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FlowScreen (version 0.9)

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

186

Version

0.9

License

GPL (>= 2)

Maintainer

Jennifer Dierauer

Last Published

March 19th, 2016

Functions in FlowScreen (0.9)

pk.cov

Center of Volume
read.flows

Read .csv or .Rdata file of streamflows
get.station.internal

Get station information for USGS or WSC hydrometric stations
dr.pds

Get the partial duration series for streamflow droughts
pk.max.doy

Day of year for annual maximum series
screen.summary.internal

Internal wrapper for creating trend and change-point summary plots
MAMn

Calculate mean annual minimum n-day flows
caniapiscau.res

Screening results for the Caniapiscau River
screen.metric

Plot a metric with trend and change points
axis_doy.internal

Create custom axis starting on hyrologic year start month
NA.runs

Missing data runs for daily time series.
create.ts

Create a Time Series of daily streamflow observations
mqt

Moving quantile threshold
metrics.all

Streamflow metrics
bf.seas

Seasonal baseflow percentage
pks

Get the flow peaks over a threshold
FlowScreen

Screen Daily Discharge Time Series for Temporal Trends and Change Points
pk.max

Annual maximum series
caniapiscau

Caniapiscau River Daily Flows
screen.cpts

Change point time series plot
FDC

Flow Duration Curve
bf.stats

Baseflow statistics
get.titles.internal

Returns plot titles and labels based on plot type and language preference
Qn

Calculate flow quantiles
bf_boughton

Boughton recursive digital filter
pks.dur

Calculate the inter-event duration
bf_eckhardt

Eckhardt two parameter recursive digital filter
station.info

Retrieve Station Info
regime

Plot flow regime
NA.sum

Sum missing data points from a daily time series
pk.bf.stats

Calculate baseflow peak statistics
cania.sub.ts

Subset of the Caniapiscau River Daily Flows
hyear.internal

Add hydrologic Year, month, and doy columns to a daily time series
bf_oneparam

One parameter recursive digital filter
dr.seas

Find the start, middle, end, and duration of seasonal droughts
screen.series

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

Plot one or more frames from the summary screening plot
screen.summary

Create a screening plot
screen.frames.internal

Internal wrapper for creating trend and change-point plots
YMD.internal

Add calendar year, month, and day of year columns
dr.events

Partial Duration Series and Event Statistics for streamflow droughts