at station 11501000, Sprague River near Chiloquin, OR WY 2008-2017 revision and computation for WY 2008-2020

Dates

Publication Date: 2023-06-13
Start Date: 2007-10-01
End Date: 2020-09-30

Citation

Schenk, L.N., 2023, Model Archive Summary for Suspended-Sediment Concentration at station 11501000, Sprague River near Chiloquin, OR WY 2008-2017 revision and computation for WY 2008-2020: U.S. Geological Survey data release, https://doi.org/10.5066/P9QGFMFY.

Summary

This model archive summary (MAS) documents the revision of suspended sediment concentration (SSC) unit and daily values computed from WY 2008-2017, and the additional computation of SSC unit values from WY 2018-2020 using a new log-transformed regression model with SSC samples from the period of record at this site. The new, revised model computes SSC unit values for WY 2008-2020. This model supersedes all prior models for this site. Prior approved models were simple linear, non-transformed regressions with turbidity as the explanatory variable. Evaluation of 90 percent prediction intervals after the records were approved showed that negative values were being reported during periods of low turbidity. As a result, prior approved time [...]

Summary

This model archive summary (MAS) documents the revision of suspended sediment concentration (SSC) unit and daily values computed from WY 2008-2017, and the additional computation of SSC unit values from WY 2018-2020 using a new log-transformed regression model with SSC samples from the period of record at this site. The new, revised model computes SSC unit values for WY 2008-2020. This model supersedes all prior models for this site. Prior approved models were simple linear, non-transformed regressions with turbidity as the explanatory variable. Evaluation of 90 percent prediction intervals after the records were approved showed that negative values were being reported during periods of low turbidity. As a result, prior approved time periods are being revised with the log-transformed model documented in this MAS. These time periods have been flagged as “revised” in the USGS National Water Information System (NWIS), and a revision statement is documented in Aquarius. Prior approved time periods that will be “revised” include WY 2013-2017. This MAS includes additional approval of WY 2008-2013 data, which were not previously approved, but were computed with the prior models. Implementing the new, revised model described in this MAS completes SSC for the period of record where turbidity data and SSC samples were collected, covering WY 2008-2020.

Contacts

Point of Contact :: Liam N Schenk
Metadata Contact :: Liam N Schenk
Publisher :: U.S. Geological Survey
Originator :: Liam N Schenk
Distributor :: U.S. Geological Survey - ScienceBase
SDC Data Owner :: Oregon Water Science Center
USGS Mission Area :: Water Resources

Attached Files

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11501000_logSSC_MAS_Final_dataRelease_508compliant.docx		216.34 KB	application/vnd.openxmlformats-officedocument.wordprocessingml.document
11501000_SSC_metadata_2008-2020.xml Original FGDC Metadata	View	7.81 KB	application/fgdc+xml

Related External Resources

Type: Online Link

Web Link	https://waterdata.usgs.gov/monitoring-location/11501000/#parameterCode=99409&startDT=2017-10-01&endDT=2020-09-30

Purpose

The purpose of this data release is to document the techniques and methods used to develop a turbidity-derived suspended sediment computation model for the Sprague River near Chiloquin, Oregon, USGS site ID 11501000

Model Archive Summary for Suspended-Sediment Concentration at station 11501000, Sprague River near Chiloquin, OR WY 2008-2017 revision and computation for WY 2008-2020

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