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The US Department of Defense is responsible for providing the military forces needed to deter war and protect the security of the United States. This includes overseeing the Army, Navy, Marine Corps, and Air Force, as well as coordinating with other defense agencies and organizations. The Department of Defense also plays a critical role in developing military strategies, acquiring and maintaining weapons and equipment, and ensuring the readiness and effectiveness of the armed forces. The DoD's data strategy initiatives have led to the publication of multiple public APIs including the USACE Corps Water Management System API, Lock Performance Monitoring System, and the DoD open data portal.

4 APIs 0 Features
Federal GovernmentDefenseMilitaryWater ManagementWaterwaysOpen Data

APIs

USACE Corps Water Management System Data API

The USACE Corps Water Management System Data API (CDA) is a REST service providing programmatic access to USACE water management data including time series measurements, monitor...

USACE Lock Performance Monitoring System API

The USACE Lock Performance Monitoring System (LPMS) API provides data on inland waterway lock operations across the US Army Corps of Engineers lock system. Endpoints return XML ...

DoD Data Portal

The Department of Defense Data Portal features APIs enabling access to DoD open data across military branches, agencies, and programs. The portal surfaces selected APIs from the...

DoD Open Data Platform

The Department of Defense Open Data Platform (data.mil) provides access to unclassified DoD datasets and data services supporting defense research, policy analysis, and public a...

Collections

USACE Corps Water Management System Data API

OPEN

Pricing Plans

Us Department Of Defense Plans Pricing

3 plans

PLANS

Rate Limits

Us Department Of Defense Rate Limits

5 limits

RATE LIMITS

FinOps

Us Department Of Defense Finops

FINOPS

Semantic Vocabularies

Us Department Of Defense Context

22 classes · 2 properties

JSON-LD

API Governance Rules

US Department of Defense API Rules

10 rules · 2 errors 6 warnings 2 info

SPECTRAL

JSON Structure

Usace Cwms Timeseries Structure

0 properties

JSON STRUCTURE

Example Payloads

Usace Cwms Get Timeseries Example

3 fields

EXAMPLE

Resources

🔗
LinkedIn
LinkedIn

Sources

Raw ↑ 
opencollection: 1.0.0
info:
  name: USACE Corps Water Management System Data API
  version: latest
items:
- info:
    name: Time Series
    type: folder
  items:
  - info:
      name: Get Time Series Data
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/timeseries
      params:
      - name: office
        value: ''
        type: query
        description: USACE district office ID (e.g., CWMS, SWT, LRH)
      - name: name
        value: ''
        type: query
        description: Time series ID in format Location.Parameter.Type.Interval.Duration.Version
      - name: begin
        value: ''
        type: query
        description: Start of the time window (ISO 8601 or milliseconds since epoch)
      - name: end
        value: ''
        type: query
        description: End of the time window (ISO 8601 or milliseconds since epoch)
      - name: datum
        value: ''
        type: query
        description: Elevation datum for stage data (e.g., NAVD88, NGVD29)
      - name: unit
        value: ''
        type: query
        description: Unit of measure for the output (e.g., EN for English, SI for metric)
      - name: timezone
        value: ''
        type: query
        description: Timezone for date/time values in response
      - name: format
        value: ''
        type: query
        description: Response format
      - name: page-size
        value: ''
        type: query
        description: Number of values per page
      - name: page
        value: ''
        type: query
        description: Page cursor for pagination (from previous response)
    docs: Returns time series data for a specified location and parameter. Supports retrieval of streamflow, gage height,
      reservoir levels, temperature, and other continuous measurements. Results are paginated for large datasets.
- info:
    name: Catalog
    type: folder
  items:
  - info:
      name: Get Time Series Catalog
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/timeseries/catalog
      params:
      - name: office
        value: ''
        type: query
        description: Filter by USACE district office ID
      - name: timeseries-id-regex
        value: ''
        type: query
        description: Regular expression pattern to filter time series IDs
      - name: cursor
        value: ''
        type: query
        description: Pagination cursor from previous response
      - name: page-size
        value: ''
        type: query
        description: Number of entries per page
    docs: Returns a catalog of available time series identifiers.
  - info:
      name: Get Location Catalog
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/locations/catalog
      params:
      - name: office
        value: ''
        type: query
        description: Filter by USACE district office ID
      - name: cursor
        value: ''
        type: query
        description: Pagination cursor
      - name: page-size
        value: ''
        type: query
        description: Number of entries per page
    docs: Returns a searchable catalog of all available CWMS locations.
  - info:
      name: Get Parameters
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/parameters
    docs: Returns the list of CWMS parameters available for time series and location level queries (e.g., Stage, Flow, Elev,
      Temp-Water).
  - info:
      name: Get Units
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/units
    docs: Returns the list of measurement units available in the CWMS system.
  - info:
      name: Get States
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/states
    docs: Returns the list of US states recognized in the CWMS system.
  - info:
      name: Get Counties
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/counties
    docs: Returns the list of US counties with CWMS location data.
- info:
    name: Locations
    type: folder
  items:
  - info:
      name: Get Locations
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/locations
      params:
      - name: office
        value: ''
        type: query
        description: Filter by USACE district office ID
      - name: names
        value: ''
        type: query
        description: Pipe-separated list of location IDs to retrieve
      - name: unit
        value: ''
        type: query
        description: Unit system for coordinates (EN or SI)
      - name: datum
        value: ''
        type: query
        description: Elevation datum for location elevations
      - name: format
        value: ''
        type: query
        description: Response format
    docs: Returns a list of CWMS monitoring locations matching the specified criteria. Locations represent physical sites
      where measurements are taken or water management occurs.
  - info:
      name: Get Location Details
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/locations/:locationId
      params:
      - name: locationId
        value: ''
        type: path
        description: CWMS location identifier
      - name: office
        value: ''
        type: query
        description: USACE district office ID
      - name: unit
        value: ''
        type: query
        description: Unit system for coordinates
    docs: Returns details for a single CWMS monitoring location.
  - info:
      name: Get Basins
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/basins
      params:
      - name: office
        value: ''
        type: query
        description: USACE district office ID
    docs: Returns hydrologic basins defined in CWMS.
- info:
    name: Ratings
    type: folder
  items:
  - info:
      name: Get Rating Curves
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/ratings
      params:
      - name: office
        value: ''
        type: query
        description: USACE district office ID
      - name: rating-id-mask
        value: ''
        type: query
        description: Pattern mask to filter rating IDs
      - name: start
        value: ''
        type: query
        description: Start of the time window for effective ratings
      - name: end
        value: ''
        type: query
        description: End of the time window for effective ratings
      - name: method
        value: ''
        type: query
        description: Rating method (e.g., LINEAR, LOGARITHMIC)
      - name: format
        value: ''
        type: query
        description: Response format
    docs: Returns rating curves used to convert gage height (stage) measurements to discharge (streamflow) values. Rating
      curves are essential for computing streamflow from continuous stage measurements.
- info:
    name: Levels
    type: folder
  items:
  - info:
      name: Get Location Levels
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/levels
      params:
      - name: office
        value: ''
        type: query
        description: USACE district office ID
      - name: location-id
        value: ''
        type: query
        description: CWMS location identifier
      - name: parameter-id
        value: ''
        type: query
        description: Parameter identifier (e.g., Stage, Elev)
      - name: unit
        value: ''
        type: query
        description: Unit system for output values
      - name: begin
        value: ''
        type: query
        description: Start of time window
      - name: end
        value: ''
        type: query
        description: End of time window
    docs: Returns location level data including pool elevations, flood stages, and operational thresholds for CWMS monitoring
      locations.
  - info:
      name: Get Reservoir Pools
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/pools
      params:
      - name: office
        value: ''
        type: query
        description: USACE district office ID
      - name: project-id-mask
        value: ''
        type: query
        description: Pattern mask to filter project IDs
      - name: name-mask
        value: ''
        type: query
        description: Pattern mask to filter pool names
      - name: unit
        value: ''
        type: query
        description: Unit system for output values
    docs: Returns reservoir pool definitions including storage zones, flood control pools, and conservation pools for USACE
      projects.
- info:
    name: Offices
    type: folder
  items:
  - info:
      name: Get USACE Offices
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/offices
    docs: Returns a list of USACE district offices with their identifiers and information. Offices are used to scope data
      queries within the CWMS system.
- info:
    name: Projects
    type: folder
  items:
  - info:
      name: Get USACE Projects
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/projects
      params:
      - name: office
        value: ''
        type: query
        description: Filter by USACE district office ID
      - name: project-id-mask
        value: ''
        type: query
        description: Pattern mask to filter project IDs
    docs: Returns USACE projects such as reservoirs, navigation projects, and flood control structures with their operational
      parameters.
- info:
    name: Measurements
    type: folder
  items:
  - info:
      name: Get Field Measurements
      type: http
    http:
      method: GET
      url: https://cwms-data.usace.army.mil/cwms-data/api/latest/measurements
      params:
      - name: office
        value: ''
        type: query
        description: USACE district office ID
      - name: location-id
        value: ''
        type: query
        description: CWMS location identifier
      - name: unit-system
        value: ''
        type: query
        description: Unit system for output values (EN or SI)
      - name: begin
        value: ''
        type: query
        description: Start of time window
      - name: end
        value: ''
        type: query
        description: End of time window
    docs: Returns field measurement data collected at CWMS locations including streamflow discharge measurements used for
      rating curve development.
bundled: true