Trend analysis results for sites used in RESTORE Streamflow alteration assessments
Dates
Publication Date
2018-12-13
Start Date
1949-04-01
End Date
2015-03-31
Revision
2019-11-25
Citation
Rodgers, K.D., Hoos, A.B., Roland, V.L., and Knight, R.R., 2018, Trend analysis results for sites used in RESTORE Streamflow alteration assessments (ver. 1.1, November 2019): U.S. Geological Survey data release, https://doi.org/10.5066/P9YSE754.
Summary
Daily streamflow discharge data from 139 streamgages located on tributaries and streams flowing to the Gulf of Mexico were used to calculate mean monthly, mean seasonal, and decile values. Streamgages used to calculate trends required a minimum of 65 years of continuous daily streamflow data. These values were used to analyze trends in streamflow using the Mann-Kendall trend test in the R package entitled “Trends” and a new methodology created by Robert M. Hirsch known as a “Quantile-Kendall” plot. Data were analyzed based on water year using the Mann-Kendall trend test and by climate year using the Quantile-Kendall methodology to: (1) identify regions which are statistically similar for estimating streamflow characteristics; (2) identify [...]
Summary
Daily streamflow discharge data from 139 streamgages located on tributaries and streams flowing to the Gulf of Mexico were used to calculate mean monthly, mean seasonal, and decile values. Streamgages used to calculate trends required a minimum of 65 years of continuous daily streamflow data. These values were used to analyze trends in streamflow using the Mann-Kendall trend test in the R package entitled “Trends” and a new methodology created by Robert M. Hirsch known as a “Quantile-Kendall” plot. Data were analyzed based on water year using the Mann-Kendall trend test and by climate year using the Quantile-Kendall methodology to: (1) identify regions which are statistically similar for estimating streamflow characteristics; (2) identify trends related to changing streamflow and streamflow alteration over time; and (3) to identify possible correlations with estuary health in the Gulf of Mexico.
Click on title to download individual files attached to this item.
Longitude and latitude of sites used in RESTORE Streamflow alteration assessments.xlsx “Longitude and latitude of sites used in RESTORE Streamflow alteration assessment”
Metadata for Trend analysis for sites used in RESTORE Streamflow alterations assessments.xml “Metadata for Trend analysis for sites used in RESTORE Streamflow alterations ass” Original FGDC Metadata
Version 1.1 made by Kirk Rodgers on November 25, 2019. To review the changes that were made see 'VersionHistory_1.1.txt' in the attached files section.
