EMP: EMP water quality data
In sbashevkin/discretewq: Integrated Dataset of Discrete Water Quality in the San Francisco Estuary
EMP R Documentation
EMP water quality data
Description
Water quality data from the California Department of Water Resources Environmental Monitoring Program.
Usage
EMP
Format
a tibble with 17,366 rows and 68 variables
- Source
Name of the source dataset.
- Station
Station where sample was collected.
- Latitude
Latitude in decimal degrees.
- Longitude
Longitude in decimal degrees.
- Field_coords
Were lat/long coordinates collected in the field (TRUE), or do they represent the location of a fixed station (FALSE)?
- Date
Date sample was collected.
- Datetime
Date and time sample was collected.
- Notes
Notes or comments.
- Depth
Bottom depth (m).
- Tide
Tidal stage (always High Slack).
- Microcystis
Microcystis bloom intensity on a qualitative scale from 1 to 5 where 1 = absent, 2 = low, 3 = medium, 4 = high, and 5 = very high.
- Chlorophyll_Sign
Whether the Chlorophyll value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- Chlorophyll
Chlorophyll concentration (\mug L-1).
- Secchi
Secchi depth (cm).
- Temperature
Temperature (°C) at surface.
- Temperature_bottom
Temperature (°C) at bottom.
- Conductivity
Specific conductance (\muS cm-1) at surface.
- Conductivity_bottom
Specific conductance (\muS cm-1) at bottom.
- DissolvedOxygen
Dissolved oxygen (mg/L) at surface.
- DissolvedOxygen_bottom
Dissolved oxygen (mg/L) at bottom.
- DissolvedOxygenPercent
Dissolved oxygen percent (dimensionless) at surface.
- DissolvedOxygenPercent_bottom
Dissolved oxygen percent (dimensionless) at bottom.
- pH
pH (dimensionless) at surface.
- pH_bottom
pH (dimensionless) at bottom.
- TurbidityNTU
Turbidity (NTU) at surface.
- TurbidityNTU_bottom
Turbidity (NTU) at bottom.
- TurbidityFNU
Turbidity (FNU) at surface.
- TurbidityFNU_bottom
Turbidity (FNU) at bottom.
- Pheophytin_Sign
Whether the Pheophytin value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- Pheophytin
Pheophytin concentration (\mug L-1).
- TotAlkalinity_Sign
Whether the Total Alkalinity value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotAlkalinity
Total Alkalinity (mg/L).
- TotAmmonia_Sign
Whether the Total Ammonia value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotAmmonia
Total Ammonia (mg/L).
- DissAmmonia_Sign
Whether the Dissolved Ammonia value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissAmmonia
Dissolved Ammonia (mg/L). If DissAmmonia_Sign is <, this is equal to the reporting limit, NA = RL unknown.
- DissBromide_Sign
Whether the Dissolved Bromide value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissBromide
Dissolved bromide (mg/L).
- DissCalcium_Sign
Whether the Dissolved Calcium value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissCalcium
Dissolved calcium (mg/L).
- TotChloride_Sign
Whether the Total Chloride value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotChloride
Total chloride (mg/L).
- DissChloride_Sign
Whether the Dissolved Chloride value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissChloride
Dissolved chloride (mg/L).
- DissNitrateNitrite_Sign
Whether the Dissolved Nitrate Nitrite value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissNitrateNitrite
Dissolved Nitrate and Nitrite (mg/L). If DissNitrateNitrite_Sign is <, this is equal to the reporting limit, with NA = RL unknown.
- DOC_Sign
Whether the DOC value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DOC
Dissolved organic carbon (mg/L).
- TOC_Sign
Whether the TOC value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TOC
Total Organic Carbon (mg/L).
- DON_Sign
Whether the DON value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DON
Dissolved Organic Nitrogen (mg/L).
- TON_Sign
Whether the Total Organic Nitrogen value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TON
Total Organic Nitrogen (mg/L).
- DissOrthophos_Sign
Whether the Dissolved Ortho-phosphate value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissOrthophos
Dissolved Ortho-phosphate (mg/L). If DissOrthophos_Sign is <, this is equal to the reporting limit, with NA = RL unknown.
- TotPhos_Sign
Whether the Total Phosphate value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotPhos
Total phosphorous (mg/L).
- DissSilica_Sign
Whether the Dissolved Silica value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissSilica
Dissolved silica (mg/L).
- TDS_Sign
Whether the Total Dissolved Solids value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TDS
Total Dissolved Solids (mg/L).
- TSS_Sign
Whether the TSS value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TSS
Total Suspended Solids (mg/L).
- VSS_Sign
Whether the VSS value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- VSS
Volatile Suspended Solids (mg/L).
- TKN_Sign
Whether the TKN value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TKN
Total Kjeldahl Nitrogen (mg/L).
Details
More metadata and information on methods are available here.
See Also
wq; for more information on _Sign variables: sign_variables
sbashevkin/discretewq documentation built on July 16, 2025, 6:16 p.m.
R Package Documentation
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| EMP | R Documentation |
EMP water quality data
Description
Water quality data from the California Department of Water Resources Environmental Monitoring Program.
Usage
EMP
Format
a tibble with 17,366 rows and 68 variables
- Source
Name of the source dataset.
- Station
Station where sample was collected.
- Latitude
Latitude in decimal degrees.
- Longitude
Longitude in decimal degrees.
- Field_coords
Were lat/long coordinates collected in the field (TRUE), or do they represent the location of a fixed station (FALSE)?
- Date
Date sample was collected.
- Datetime
Date and time sample was collected.
- Notes
Notes or comments.
- Depth
Bottom depth (m).
- Tide
Tidal stage (always High Slack).
- Microcystis
Microcystis bloom intensity on a qualitative scale from 1 to 5 where 1 = absent, 2 = low, 3 = medium, 4 = high, and 5 = very high.
- Chlorophyll_Sign
Whether the Chlorophyll value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- Chlorophyll
Chlorophyll concentration (
\mug L-1).- Secchi
Secchi depth (cm).
- Temperature
Temperature (°C) at surface.
- Temperature_bottom
Temperature (°C) at bottom.
- Conductivity
Specific conductance (
\muS cm-1) at surface.- Conductivity_bottom
Specific conductance (
\muS cm-1) at bottom.- DissolvedOxygen
Dissolved oxygen (mg/L) at surface.
- DissolvedOxygen_bottom
Dissolved oxygen (mg/L) at bottom.
- DissolvedOxygenPercent
Dissolved oxygen percent (dimensionless) at surface.
- DissolvedOxygenPercent_bottom
Dissolved oxygen percent (dimensionless) at bottom.
- pH
pH (dimensionless) at surface.
- pH_bottom
pH (dimensionless) at bottom.
- TurbidityNTU
Turbidity (NTU) at surface.
- TurbidityNTU_bottom
Turbidity (NTU) at bottom.
- TurbidityFNU
Turbidity (FNU) at surface.
- TurbidityFNU_bottom
Turbidity (FNU) at bottom.
- Pheophytin_Sign
Whether the Pheophytin value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- Pheophytin
Pheophytin concentration (
\mug L-1).- TotAlkalinity_Sign
Whether the Total Alkalinity value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotAlkalinity
Total Alkalinity (mg/L).
- TotAmmonia_Sign
Whether the Total Ammonia value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotAmmonia
Total Ammonia (mg/L).
- DissAmmonia_Sign
Whether the Dissolved Ammonia value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissAmmonia
Dissolved Ammonia (mg/L). If DissAmmonia_Sign is <, this is equal to the reporting limit, NA = RL unknown.
- DissBromide_Sign
Whether the Dissolved Bromide value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissBromide
Dissolved bromide (mg/L).
- DissCalcium_Sign
Whether the Dissolved Calcium value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissCalcium
Dissolved calcium (mg/L).
- TotChloride_Sign
Whether the Total Chloride value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotChloride
Total chloride (mg/L).
- DissChloride_Sign
Whether the Dissolved Chloride value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissChloride
Dissolved chloride (mg/L).
- DissNitrateNitrite_Sign
Whether the Dissolved Nitrate Nitrite value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissNitrateNitrite
Dissolved Nitrate and Nitrite (mg/L). If DissNitrateNitrite_Sign is <, this is equal to the reporting limit, with NA = RL unknown.
- DOC_Sign
Whether the DOC value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DOC
Dissolved organic carbon (mg/L).
- TOC_Sign
Whether the TOC value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TOC
Total Organic Carbon (mg/L).
- DON_Sign
Whether the DON value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DON
Dissolved Organic Nitrogen (mg/L).
- TON_Sign
Whether the Total Organic Nitrogen value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TON
Total Organic Nitrogen (mg/L).
- DissOrthophos_Sign
Whether the Dissolved Ortho-phosphate value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissOrthophos
Dissolved Ortho-phosphate (mg/L). If DissOrthophos_Sign is <, this is equal to the reporting limit, with NA = RL unknown.
- TotPhos_Sign
Whether the Total Phosphate value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TotPhos
Total phosphorous (mg/L).
- DissSilica_Sign
Whether the Dissolved Silica value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- DissSilica
Dissolved silica (mg/L).
- TDS_Sign
Whether the Total Dissolved Solids value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TDS
Total Dissolved Solids (mg/L).
- TSS_Sign
Whether the TSS value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TSS
Total Suspended Solids (mg/L).
- VSS_Sign
Whether the VSS value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- VSS
Volatile Suspended Solids (mg/L).
- TKN_Sign
Whether the TKN value is lower than reported ("<" because it is below the reporting limit and the reporting limit is used as the value), or reported as the measured value "=".
- TKN
Total Kjeldahl Nitrogen (mg/L).
Details
More metadata and information on methods are available here.
See Also
wq; for more information on _Sign variables: sign_variables
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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