TLE vs USGS Water Services
Same instrument, two spec sheets — measured, not claimed.
TLE vs USGS Water Services: common questions
Which is more reliable, TLE or USGS Water Services?
On our scheduled checks, USGS Water Services leads on measured uptime — TLE at —% versus USGS Water Services at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do TLE and USGS Water Services need an API key?
Neither needs a paid key — TLE is callable with no signup, and USGS Water Services is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call TLE and USGS Water Services from the browser?
Yes — both TLE and USGS Water Services send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are TLE and USGS Water Services free for commercial use?
TLE has unclear commercial terms, and USGS Water Services allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.