Modernized USGS Water Data APIs providing real-time and historical water resource data including continuous sensor measurements, daily values, and water quality information from thousands of monitoring sites nationwide. Supports OGC API standards and STAC for geospatial data access.
components:
parameters:
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
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
bbox-crs-epsg:
description: Indicates the EPSG for the given bbox coordinates.
explode: false
in: query
name: bbox-crs
required: false
schema:
default: 4326
type: integer
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
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\n\
Example: time_series_id IN ('64ee32f5350a4ec4967435dcd2e364ea', '3e55d9c2d8a54bec9ca5e292b07d5a96')"
in: query
name: filter
required: false
schema:
type: string
filter-lang:
description: CQL language used (e.g., cql-text, cql-json)
in: query
name: filter-lang
required: false
schema:
enum:
- cql-text
- cql-json
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
limit:
description: The optional limit parameter limits the number of items that are
presented in the response document
explode: false
in: query
name: limit
required: false
schema:
default: 100
maximum: 10000
minimum: 1
type: integer
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
properties:
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:
type: string
type: array
style: form
resourceId:
description: Configuration resource identifier
in: path
name: resourceId
required: true
schema:
default: latest-continuous
type: string
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
statistic_id:
description: A code corresponding to the statistic an observation represents.
Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete
list of codes and their descriptions can be found at [https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html](https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html).
explode: false
in: query
name: statistic_id
required: false
schema:
description: A code corresponding to the statistic an observation represents.
Example codes include 00001 (max), 00002 (min), and 00003 (mean). A complete
list of codes and their descriptions can be found at [https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html](https://help.waterdata.usgs.gov/code/stat_cd_nm_query?stat_nm_cd=%25&fmt=html).
title: Statistic ID
type: string
style: form
time:
description: "The date an observation represents. You can query this field using\
\ date-times or intervals, adhering to RFC 3339, or using ISO 8601 duration\
\ objects. Intervals may be bounded or half-bounded (double-dots at start\
\ or end).\nExamples:\n\n - A date-time: \"2018-02-12T23:20:50Z\"\n - A\
\ bounded interval: \"2018-02-12T00:00:00Z/2018-03-18T12:31:12Z\"\n - Half-bounded\
\ intervals: \"2018-02-12T00:00:00Z/..\" or \"../2018-03-18T12:31:12Z\"\n\
\ - Duration objects: \"P1M\" for data from the past month or \"PT36H\" for\
\ the last 36 hours\n\nOnly features that have a `time` that intersects the\
\ value of datetime are selected. If a feature has multiple temporal properties,\
\ it is the decision of the server whether only a single temporal property\
\ is used to determine the extent or all relevant temporal properties.\n"
explode: false
in: query
name: time
required: false
schema:
description: "The date an observation represents. You can query this field\
\ using date-times or intervals, adhering to RFC 3339, or using ISO 8601\
\ duration objects. Intervals may be bounded or half-bounded (double-dots\
\ at start or end).\nExamples:\n\n - A date-time: \"2018-02-12T23:20:50Z\"\
\n - A bounded interval: \"2018-02-12T00:00:00Z/2018-03-18T12:31:12Z\"\n\
\ - Half-bounded intervals: \"2018-02-12T00:00:00Z/..\" or \"../2018-03-18T12:31:12Z\"\
\n - Duration objects: \"P1M\" for data from the past month or \"PT36H\"\
\ for the last 36 hours\n\nOnly features that have a `time` that intersects\
\ the value of datetime are selected. If a feature has multiple temporal\
\ properties, it is the decision of the server whether only a single temporal\
\ property is used to determine the extent or all relevant temporal properties.\n"
title: Time
type: string
style: form
vendorSpecificParameters:
description: Additional "free-form" parameters that are not explicitly defined
in: query
name: vendorSpecificParameters
schema:
additionalProperties: true
type: object
style: form
wda_sortby:
description: "Specifies a comma-separated list of property names by which the\
\ response shall be sorted. If the property name is preceded by a plus (+)\
\ sign it indicates an ascending sort for that property. If the property\
\ name is preceded by a minus (-) sign it indicates a descending sort for\
\ that property. If the property is not preceded by a plus or minus, then\
\ the default sort order implied is ascending (+). \n\nOnly a single page\
\ of data can be returned when specifying sortby. If you need more than a\
\ single page of data, don't specify a sortby value and sort the full data\
\ set after it's been downloaded."
explode: false
in: query
name: sortby
required: false
schema:
items:
pattern: '[+|-]?[A-Za-z_].*'
type: string
minItems: 1
type: array
style: form
responses:
'200':
description: successful operation
'204':
description: no content
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.
Queryables:
content:
application/json:
schema:
$ref: '#/components/schemas/queryables'
description: successful queryables operation
Tiles:
content:
application/json:
schema:
$ref: '#/components/schemas/tiles'
description: Retrieves the tiles description for this collection
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.
default:
content:
application/json:
schema:
$ref: https://schemas.opengis.net/ogcapi/processes/part1/1.0/openapi/schemas/exception.yaml
description: Unexpected error
schemas:
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
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
queryables:
properties:
queryables:
items:
$ref: '#/components/schemas/queryable'
type: array
required:
- queryables
type: object
tilematrixsetlink:
properties:
tileMatrixSet:
type: string
tileMatrixSetURI:
type: string
required:
- tileMatrixSet
type: object
tiles:
properties:
links:
items:
$ref: https://schemas.opengis.net/ogcapi/tiles/part1/1.0/openapi/ogcapi-tiles-1.yaml#/components/schemas/link
type: array
tileMatrixSetLinks:
items:
$ref: '#/components/schemas/tilematrixsetlink'
type: array
required:
- tileMatrixSetLinks
- links
type: object
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
info:
contact:
name: US Geological Survey - Water Data for the Nation
url: https://waterdata.usgs.gov
x-ogc-serviceContact:
addresses: []
emails:
- value: [email protected]
hoursOfService: pointOfContact
links:
- href: https://waterdata.usgs.gov/questions-comments/?referrerUrl=https://api.waterdata.usgs.gov
type: text/html
name: WDFN Support
description: 'These APIs provide OGC-compliant interfaces to USGS water data, letting
you download continuous sensor measurements, discrete field measurements, metadata
about monitoring locations, and more.
'
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 OGC APIs
version: 0.56.0
x-keywords:
- geospatial
- data
- api
- hydrology
- USGS
openapi: 3.0.2
paths:
/:
get:
description: Landing page
operationId: getLandingPage
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/LandingPage
'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
summary: Landing page
tags:
- server
/collections:
get:
description: Collections
operationId: getCollections
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/LandingPage
'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
summary: Collections
tags:
- server
/collections/agency-codes:
get:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: describeAgency-codesCollection
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 Agency codes metadata
tags:
- agency-codes
/collections/agency-codes/items:
get:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: getAgency-codesFeatures
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
- agency_name
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: Agency code identification number.
explode: false
in: query
name: id
required: false
schema:
description: Agency code identification number.
type: string
style: form
- description: Agency name.
explode: false
in: query
name: agency_name
required: false
schema:
description: Agency name.
type: string
style: form
- $ref: '#/components/parameters/filter'
responses:
'200':
$ref: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/Features
'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 Agency codes items
tags:
- agency-codes
options:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: optionsAgency-codesFeatures
responses:
'200':
description: options response
security:
- ApiKeyQuery: []
- ApiKeyHeader: []
summary: Options for Agency codes items
tags:
- agency-codes
post:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: getCQL2Agency-codesFeatures
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: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/Features
'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 Agency codes items with CQL2
tags:
- agency-codes
/collections/agency-codes/items/{featureId}:
get:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: getAgency-codesFeature
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: https://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/ogcapi-features-1.yaml#/components/responses/Feature
'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 Agency codes item by id
tags:
- agency-codes
options:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: optionsAgency-codesFeature
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 Agency codes item by id
tags:
- agency-codes
/collections/agency-codes/queryables:
get:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: getAgency-codesQueryables
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
- agency_name
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 Agency codes queryables
tags:
- agency-codes
/collections/agency-codes/schema:
get:
description: 'Code identifying the agency or organization used for site information,
data sources, and permitting agencies. Agency codes are fixed values assigned
by the National Water Information System (NWIS).
'
operationId: getAgency-codesSchema
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 Agency codes schema
tags:
- agency-codes
/collections/altitude-datums:
get:
description: 'The recommended vertical datum is NAVD88 (North American Vertical
Datum of 1988) where applicable as stated in Office of Information Technical
Memo 2002.01. NGVD29 (National Geodetic Vertical Datum of 1929) and NAVD88
are the only datums that can be converted on output. NWIS uses the North American
Vertical Datum Conversions (VERTCON) of the National Geodetic Survey to convert
from NGVD29 to NAVD88 or vice versa. Conversions to or from other vertical
datums are not available.
'
operationId: describeAltitude-datumsCollection
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/
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# Full source: https://raw.githubusercontent.com/api-evangelist/doi/refs/heads/main/openapi/doi-usgs-water-openapi.yml