Privacy Policy

Effective date: September 9, 2026

LakeLevels (lakelevels.app) shows current and historical water levels for US lakes and reservoirs. This page describes what information the site handles and how.

No accounts

LakeLevels has no user accounts. You never sign up, and we do not ask for your name, email address, or any other personal details to use the site.

Favorites stay in your browser

If you save a lake as a favorite, that list is stored in your browser’s localStorage on your device only. It is never sent to our servers, and clearing your browser data removes it.

Server logs

The site is hosted on Vercel. Like most web hosts, Vercel generates standard request logs (such as IP address, browser user agent, and the pages requested) that we use to operate, secure, and debug the site. See the Vercel privacy policy for how Vercel processes this data.

Traffic measurement

LakeLevels uses Vercel Analytics to measure first-party traffic (page views on this site). It does not use third-party analytics such as Google Analytics, and it does not set a cookie for this measurement.

Advertising and cookies

When advertising is enabled, LakeLevels uses Google AdSense to serve ads. Google, as a third-party vendor, uses cookies and similar identifiers to serve ads based on your visits to this and other websites. You can read about how Google uses information from sites that use its services at policies.google.com/technologies/partner-sites, and you can opt out of personalized advertising in Google’s Ads Settings. Aside from these advertising cookies, LakeLevels does not set cookies of its own.

Where the lake data comes from

All water-level data is fetched from public government and utility APIs (USGS, Bureau of Reclamation, USACE, TVA, Duke Energy, Alabama Power, Georgia Power, and the Texas Water Development Board). Those requests are made from our servers, not from your browser, so no information about you is shared with these sources. Learn more on the About page.

Changes to this policy

If this policy changes, we will update this page and the effective date above.

Contact

Questions about this policy? See the About page for contact details.