Latest 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
id string
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
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

latest-field-measurements.json Raw ↑
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api.waterdata.usgs.gov/ogcapi/v0/collections/latest-field-measurements/schema",
  "title": "Latest 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": {
    "id": {
      "type": "string",
      "title": "Id"
    },
    "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"
    },
    "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"
    }
  }
}

Work with this as data

Every JSON Schema here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for schemas

4 MCP tools reach this
  • find_json_schemasBrowse and filter every JSON Schema in the catalog.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools

Call it yourself

curl for this page
This JSON Schema
curl "https://apis.io/api/v1/json-schemas/latest-field-measurements"
All schemas
curl "https://apis.io/api/v1/json-schemas?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

A second provider on the same verified email joins the account you already have.