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FlowScreen (version 1.2.6)

Daily Streamflow Trend and Change Point Screening

Description

Screens daily streamflow time series for temporal trends and change-points. This package has been primarily developed for assessing the quality of daily streamflow time series. It also contains tools for plotting and calculating many different streamflow metrics. The package can be used to produce summary screening plots showing change-points and significant temporal trends for high flow, low flow, and/or baseflow statistics, or it can be used to perform more detailed hydrological time series analyses. The package was designed for screening daily streamflow time series from Water Survey Canada and the United States Geological Survey but will also work with streamflow time series from many other agencies.

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Version

Install

install.packages('FlowScreen')

Monthly Downloads

368

Version

1.2.6

License

GPL (>= 2)

Maintainer

Jennifer Dierauer

Last Published

April 5th, 2019

Functions in FlowScreen (1.2.6)

create.ts

Create a Time Series of daily streamflow observations
dr.events

Partial Duration Series and Event Statistics for streamflow droughts
get.station.internal

Get station information for USGS or WSC hydrometric stations
get.titles.internal

Returns plot titles and labels based on plot type and language preference
screen.frames

Plot one or more frames from the summary screening plot
dr.seas

Find the start, middle, end, and duration of seasonal droughts
hyear.internal

Add hydrologic Year, month, and doy columns to a daily time series
dr.pds

Get the partial duration series for streamflow droughts
screen.frames.internal

Internal wrapper for creating trend and change-point plots
metrics.all

Streamflow metrics
NA.sum

Sum missing data points from a daily time series
bf_eckhardt

Eckhardt two parameter recursive digital filter
pk.max.doy

Day of year for annual maximum series
screen.series

Create a plot of the daily streamflow time series
screen.metric

Plot a metric with trend and change points
pks

Get the flow peaks over a threshold
Qn

Calculate flow quantiles
pk.max

Annual maximum series
bf_oneparam

One parameter recursive digital filter
caniapiscau

Caniapiscau River Daily Flows
caniapiscau.res

Screening results for the Caniapiscau River
cania.sub.ts

Subset of the Caniapiscau River Daily Flows
pks.dur

Calculate the inter-event duration
pk.cov

Center of Volume
screen.cpts

Change point time series plot
regime

Plot flow regime
read.flows

Read .csv or .Rdata file of streamflows
mqt

Moving quantile threshold
pk.bf.stats

Calculate baseflow peak statistics
screen.summary

Create a screening plot
station.info

Retrieve Station Info
screen.summary.internal

Internal wrapper for creating trend and change-point summary plots
bf.seas

Seasonal baseflow percentage
MAMn

Calculate mean annual minimum n-day flows
bf.stats

Baseflow statistics
NA.runs

Missing data runs for daily time series.
YMD.internal

Add calendar year, month, and day of year columns
FDC

Flow Duration Curve
FlowScreen

Screen Daily Discharge Time Series for Temporal Trends and Change Points
axis_doy.internal

Create custom axis starting on hyrologic year start month
bf_boughton

Boughton recursive digital filter