Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

Relevant datasets include:

  • drinking water quality

    • NMED (SDWIS - captures 1000+ PWS)

      • theoretically have the machine readable data availableper Mary/Jeff: a lot of spreadsheet not linked to SDWIS right now

      • SDWIS accessible online but not query-able per criteria (only viewable by well)

      • Connection between SDWIS and Drinking Water Watch (both EPA-driven) is somewhat locked under EPA set up

      • Drinking Water Watch: https://dww.water.net.env.nm.gov/NMDWW/

  • surface water quality

    • NMED regulates surface water quality under EPA (WQX)

      • https://www.epa.gov/waterdata/water-quality-data-wqx

      • 700 units assessed by NMED (for various criteria)

      • theoretically have the machine readable data available

      • considers many categories and criteria, such as cold water fisheries, direct contact, or agricultural water quality issues

    • USGS collects intermittent and continuous surface water quality for research (on NWIS)

    • NMBGMR collects intermittent surface water quality for research

    • Universities collect intermittent SWQ for research

    • NGOs collect SWQ

  • groundwater quality

    • NMED regulates protection of groundwater from discharges, i.e. Nancy McDuffy

      • mostly spreadsheets and some paper files

      • monitoring well data - as required for discharge permits (such as petroleum storage tanks, dairy farms, or landfills) * these data include measurements of water levels

    • NMBGMR collects groundwater quality for hydrogeologic research

      • SQL database, can be made machine readable (and is connected by Sensor Things? Jake Ross )

    • USGS collects groundwater quality for hydrogeologic research

  • produced water quality

    • not regulated right now by NMED, no state agency database

    • eventually PRRC/NMPWRC hope to be intaking some quality data for treated produced water (that’s used outside of O&G)

  • precip water quality

    • Occasionally collected for research purposes (NMBGMR)

Table 1: The STA data model definitions and example mappings to NM agency datasets

SensorThings Entity

Description

NMED Drinking Water Quality Monitoring

Metadata

Location

A unique coordinate or area on the surface of the earth

Street Address (possibly with associated latitude and longitude). (e.g. 3960 PRINCE ST) - geoCoding required

Thing

Some real-world entity with which one or more Sensors are associated

Sample Pt RT236I

Datastream

A collection of Observations about an ObservedProperty produced by a Sensor associated with a Thing

Sample Results

Datastream/observationType

The type of observation, codified in the Observations and Measurements data standard. Types include Categorical (defined text), Count (integer), Measurement (continuous number), Observation (free text), and TruthObservation (True/False)

Categorical or TruthObservation

multiDataStream if there are multiple analytes

Datastream/unitOfMeasurement

A three-item definition of the unit of measurement, including its name, symbol, and link to the definition (preferably to one provided in an established ontology such as http://unitsofmeasure.org/ucum.html or http://qudt.org/)

TCR Result (binary indicator: absence/presence)

ug/l (micrograms/liter; also = ppb), mg/l (also = ppm), nTu, deg C, %, us/cm (microSiemens/centimeter), “pH” (techically dimless), rads,

Sensor

The procedure used to provide a Datastream. Can be a particular data recording device model, or a defined procedure followed by a human observer. If applicable, a specific instance (e.g. a sensor model and serial number)

9223B-PA (https://www.standardmethods.org/doi/10.2105/SMWW.2882.194)

ObservedProperty

The raw or processed phenomenon (quantitative or qualitative) being measured for the Datastream. Preferably including a link to a definition provided by an established ontology or controlled vocabulary such as the ODM2 Controlled Vocabularies or http://qudt.org/)

Analyte (e.g. Coliform (TCR) (3100))

Turbidity

OPTIONAL: FeatureOfInterest

The real-world feature that the Observations are about. This may or many not be different from the Location where the Thing on which the Sensor is mounted. Can include a JSON-formatted point location or a polygon or collections thereof.

Public Water System (head office location or service area boundary) (e.g. Albuquerque Water System PWSID NM3510701)

Data

Observation

A single measurement value including the result, time values, and other metadata. Information on the ObservedProperty that was measured by what Sensor is provided by the Datastream these observations are in. Features of Interest are linked for each observation as well. Observations are linked to (collected in) Datastreams

Sample (e.g. 763391)

Observation/result

The actual measured value, with valid values defined in observationType and units defined in unitsOfMeasurement, both provided by Datastream

Sample Result (P (Positive/ Coliform found) A (Negative/ Coliform not found))

Observation/phenomenonTime

The date+time (or interval) in ISO 8601 format (YYYY-MM-DDT:HH:MM:SS-Z) when the observation occured

MP (Monitoring Period) (e.g. 01-01-2020 to 01-31-2020)

(might need to discuss this further to figure out value for entry; does coincide with entry within Drinking Water Watch)

OPTIONAL: Observation/resultTime

The date+time that the result was generated. May be the same as phenomenonTime

Date (e.g 01-06-2020)

(refers to sampling time, not time of lab analysis)

OPTIONAL: Observation/validTime

The date+time interval during which the Observation can be used (often used for provisional values that are replaced by QA/QC’d observations)

OPTIONAL: Observation/resultQuality

A description of the result Quality. Will vary according to agency practice. Can use ODM2 controlled vocabulary for data quality types as a guide.