# AGENTS.md - U.S. state submerged lands

Guidance for AI agents and LLMs working with this collection.

## Overview

The 483 polygons of coastal submerged lands that the Submerged Lands Act (43 U.S.C. 1301 et seq.) grants to the states (3 nautical miles; 9 for Texas, Puerto Rico and Florida's Gulf coast), i.e. the state side of the federal / state split. The source carries no state or site name, only the statute (`statute`, `citation`, `codification`); the place name is generic and the id is the source OBJECTID.

Licence CC-PDDC; credit: National Oceanic and Atmospheric Administration (NOAA), Office for Coastal Management (OCM), via MarineCadastre.gov. Public domain. Processed by Ocean Metrics.

## Find a place

```sql
SELECT * FROM read_parquet('https://storage.oceanmetrics.io/gazetteer/noaa_state_submerged_lands/places.parquet')
WHERE name ILIKE '%california%';
```

`place_id` is unique and prefixed; `status` / `status_source` / `status_date` say whether the place is current and
where that is documented. Check `status` before treating a lease or area as live.

## Render on a map

Load `places.pmtiles` (layer `noaa_state_submerged_lands`) into MapLibre GL via the PMTiles protocol; `styles/default.json` is a starting style.