lfstat0.9.12 package

Calculation of Low Flow Statistics for Daily Stream Flow Data

apply.seasonal

Apply an aggregation function seasonally.

as.lfobj

Coerce to class 'lfobj'

as.xts.lfobj

Convert Object To Class 'xts'

baseflow

Calculate the base flow of a river

BFI

Base Flow Index

bfplot

Base Flow Plot

cdf_ev

Reversed functions for several Extreme Value Distributions

check_distribution

Checks if a Distribution is suited

createlfobj

Create an low flow object for further Low Flow Analysis

dmcurve

Double Mass Curve

ev_return_period

Estimate the return period for given quantiles

evfit

Fit an extreme value distribution to observations

evquantile

Estimating populations quantiles of extreme values

fdc

Flow Duration Curve

fill_na

Interpolation NA values in a vector

find_droughts

Identifying Low Flow Periods

flowunit

Set and retrieve unit of the discharge

gringorten

Gringorten Plotting Positions

hydrograph

Hydrograph

hyear_start

Extract or guess the Start of a Hydrological Year

lfnacheck

Low flow object check for missing values.

lfnainterpolate

Interpolate missing values

lfstat-package

tools:::Rd_package_title("lfstat")

ma

Simple Moving Average

MAM

Mean Annual Minimum

meanflow

Mean flow

multistationsreport

Report for several stations

plot.deficit

Plot time series of deficits

pool_ic

Pooling Procedures of Low Flow Events

Q95

Qxx, Q95, Q90, Q70

rainpeakplot

Recession diagnostic plot

readlfdata

Reads data sheets

recession

Recession Constant

rfa

Regional Frequency Analysis

rfaplot

Regional Frequency Analysis

rpline

Highlight quantiles/return periods

sbplot

Seasonal Bar Chart

seasindex

Seasonality Index

season

Attribute dates to seasons

seasratio

Seasonality Ratio

seglenplot

Bar chart of recession length

setlfunit

Define the unit to use in low flow plots

streamdef

Streamflow Deficit

streamdefplot

Streamflow Deficit Plot

summary.deficit

Object Summaries

trace_value

Draw Paths to Points perpendicular to Coordinate Axis

tyears

Calculate Low-Flow Quantiles for given Return Periods

tyearsS

Calculate Low-Flow Quantiles for given Return Periods

vary_threshold

Create varying thresholds

water_year

Compute the water year

The "Manual on Low-flow Estimation and Prediction" (Gustard & Demuth (2009, ISBN:978-92-63-11029-9)), published by the World Meteorological Organisation, gives a comprehensive summary on how to analyse stream flow data focusing on low-flows. This packages provides functions to compute the described statistics and produces plots similar to the ones in the manual.

  • Maintainer: Tobias Gauster
  • License: GPL (>= 2)
  • Last published: 2022-11-08