How do I get a free USGS Water API key?

USGS Water does not require an API key (Zero-Auth). You can call the endpoints directly with cURL, Fetch, or Python without creating an account or providing authorization tokens.

What is the rate limit for USGS Water API?

USGS Water provides a free tier rate limit of: Unlimited. For high-throughput production requirements beyond this allowance, refer to their official documentation.

Can I use USGS Water in commercial projects?

Most free endpoints permit commercial or prototyping use within fair use terms. Please inspect official provider docs for production SLAs.

Does FreeAPI store data or charge fees for this service?

No. FreeAPI is an independent API directory and developer showcase. It does not sell third-party data or charge fees; it connects developers directly to official public endpoints.

Environment & EarthFreeAPI Gateway

USGS WaterFree REST API

USGS national real-time water streamflow, drought, and hydrological telemetry

API Docs

Developer Workbench & Live ConsoleZero-Auth

Test real endpoints directly, inspect live JSON, or copy implementation code.

Official Docs

Endpoint Requestready

GET

curl -X GET "https://waterservices.usgs.gov/nwis/iv/?format=json&sites=01646500&period=P1D" \
  -H "Accept: application/json"

ResponseReady / Idle

Ready for Live Evaluation

Click [ Send Request ] to dispatch a real request via FreeAPI proxy and inspect real JSON payloads.

Rate Limit

Unlimited

Auth Mode

Zero-Auth (Public)

Security & CORS

HTTPS • CORS Ready

Protocol

REST / JSON

DigitalOcean

$200 Free Cloud Credit

ScraperAPI

5,000 Free API Credits

Bright Data

Web Unlocker & Proxies

COMPANION DEVELOPER TOOL0ms Client Sandbox

IP Geolocation & ASN Lookup

Lookup geographic location, ISP, ASN, timezone, and coordinates for any IP address or domain name on an interactive map.

Launch Tool

Interactive Web Tool Available

Test and interact with this service in your browser using our IP Geolocation & ASN Lookup tool.

Open Live Tool

Frequently Asked Questions (FAQ)

Technical and integration answers for USGS Water.

Yes, USGS Water is listed as a free endpoint on FreeAPI Directory with an allowance of: Unlimited.

Official Service Provider Ownership: USGS Water

All data feeds, trademarks, and documentation belong directly to the original API provider. FreeAPI serves purely as a discovery index and documentation reference for developers.

DMCA / Takedown Request

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