# The data behind the pages

Every beach page is built from files you can read too.

## Files

- [`/data/spots.json`](https://tidepooldays.com/data/spots.json) Every beach: stable id, name, coordinates, coast, NOAA station, distance and setting, its page, and its picked-day counts per month for 2027.
- [`/data/spots/tpd-wa-salt-creek.json`](https://tidepooldays.com/data/spots/tpd-wa-salt-creek.json) One beach, as above, plus its picked days for the next 30 days. Example: Salt Creek Recreation Area (Tongue Point)
- [`/data/days/tpd-wa-salt-creek.json`](https://tidepooldays.com/data/days/tpd-wa-salt-creek.json) One beach's picked days for the next 30 days, and nothing beyond; there is one file per beach, named by its stable id. Example: Salt Creek Recreation Area (Tongue Point)
- [`/llms.txt`](https://tidepooldays.com/llms.txt) A plain-text guide to the site for AI engines and answer engines.
- [`/llms-full.txt`](https://tidepooldays.com/llms-full.txt) Every beach with its station, its next ten picked days and its picked days per month.
- [`/sitemap.xml`](https://tidepooldays.com/sitemap.xml) The sitemap index, pointing to the beach and page sitemap and the notes sitemap.

## Where the numbers come from

Tide predictions come from NOAA's CO-OPS data service (high and low predictions, datum MLLW, feet, station local time). NOAA's material is in the public domain.

The predictions are stored in this site's repository and read when the site is built; a visit never calls NOAA.

The picking, the daylight check and the windows are this site's own work. NOAA does not endorse it.

## Using the files

You may use these files freely. Please name Tidepool Days and NOAA CO-OPS as the sources.

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Markdown copy of https://tidepooldays.com/data/