# Tide99 — question guides

> US NOAA tide predictions, observed water levels and station-level marine conditions, each with its own timestamp.

This file covers /task-guides/. Use the site-wide reference at https://tide99.com/llms.txt for the broader site. Canonical website: https://tide99.com/. Documentation reviewed 2026-10-18; underlying records have their own dates. Fields to verify when supplied: NOAA station; prediction versus observation; datum and timezone; timestamp. Predictions and observed water levels are different products. Retain NOAA station, datum, timezone and timestamp; a tide height alone cannot establish safe swimming or navigation. This is read-only discovery; robots rules and source licences still apply.

## Start here

- [Agent instructions](https://tide99.com/task-guides/agent-use.md): How to find a record, use native search, interpret missing data and cite an answer.
- [Data context](https://tide99.com/task-guides/data-context.md): Site-specific identity fields, coverage, dates and limitations.
- [Source guide](https://tide99.com/task-guides/sources.md): Claim-to-source links for published guidance.
- [Task guide](https://tide99.com/task-guides/index.md): Practical steps and links into existing site tools.

## Existing site tools

- [Start a search on tide99.com](https://tide99.com/): Existing public page; use its visible controls and source dates.

## Published question guides

- [What does high tide and low tide mean?](https://tide99.com/task-guides/what-does-high-tide-and-low-tide-mean/index.md): Source-linked answer; published 2026-10-18.
- [What tide is safest to swim in?](https://tide99.com/task-guides/what-tide-is-safest-to-swim-in/index.md): Source-linked answer; published 2026-10-18.

## Optional

- [Machine-readable action index](https://tide99.com/task-guides/agent.json): Observed GET form, fixed navigation, document index and coverage metadata.
- [Expanded reference](https://tide99.com/task-guides/llms-full.txt): Read when the individual documents are insufficient; includes published article text.
- [Guide sitemap](https://tide99.com/task-guides/sitemap.xml): Indexable human-readable guide URLs only.