KlamathTP: Stream Water Quality

In USGS-R/smwrData: Example hydrologic data to support statistical methods in water resources

Stream Water Quality

Description

Total phosphorus concentrations and streamflow data from the Klamath River near Klamath, California, USGS station number 11530500.

Usage

KlamathTP

Format

Data frame with 80 rows and 6 columns

Name	Type	Description
site_no	character	USGS station number
sample_dt	Date	Sample date
TP_rmk	character	Remark code for total phosphorus concentration
TP	numeric	Total phosphorus concetration
Flow	numeric	Streamflow, may be either daily mean or measured
TP_ss	numeric	Total phosphorus concetration, modified for censoring

Note: all concentrations are in milligrams per liter as phosphorus, the streamflow rates are in cubic feet per second.

Source

Data retrieved from NWISWeb (http://nwis.waterdata.usgs.gov/ca/nwis/qw) on 2012-07-13. The data were retrieved and modified to replicate the results in Smith and others (1982).

References

Smith, R.A., Hirsch, R.M, and Slack, J.R., 1982, A study of trends in total phosphorus measurements at NASQAN stations: U.S. Geological Circular 2190, 34 p. Also available at http://pubs.usgs.gov/wsp/2190/report.pdf.

Examples

data(KlamathTP)
par(mfrow=c(2,1), mar=c(5.1, 4.1, .5, .5))
# TP concentration over time (figure 11A in Smith and others (1982))
with(KlamathTP, plot(sample_dt, TP_ss))
abline(.15, -0.0000137) # Coefficients modified for actual graph units
# Flow (or discharge) and TP concentration (figure 3A in Smith and others, 1982)
with(KlamathTP, plot(Flow, TP_ss))
abline(0.014, 0.0000054) # Note difference in intercept

USGS-R/smwrData documentation built on Oct. 18, 2022, 9:56 a.m.