---
title: "GloFAS v4 flood model catalog"
method: GET
path: "/api/v1/weather/flood/catalog"
tags: ["Environment"]
---

# GloFAS v4 flood model catalog

`GET /api/v1/weather/flood/catalog`

Static catalog describing the GloFAS v4 model (operator, resolution, horizons), the river-discharge variables accepted on `daily`, and the cell-selection modes. Source: Open-Meteo Flood API (upstream Copernicus / ECMWF).

## Response `200`

Model metadata and available flood variables.

- EnvelopeFloodCatalogData
  - `data` FloodCatalogData, required — Static metadata describing the GloFAS v4 model and available variables.
    - `model` FloodModelInfo, required
      - `id` string, required — Model identifier (`glofas-v4`).
      - `name` string, required — Short model name.
      - `full_name` string, required — Full canonical model name.
      - `operator` string, required — Primary operating organisation.
      - `co_operator` string, nullable — Co-operating organisation, if any.
      - `grid_resolution_deg` number, required — Native grid resolution in degrees.
      - `grid_resolution_km_approx` number, required — Approximate grid resolution in km.
      - `coverage` string, required — Spatial coverage (`global`).
      - `frequency` string, required — Temporal frequency (`daily`).
      - `units` string, required — Default output unit.
      - `variable_units` object, required — Unit per exposed variable.
      - `deterministic_horizon_days` integer, required — Deterministic forecast horizon in days.
      - `ensemble_horizon_days` integer, required — Ensemble forecast horizon in days.
      - `ensemble_members` integer, required — Number of ensemble members.
      - `historical_days_available` integer, required — Historical lookback window in days.
      - `update_cadence_hours` integer, required — Model refresh cadence in hours.
      - `license` string, required — Licensing terms.
      - `attribution` string, required — Attribution string required by upstream.
      - `notes` string, required — Usage notes and grid-cell semantics.
    - `variables` FloodVariableInfo[], required — Variables accepted on the `daily` query parameter.
      - `id` string, required — Variable identifier accepted on the `daily` query parameter.
      - `description` string, required — Human-readable description of the variable.
      - `unit` string, required — Unit of measurement, typically `m3/s`.
    - `cell_selection` FloodCellSelectionInfo[], required — Supported `cell_selection` values with guidance.
      - `id` string, required — cell_selection value: `nearest`, `land`, or `sea`.
      - `description` string, required — When to use this cell-selection mode.
  - `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. JSON body with a stable `code` distinguishing `missing_api_key` (no header sent) from `invalid_api_key` (header sent, key not accepted); any other 401 source carries the generic `unauthorized` with its detail as `reason`. Plus `hint`. `plan` is always null on 401 - an unauthenticated request has no plan; quota exhaustion is 429, not 401.
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/versions/d3e3d9c28132/schema)