IonBalance: Stream Water Quality

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

Stream Water Quality

Description

Selected ion balance data for County Ditch 65 near Maple Bay, Minnesota (SW2), USGS station number 05079250.

Usage

IonBalance

Format

Data frame with 22 rows and 28 columns

Name	Type	Description
SAMPLE	character	Sample record number
AGNCY	character	Agency code
STAID	character	USGS station number
DATES	Date	Sample date
TIMES	character	Sample time
EDATE	Date	Sample end date (all missing)
ETIME	character	Sample end time (all missing)
MEDIUM	character	Sample medium code (surface water)
H_ion	numeric	Hydrogen ion concentration
Ca	numeric	Calcium ion concentration
Mg	numeric	Magnesium ion concentration
Na	numeric	Sodium ion concentration
K	numeric	Potassium ion concentration
Fe	numeric	Iron ion concentration (all missing)
Mn	numeric	Manganese ion concentration (all missing)
Cation_sum	numeric	Sum of all available cation concentrations
Alk	numeric	Alkalinity concentration
Hydrox	numeric	Hydroxide ion concentration (all missing)
Bicarb	numeric	Bicarbonate ion concentration (all missing)
Carb	numeric	Carbonate ion concentration (all missing)
NO2NO3	numeric	Nitrite plus nitrate ion concentration
NO2	numeric	Nitrite ion concentration (all missing)
NO3	numeric	Nitrate ion concentration (all missing)
Cl	numeric	Chloride ion concentration
SO4	numeric	Sulfate ion concentration
F	numeric	Fluoride ion concentration
Anion_sum	numeric	Sum of all available anion concentrations
Pct_Diff	numeric	Percent difference beteeen Cation_sum and Anion_sum

Note: all concentrations are in milli-equivalents per liter.

Source

Data retrieved from NWISWeb (http://nwis.waterdata.usgs.gov/mn/nwis/qw) on 2012-01-19. The data were modified to represt the concentrations in milli-equivalents per liter.

Examples

data(IonBalance)
# Create a scatter plot matrix of the cations
# Shows the correlation amongst those variables.
# Note that potassium (K) is negatively correlated to the others!
pairs(IonBalance[,c("Ca", "Mg", "Na", "K")])

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