VGPW_CHEM
Description:
Water chemistry data for concurrent surface and porewater samples, organized by sampling location, sampling time, and solute (DIN species, DOC, and water isotopes).
File:
Variables (click to expand):
DATASET_CODE
- Label: Dataset Code
- Definition: Internal dataset code.
- Type: Nominal
- Missing values: None specified
STRMGAGEID
- Label: Stream Gage ID
- Definition: Stream Gage ID.
- Type: Nominal
- Missing values: None specified
STREAM_NAME
- Label: Stream Name
- Definition: Name of the stream.
- Type: Nominal
- Missing values: None specified
SAMPLE_ID
- Label: Sample ID
- Definition: Alphanumeric code indicating sample year and sequential number.
- Type: Nominal
- Missing values: None specified
DATE_TIME
- Label: Date and Time
- Definition: Date and time of sample collection (MM/DD/YYYY HH:MM UTC+13).
- Type: Date/time
- Date format: MM/DD/YYYY HH:MM UTC+13
- Missing values: None specified
SAMPLE_TYPE
- Label: Sample Type
- Definition: Type of sample.
- Type: Code list
- Codes:
- surface = surface water
- pore = hyporheic porewater
- Missing values: None specified
SAMPLE_YEAR
- Label: Sample Year
- Definition: Year of sample collection.
- Type: Date/time
- Date format: YYYY
- Missing values: None specified
TRANSECT
- Label: Transect
- Definition: Alphanumeric code identifying longitudinal transect, numbered from upstream to downstream. Transect locations shifted among years as noted in the associated data table ‘VGPW_LOCATIONS’. T1 = Transect 1, and so on.
- Type: Nominal
- Missing values: None specified
SITE
- Label: Site
- Definition: Letter identifying the lateral location on the transect. Values for lateral porewater sites are A-D with A at the channel center and D the wetted margin. SW indicates surface water.
- Type: Nominal
- Missing values: None specified
DEPTH_CM
- Label: Sample depth
- Definition: For pore samples, indicates the depth of sampler intake below streambed surface, where 0 = surface water, 15 = 15 cm, and 30 = 30 cm.
- Type: Physical quantity
- Unit: centimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
N_NO3_MGL
- Label: Nitrate concentration
- Definition: Concentration of nitrogen as nitrate + nitrite in milligrams of nitrogen per liter.
- Type: Physical quantity
- Unit: milligramsPerLiter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
N_NO3_COMMENTS
- Label: Nitrate Concentration Comments
- Definition: Comments regarding nitrate concentrations, where ND = not detected and NM = not measured.
- Type: Nominal
- Missing values: None specified
N_NH4_MGL
- Label: Ammonium concentration
- Definition: Concentration of nitrogen as ammonium in milligrams of nitrogen per liter.
- Type: Physical quantity
- Unit: milligramsPerLiter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
N_NH4_COMMENTS
- Label: Ammonium Concentration Comments
- Definition: Comments regarding ammonium concentrations, where ND = not detected and NM = not measured.
- Type: Nominal
- Missing values: None specified
SI_MGL
- Label: Dissolved silica concentration
- Definition: Dissolved silica concentration in milligrams of silica per liter.
- Type: Physical quantity
- Unit: milligramsPerLiter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
SI_COMMENTS
- Label: Dissolved Silica Concentration Comments
- Definition: Comments regarding dissolved silica concentrations, where ND = not detected and NM = not measured.
- Type: Nominal
- Missing values: None specified
DOC_MGL
- Label: Dissolved organic carbon
- Definition: Dissolved organic carbon concentration in milligrams of carbon per liter.
- Type: Physical quantity
- Unit: milligramsPerLiter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
DOC_COMMENTS
- Label: Comments regarding DOC
- Definition: Comments regarding dissolved organic carbon concentrations, where ND = not detected and NM = not measured.
- Type: Nominal
- Missing values: None specified
D18O_PERMIL
- Label: Oxygen-18 Isotope Ratio
- Definition: δ18O isotope ratio reported in reported in parts per thousand (per mil, ‰).
- Type: Physical quantity
- Unit: perMil
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
DD_PERMIL
- Label: Deuterium Isotope Ratio
- Definition: δD isotope ratio reported in reported in parts per thousand (per mil, ‰).
- Type: Physical quantity
- Unit: perMil
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
DEXCESS
- Label: Deuterium excess
- Definition: Deuterium excess as calculated by δD-8*δ18O.
- Type: Physical quantity
- Unit: perMil
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
ISOTOPE_COMMENTS
- Label: Comments regarding isotopes
- Definition: Comments regarding all isotope values, where ND = not detected and NM = not measured.
- Type: Nominal
- Missing values: None specified
SC_USCM
- Label: Specific conductivity
- Definition: Specific conductivity in microSiemens per centimeter.
- Type: Physical quantity
- Unit: microSiemensPerCentimeter
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values: None specified
SC_COMMENTS
- Label: Comments regarding specific conductivity
- Definition: Comments regarding specific conductivity, where ND = not detected and NM = not measured.
- Type: Nominal
- Missing values: None specified
INUNDATED
- Label: Inundation Code
- Definition: Identifies whether sampling location was inundated by surface water at time of sample collection. Surface water samples are noted with “Yes”.
- Type: Code list
- Codes:
- Yes = Inundated
- No = Not inundated
- Missing values: None specified
Date Range:
Saturday, January 20, 2018 to Saturday, January 25, 2020