---
title: "High and low waters"
method: GET
path: "/v1/tides/extremes/"
tags: ["Tides"]
---

# High and low waters

`GET /v1/tides/extremes/`

## Request

- Base URL: `https://thirdtrail.life`
- URL: `https://thirdtrail.life/v1/tides/extremes/`
- Auth: one of:
  - HTTP bearer
  - API key in cookie `sessionid`

High/low water times and heights for any coastal point. Relative to mean sea level, not chart datum.

## Query parameters

- `days` integer
- `lat` number, double, required
- `lon` number, double, required
- `start_date` string
- `tz` string

## Response `200`

No response body

---

[API](https://skmtc.dev/thirdtrail/apis/thirdtrail-api.md) · [All operations](https://skmtc.dev/thirdtrail/apis/thirdtrail-api/llms.txt) · [OpenAPI document](https://skmtc.dev/thirdtrail/apis/thirdtrail-api/revisions/742040ec3db6?raw)