openapi: 3.2.0
info:
  contact:
    name: US Geological Survey - Water Data for the Nation
    url: https://waterdata.usgs.gov
    x-ogc-serviceContact:
      addresses: []
      emails:
      - value: wdfn@usgs.gov
      hoursOfService: pointOfContact
      links:
      - href: https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov
        type: text/html
      name: WDFN Support
  description: 'The United States Geological Survey (USGS) collects water data at monitoring locations across the United States using both automated sensors and manual data collection. These APIs provide access to that data, alongside metadata about data collections and monitoring locations, in standardized machine-readable formats.

    '
  license:
    name: US Government work in the public domain
    url: https://creativecommons.org/publicdomain/zero/1.0/
  termsOfService: https://creativecommons.org/publicdomain/zero/1.0/
  title: USGS Water Data Citations API
  version: 0.71.7
  x-keywords:
  - geospatial
  - data
  - api
  - hydrology
  - USGS
servers:
- description: 'The United States Geological Survey (USGS) collects water data at monitoring locations across the United States using both automated sensors and manual data collection. These APIs provide access to that data, alongside metadata about data collections and monitoring locations, in standardized machine-readable formats.

    '
  url: https://api.waterdata.usgs.gov/ogcapi/v0
tags:
- description: 'Citations associated with water measurement methods.

    '
  name: citations
paths:
  /collections/citations:
    get:
      description: 'Citations associated with water measurement methods.

        '
      operationId: describeCitationsCollection
      parameters:
      - $ref: '#/components/parameters/f'
      - $ref: '#/components/parameters/lang'
      responses:
        '200':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/Collection
        '400':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/InvalidParameter
        '403':
          $ref: '#/components/responses/Forbidden403'
        '404':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/NotFound
        '429':
          $ref: '#/components/responses/TooManyRequests429'
        '500':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/ServerError
      summary: Get Citations metadata
      tags:
      - citations
  /collections/citations/items:
    get:
      description: 'Citations associated with water measurement methods.

        '
      operationId: getCitationsFeatures
      parameters:
      - description: The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.
        explode: false
        in: query
        name: f
        required: false
        schema:
          default: json
          enum:
          - json
          - html
          - jsonld
          - csv
          type: string
        style: form
      - $ref: '#/components/parameters/lang'
      - $ref: '#/components/parameters/bbox'
      - description: The optional limit parameter limits the number of items that are presented in the response document (maximum=50000, default=10000).
        explode: false
        in: query
        name: limit
        required: false
        schema:
          default: 10000
          maximum: 50000
          minimum: 1
          type: integer
        style: form
      - $ref: '#/components/parameters/crs'
      - $ref: '#/components/parameters/bbox-crs'
      - description: The properties that should be included. The parameter value is a comma-separated list of property names.
        explode: false
        in: query
        name: properties
        required: false
        schema:
          items:
            enum:
            - id
            - citation_description
            type: string
          type: array
        style: form
      - $ref: '#/components/parameters/skipGeometry'
      - $ref: https://raw.githubusercontent.com/opengeospatial/ogcapi-records/master/core/openapi/parameters/sortby.yaml
      - $ref: '#/components/parameters/offset'
      - description: Method citation name. An abbreviated citation that describes the reference.
        explode: false
        in: query
        name: id
        required: false
        schema:
          description: Method citation name. An abbreviated citation that describes the reference.
          type: string
        style: form
      - description: Method citation description.
        explode: false
        in: query
        name: citation_description
        required: false
        schema:
          description: Method citation description.
          type: string
        style: form
      - $ref: '#/components/parameters/filter'
      responses:
        '200':
          $ref: '#/components/responses/CitationsFeatures'
        '400':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/InvalidParameter
        '403':
          $ref: '#/components/responses/Forbidden403'
        '404':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/NotFound
        '429':
          $ref: '#/components/responses/TooManyRequests429'
        '500':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/ServerError
      security:
      - ApiKeyQuery: []
      - ApiKeyHeader: []
      summary: Get Citations items
      tags:
      - citations
    options:
      description: 'Citations associated with water measurement methods.

        '
      operationId: optionsCitationsFeatures
      responses:
        '200':
          description: options response
      security:
      - ApiKeyQuery: []
      - ApiKeyHeader: []
      summary: Options for Citations items
      tags:
      - citations
    post:
      description: 'Citations associated with water measurement methods.

        '
      operationId: getCQL2CitationsFeatures
      requestBody:
        content:
          application/json:
            schema:
              $ref: https://schemas.opengis.net/cql2/1.0/cql2.json
        description: Get items with CQL2
        required: true
      responses:
        '200':
          $ref: '#/components/responses/CitationsFeatures'
        '400':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/InvalidParameter
        '403':
          $ref: '#/components/responses/Forbidden403'
        '429':
          $ref: '#/components/responses/TooManyRequests429'
        '500':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/ServerError
      security:
      - ApiKeyQuery: []
      - ApiKeyHeader: []
      summary: Get Citations items with CQL2
      tags:
      - citations
  /collections/citations/items/{featureId}:
    get:
      description: 'Citations associated with water measurement methods.

        '
      operationId: getCitationsFeature
      parameters:
      - $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/parameters/featureId
      - $ref: '#/components/parameters/crs'
      - $ref: '#/components/parameters/f'
      - $ref: '#/components/parameters/lang'
      responses:
        '200':
          $ref: '#/components/responses/CitationsFeature'
        '400':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/InvalidParameter
        '403':
          $ref: '#/components/responses/Forbidden403'
        '404':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/NotFound
        '429':
          $ref: '#/components/responses/TooManyRequests429'
        '500':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/ServerError
      security:
      - ApiKeyQuery: []
      - ApiKeyHeader: []
      summary: Get Citations item by id
      tags:
      - citations
    options:
      description: 'Citations associated with water measurement methods.

        '
      operationId: optionsCitationsFeature
      parameters:
      - $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/parameters/featureId
      responses:
        '200':
          description: options response
      security:
      - ApiKeyQuery: []
      - ApiKeyHeader: []
      summary: Options for Citations item by id
      tags:
      - citations
  /collections/citations/queryables:
    get:
      description: 'Citations associated with water measurement methods.

        '
      operationId: getCitationsQueryables
      parameters:
      - description: The properties that should be included. The parameter value is a comma-separated list of property names.
        explode: false
        in: query
        name: properties
        required: false
        schema:
          items:
            enum:
            - id
            - citation_description
            type: string
          type: array
        style: form
      - $ref: '#/components/parameters/f'
      - description: The profile to be applied to a given request
        explode: false
        in: query
        name: profile
        required: false
        schema:
          enum:
          - actual-domain
          - valid-domain
          type: string
        style: form
      - $ref: '#/components/parameters/lang'
      responses:
        '200':
          $ref: '#/components/responses/Queryables'
        '400':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/InvalidParameter
        '403':
          $ref: '#/components/responses/Forbidden403'
        '404':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/NotFound
        '429':
          $ref: '#/components/responses/TooManyRequests429'
        '500':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/ServerError
      security:
      - ApiKeyQuery: []
      - ApiKeyHeader: []
      summary: Get Citations queryables
      tags:
      - citations
  /collections/citations/schema:
    get:
      description: 'Citations associated with water measurement methods.

        '
      operationId: getCitationsSchema
      parameters:
      - $ref: '#/components/parameters/f'
      - $ref: '#/components/parameters/lang'
      responses:
        '200':
          $ref: '#/components/responses/Queryables'
        '400':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/InvalidParameter
        '403':
          $ref: '#/components/responses/Forbidden403'
        '404':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/NotFound
        '429':
          $ref: '#/components/responses/TooManyRequests429'
        '500':
          $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/ServerError
      security:
      - ApiKeyQuery: []
      - ApiKeyHeader: []
      summary: Get Citations schema
      tags:
      - citations
components:
  schemas:
    CitationsFeatureCollection:
      properties:
        features:
          items:
            $ref: '#/components/schemas/CitationsFeature'
          type: array
        links:
          items:
            $ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/schemas/link
          type: array
        numberReturned:
          minimum: 0
          type: integer
        timeStamp:
          format: date-time
          type: string
        type:
          enum:
          - FeatureCollection
          type: string
      required:
      - type
      - features
      type: object
    queryables:
      properties:
        queryables:
          items:
            $ref: '#/components/schemas/queryable'
          type: array
      required:
      - queryables
      type: object
    queryable:
      properties:
        description:
          description: a human-readable narrative describing the queryable
          type: string
        language:
          default: en
          description: the language used for the title and description
          type: string
        queryable:
          description: the token that may be used in a CQL predicate
          type: string
        title:
          description: a human readable title for the queryable
          type: string
        type:
          description: the data type of the queryable
          type: string
        type-ref:
          description: a reference to the formal definition of the type
          format: url
          type: string
      required:
      - queryable
      - type
      type: object
    CitationsFeature:
      properties:
        geometry: {}
        id:
          type: string
        properties:
          properties:
            citation_description:
              description: Method citation description.
              type:
              - string
              - 'null'
            id:
              description: Method citation name. An abbreviated citation that describes the reference.
              type:
              - string
              - 'null'
          type: object
        type:
          enum:
          - Feature
          type: string
      required:
      - type
      - properties
      type: object
    Error:
      properties:
        error:
          properties:
            code:
              description: Error code such as OVER_RATE_LIMIT, see https://api.data.gov/docs/developer-manual/#general-web-service-errors
              type: string
            message:
              description: Error message
              type: string
          required:
          - code
          - message
          type: object
      type: object
  responses:
    Queryables:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/queryables'
      description: successful queryables operation
    CitationsFeature:
      content:
        application/geo+json:
          example:
            geometry: null
            id: ALSC SOPs, 2015
            properties:
              citation_description: 'Adirondack Lakes Survey Corporation, 2015, Standard operating procedures, laboratory, as of December 1, 2015: Ray Brook, New York, Adirondack Lakes Survey Corporation, 72 p.'
              id: ALSC SOPs, 2015
            type: Feature
          schema:
            $ref: '#/components/schemas/CitationsFeature'
        text/html:
          schema:
            type: string
      description: A single feature from Citations.
    Forbidden403:
      content:
        application/json:
          examples:
            missingApiKey:
              summary: Missing API Key
              value:
                error:
                  code: API_KEY_MISSING
                  message: No api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/
          schema:
            $ref: '#/components/schemas/Error'
        application/xml:
          example: "<response>\n      <error>\n        <code>API_KEY_MISSING</code>\n        <message>No api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/</message>\n      </error>\n    </response>"
          schema:
            properties:
              response:
                properties:
                  error:
                    properties:
                      code:
                        type: string
                      message:
                        type: string
                    required:
                    - code
                    - message
                    type: object
                required:
                - error
                type: object
            type: object
        text/csv:
          examples:
            missingApiKeyCsv:
              summary: Missing API Key (CSV)
              value: 'Error Code,Error Message

                API_KEY_MISSING, No api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/'
          schema:
            type: string
        text/html:
          examples:
            missingApiKeyHtml:
              summary: Missing API Key (HTML)
              value: "<html>\n      <body>\n        <h1>API_KEY_MISSING</h1>\n        <p>No api_key was supplied. Get one at https://api.waterdata.usgs.gov/signup/</p>\n      </body>\n    </html>"
          schema:
            type: string
      description: Forbidden - API key is missing or not authorized for this resource.
    CitationsFeatures:
      content:
        application/geo+json:
          example:
            features:
            - geometry: null
              id: ALSC SOPs, 2015
              properties:
                citation_description: 'Adirondack Lakes Survey Corporation, 2015, Standard operating procedures, laboratory, as of December 1, 2015: Ray Brook, New York, Adirondack Lakes Survey Corporation, 72 p.'
                id: ALSC SOPs, 2015
              type: Feature
            links:
            - href: https://api.waterdata.usgs.gov/ogcapi/v0/collections/citations/items
              rel: self
              title: This document as GeoJSON
              type: application/geo+json
            numberReturned: 1
            timeStamp: '2024-07-21T12:00:00Z'
            type: FeatureCollection
          schema:
            $ref: '#/components/schemas/CitationsFeatureCollection'
        text/html:
          schema:
            type: string
      description: A feature collection of Citations.
    TooManyRequests429:
      content:
        application/json:
          examples:
            rateLimitExceeded:
              summary: Rate Limit Exceeded
              value:
                error:
                  code: OVER_RATE_LIMIT
                  message: You have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.
          schema:
            $ref: '#/components/schemas/Error'
        application/xml:
          example: "<response>\n      <error>\n        <code>OVER_RATE_LIMIT</code>\n        <message>You have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.</message>\n      </error>\n    </response>"
          schema:
            properties:
              response:
                properties:
                  error:
                    properties:
                      code:
                        type: string
                      message:
                        type: string
                    required:
                    - code
                    - message
                    type: object
                required:
                - error
                type: object
            type: object
        text/csv:
          examples:
            rateLimitCsv:
              summary: Rate Limit Exceeded (CSV)
              value: 'Error Code,Error Message

                OVER_RATE_LIMIT,You have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.'
          schema:
            type: string
        text/html:
          examples:
            rateLimitHtml:
              summary: Rate Limit Exceeded (HTML)
              value: "<html>\n      <body>\n        <h1>OVER_RATE_LIMIT</h1>\n        <p>You have exceeded your rate limit. Make sure you provided your API key from https://api.waterdata.usgs.gov/signup/, then either try again later or contact us at https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov for assistance.</p>\n      </body>\n    </html>"
          schema:
            type: string
      description: Too Many Requests - Rate limit exceeded.
  parameters:
    bbox-crs:
      description: Indicates the coordinate reference system for the given bbox coordinates.
      explode: false
      in: query
      name: bbox-crs
      required: false
      schema:
        format: uri
        type: string
      style: form
    skipGeometry:
      description: This option can be used to skip response geometries for each feature.
      explode: false
      in: query
      name: skipGeometry
      required: false
      schema:
        default: false
        type: boolean
      style: form
    offset:
      description: The optional offset parameter indicates the index within the result set from which the server shall begin presenting results in the response document.  The first element has an index of 0 (default).
      explode: false
      in: query
      name: offset
      required: false
      schema:
        default: 0
        minimum: 0
        type: integer
      style: form
    filter:
      description: "CQL Text filter expression.  CQL JSON cannot be used here, only in the body. \nSee also: https://docs.pygeoapi.io/en/latest/cql.html \n\nExample: time_series_id IN ('64ee32f5350a4ec4967435dcd2e364ea', '3e55d9c2d8a54bec9ca5e292b07d5a96')"
      in: query
      name: filter
      required: false
      schema:
        type: string
    lang:
      description: The optional lang parameter instructs the server return a response in a certain language, if supported.  If the language is not among the available values, the Accept-Language header language will be used if it is supported. If the header is missing, the default server language is used. Note that providers may only support a single language (or often no language at all), that can be different from the server language.  Language strings can be written in a complex (e.g. "fr-CA,fr;q=0.9,en-US;q=0.8,en;q=0.7"), simple (e.g. "de") or locale-like (e.g. "de-CH" or "fr_BE") fashion.
      in: query
      name: lang
      required: false
      schema:
        default: en-US
        enum:
        - en-US
        type: string
    bbox:
      description: Only features that have a geometry that intersects the bounding box are selected.The bounding box is provided as four or six numbers, depending on whether the coordinate reference system includes a vertical axis (height or depth).
      explode: false
      in: query
      name: bbox
      required: false
      schema:
        items:
          type: number
        maxItems: 6
        minItems: 4
        type: array
      style: form
    crs:
      description: Indicates the coordinate reference system for the results.
      explode: false
      in: query
      name: crs
      required: false
      schema:
        format: uri
        type: string
      style: form
    f:
      description: The optional f parameter indicates the output format which the server shall provide as part of the response document.  The default format is GeoJSON.  CSV is also available.
      explode: false
      in: query
      name: f
      required: false
      schema:
        default: json
        enum:
        - json
        - html
        - jsonld
        - csv
        type: string
      style: form
  securitySchemes:
    ApiKeyHeader:
      description: Providing your API key gives you higher rate limits when querying our APIs. You can obtain an API key at https://api.waterdata.usgs.gov/signup
      in: header
      name: api_key
      type: apiKey
    ApiKeyQuery:
      description: Providing your API key gives you higher rate limits when querying our APIs. You can obtain an API key at https://api.waterdata.usgs.gov/signup
      in: query
      name: api_key
      type: apiKey