Winter & Spring Streamflow Characterization Rmd - for Onboarding 2023

[glenncampagna]

@EllaF21 is leading work on this rmd, and here is where we will share info, questions, and any problems

Choosing USGS gauges representative of large basins of interest

Rivers & basins of interest to us:

• James
• Rappahannock
• Shenandoah (both forks)
• Clinch
• Powell
• Roanoke (upstream of NC)

Criteria for gauges:

• We want downstream gauges for rivers to represent large basins/watersheds
• Comparing upstream to downstream gauges could be useful for analysis
• We want gauges upstream of the fall line: geomorphic barrier between Piedmont and Coastal Plain regions of VA characterized by an abrupt elevation change. Areas downstream (east) of the fall lines are impacted by tides, which we do not want impacting this analysis Fall line locations: at Great Falls for the Potomac River, in Fredericksburg for the Rappahannock River, and in Richmond for the James River (14th street bridge)

To-do list:

• [x] Edit chunks to not show up if not needed (ella)
• [x] Box & whisker plots for each year over time pd (meg)
• [x] Graphical comparison of this year with past years (ella)
• [x] Takeaways from analysis (meg)
• [x] Compare current flow conditions to seasonal avg until now as percentile (glenn)
• [x] Use common data frame - can remove aggregation (glenn)
• [x] Add lines for seasonal averages to first graph (glenn)
• [ ] Can we have graphs show December to the left of January?

[durelles]

may consider adding gage on lower Roanoke as well before it enters North Carolina?

[glenncampagna]

Guage Locations and Numbers

Guage #	Location/River
01636500	Shenandoah (into Potomac)
01668000	Rappahannock (Fredericksburg)
02037500	James (Richmond)
03529500	Powell (Big stone gap VA)
03532000	Powell (Arthur TN)
03524000	Clinch (Cleveland VA)
03527220	Clinch (Looneys gap TN)
02066000	Roanoke (Randolph VA)

[EllaF21]

@rburghol @jdkleiner

Running into this error with the IHA package. I have switched to an older R version(4.1.2) and checked my Rtools is installed so unsure what its not liking.

install.packages("IHA") WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding: https://cran.rstudio.com/bin/windows/Rtools/ Installing package into ‘C:/Users/ellaf/OneDrive/Documents/R/win-library/4.1’ (as ‘lib’ is unspecified)

Warning in install.packages : package ‘IHA’ is not available for this version of R A version of this package for your version of R might be available elsewhere, see the ideas at https://cran.r-project.org/doc/manuals/r-patched/R-admin.html#Installing-packages

[glenncampagna]

Custom variables will be used via Render

The render command can be run in the console window of the Rmd to run and knit with the gauge # specified Use: rmarkdown::render([path to rmd], [output file path], params = list([set custom vars])) Example: (glenn's cmnd) rmarkdown::render('~/Desktop/GitHub/HARParchive/HARP-2023-Summer/StreamflowGuagesCaseStudy.Rmd', output_file = '~/Desktop/HARPteam23/streamflowKnit', params = list(rseg.gauge='01636500')) Didn't fully knit and export though:

File C:/HARP/GaugeLocations.png not found in resource path
Error: pandoc document conversion failed with error 99

Update: error fixed and new version knits in html

---

megan's render cmd:

rmarkdown::render('C:/aa_HARP/aa_GitHub/HARParchive/HARP-2023-Summer/StreamflowGuagesCaseStudy.Rmd', output_file = 'C:/aa_HARP/streamflowKnit', params = list(rseg.gauge='01636500'))

---

ella's render cmd:

rmarkdown::render('C:/HARP/HARParchive/HARP-2023-Summer/StreamflowGuagesCaseStudy.Rmd', output_file = 'C:/HARP/streamflowKnit', params = list(rseg.gauge='01636500'))

[glenncampagna]

Initial Results/Findings

• The Rappahannock is experiencing very low flows compared to the long-term average, over 40% lower average flows for both Winter and Spring
• The Clinch river isn't having too low of flows, and the Spring flows are actually higher than average

From 5/18 Meeting

• 3-line graphs effective
• Winter months are most important when predicting summer flows (summertime low flows from low precipitation specifically)
• Winter vs summer analysis could be useful
• Incorporate some IHA metrics? Low flows maybe
• Use ws summary rmd to show model retrieval and more complex analysis
• [ ] Make ws summary into working version for running and comparison
• [ ] Use segment corresponding to the Rappahannock gauge for analysis