bf_rora: Estimate recharge by means of hydrograph recession...

Description Usage Arguments Value

View source: R/rora.R

Description

Estimate recharge by the method of hydrograph recession displacement.

Usage

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bf_rora(date, discharge, da, recessIndex, minimum_discharge = 0.01,
  incAnteRec = 0, STAID = NULL)

Arguments

date

the date of the flow, can be either character or class "Date."

discharge

the mean daily discharge for the corresponding date.

da

the drainage area of the basin in square miles.

recessIndex

the recession index, in days per common log cycle. This is typically estimated using recess.

minimum_discharge

the value to use for the minimum value in discharge. Any value in discharge less than the value for minimum_discharge is set to the value for minimum_discharge.

incAnteRec

a value to add to the base antecedent recession time, in days. In general, this should always be 0.

STAID

a character string to be used as the station identifier. This is used only for documentation when printing or plotting.

Value

An object of class rora, which has these components:
iyear, the year of the observed streamflow.
imonth, the month of the observed streamflow.
iday, the day of the observed streamflow.
discharge, the observed streamflow.
Nobs, the number of observed values of streamflow.
iyearst, the starting year of the recharge analysis.
iyearen, the ending year of the recharge analysis.
minQ, the value of minQ.
idiff, the value of incAnteRec.
k, the value of recessIndex.
te, the time to end day of the recession following a peak in streamflow, in days.
ta, the time at the critical time after the previous peak.
qp, the streamflow of the peak.
qa, the streamflow the critical time after the previous peak.
qb, the streamflow at the critical time that would have occurred in the absence of the current and any subsequent peaks.
qc, the streamflow at the critical time that would have occurred in the absence of any subsequent peaks.
c, the average value for the current peak calculated from the difference between the flow during recession and flow computed from the recession index for each day between the peak and the critical time.
delq, the difference in flow between the hypothetical flow at the critical time after the current peak and the hypothetical flow at the critical time after the previous peak.
rech, the estimated recharge for the peak, in inches.
year, the year of the peak.
mon, the month of the peak.
day, the day of the peak.
npeaks, the number of peaks.
itbase, the antecedent flow base time, in days. This is the minimum time from a peak to when the flow can be considered to be ground-water discharge.
ierr, the error code.
STAID, the station identifier.


smwesten-usgs/recharge documentation built on Jan. 27, 2020, 3:08 p.m.