QWall: Stream Water Quality

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

Stream Water Quality

Description

Whole-water or total phosphorus data for selected USGS streamgages for calendar year 2003.

Usage

QWall

Format

Data frame with 23 rows and 4 columns

Name	Type	Description
STAID	character	USGS station number
DATES	Date	Sample date
TIMES	character	Sample time
R00665	character	Remark code for total phosphorus concentration
P00665	numeric	Total phosphorus concentration

Note: all concentrations are in milligrams per liter as phosphorus.

Source

Data retrieved from NWISWeb (http://nwis.waterdata.usgs.gov/mn/nwis/qw) on 2005-01-05.

Examples

data(QWall)
# Plot the data for station 05078770
with(subset(QWall, STAID == "05078770"), plot(DATES, P00665, log='y', ylim=c(0.001, 0.2)))
# Overlay the data for station 05078470, smaller values and missing the sample in late April.
with(subset(QWall, STAID == "05078470"), points(DATES, P00665, col='red'))

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