---
title: "NOAA CO-OPS stations catalog"
method: GET
path: "/api/v1/environment/noaa-tides/stations"
tags: ["Environment"]
---

# NOAA CO-OPS stations catalog

`GET /api/v1/environment/noaa-tides/stations`

List CO-OPS stations. Default `type=waterlevels` returns the 301 primary National Water Level Observation Network (NWLON) stations covering all US coasts, the Great Lakes, Alaska, Hawaii, and territories (some with continuous records since 1856). Pass `type=tidepredictions` for the full 3,449-entry prediction catalog (primary stations plus subordinate offsets), `type=currents` for 88 current-meter stations in PORTS projects, or `type=all` for the unfiltered upstream set. Optional `state` 2-letter filter is applied client-side against Sugra's 24-hour in-process catalog cache. Attribution: NOAA CO-OPS Tides and Currents (api.tidesandcurrents.noaa.gov).

## Query parameters

- `type` string — Catalog filter: `waterlevels` (301 primary gauges), `tidepredictions` (3,449 including subordinate), `currents` (88 PORTS current meters), or `all`.
- `state` string, nullable — 2-letter US state or territory code filter (e.g. `NY`, `CA`, `HI`). Case-insensitive.
- `limit` integer — Maximum number of station records to return (default 500, maximum 4000 to fit the 3,449-entry prediction catalog).
- `offset` integer — Zero-indexed offset into the filtered list.

## Response `200`

Filtered station catalog listing with total and filtered counts.

- EnvelopeNoaaTidesStationsPayload
  - `data` NoaaTidesStationsPayload, required — Catalog listing of CO-OPS stations.
    - `type` string, required — Catalog filter applied upstream (`waterlevels`, `tidepredictions`, `currents`, or `all`).
    - `state` string, nullable — 2-letter US state filter applied client-side, if any.
    - `total` integer, required — Total number of stations in the catalog before filtering.
    - `filtered` integer, required — Number of stations after applying the `state` filter.
    - `stations` NoaaTidesStation[], required — Paginated list of station records.
      - `id` string, nullable — 7-digit CO-OPS station identifier (e.g. `8518750`).
      - `name` string, nullable — Human-readable station name (e.g. `The Battery`).
      - `state` string, nullable — 2-letter US state or territory code.
      - `lat` number, nullable — Latitude in decimal degrees (WGS84).
      - `lng` number, nullable — Longitude in decimal degrees (WGS84).
      - `timezone` string, nullable — Station-local timezone abbreviation (e.g. `EST`, `HAST`).
      - `timezonecorr` integer, nullable — UTC offset of the station-local timezone in hours.
      - `tidal` boolean, nullable — True when the station is affected by ocean tides.
      - `greatlakes` boolean, nullable — True when the station is on the Great Lakes (uses IGLD, not MLLW).
      - `shefcode` string, nullable — National Weather Service SHEF code cross-reference.
      - `portscode` string, nullable — PORTS network short code (e.g. `ny`) when applicable.
      - `affiliations` string[], nullable — Program affiliations (e.g. `NWLON`, `NWLORTS`, `PORTS`).
      - `tideType` string, nullable — Tide type classification (`Semidiurnal`, `Diurnal`, `Mixed`, `Unknown`).
    - `attribution` string, required — Upstream attribution string.
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

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