USGS Water Services · Schema

Field Measurements

Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.

WaterStreamflowGroundwaterWater QualityHydrologyEnvironmentalUSGSNWISGovernmentOpen DataOGC

Properties

Name	Type	Description
field_measurements_series_id	string
field_visit_id	string
parameter_code	string
monitoring_location_id	string
observing_procedure_code	string
observing_procedure	string
value	string
unit_of_measure	string
time	string
qualifier	string
vertical_datum	string
approval_status	string
measuring_agency	string
reading_type	string
last_modified	string
control_condition	string
measurement_rated	string
year	string
month	string
day	string
time_of_day	string

View JSON Schema on GitHub

JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api.waterdata.usgs.gov/ogcapi/v0/collections/field-measurements/schema",
  "title": "Field Measurements",
  "description": "Field measurements are physically measured values collected during a visit to the monitoring location. Field measurements consist of measurements of gage height and discharge, and readings of groundwater levels, and are primarily used as calibration readings for the automated sensors collecting continuous data. They are collected at a low frequency, and delivery of the data in WDFN may be delayed due to data processing time.",
  "type": "object",
  "properties": {
    "field_measurements_series_id": {
      "type": "string",
      "title": "Field Measurements Series Id"
    },
    "field_visit_id": {
      "type": "string",
      "title": "Field Visit Id"
    },
    "parameter_code": {
      "type": "string",
      "title": "Parameter Code"
    },
    "monitoring_location_id": {
      "type": "string",
      "title": "Monitoring Location Id"
    },
    "observing_procedure_code": {
      "type": "string",
      "title": "Observing Procedure Code"
    },
    "observing_procedure": {
      "type": "string",
      "title": "Observing Procedure"
    },
    "value": {
      "type": "string",
      "title": "Value"
    },
    "unit_of_measure": {
      "type": "string",
      "title": "Unit Of Measure"
    },
    "time": {
      "type": "string",
      "title": "Time"
    },
    "qualifier": {
      "type": "string",
      "title": "Qualifier"
    },
    "vertical_datum": {
      "type": "string",
      "title": "Vertical Datum"
    },
    "approval_status": {
      "type": "string",
      "title": "Approval Status"
    },
    "measuring_agency": {
      "type": "string",
      "title": "Measuring Agency"
    },
    "reading_type": {
      "type": "string",
      "title": "Reading Type"
    },
    "last_modified": {
      "type": "string",
      "title": "Last Modified"
    },
    "control_condition": {
      "type": "string",
      "title": "Control Condition"
    },
    "measurement_rated": {
      "type": "string",
      "title": "Measurement Rated"
    },
    "year": {
      "type": "string",
      "title": "Year"
    },
    "month": {
      "type": "string",
      "title": "Month"
    },
    "day": {
      "type": "string",
      "title": "Day"
    },
    "time_of_day": {
      "type": "string",
      "title": "Time Of Day"
    }
  }
}