/**
 * Adapter for GSI (Geological Survey Ireland) groundwater + historic flood
 * mapping. Openly licensed; the OPW's fluvial/coastal model extents are
 * CC-BY-NC-ND and deliberately NOT queried — see docs/DATA_SOURCES.md §5.
 *
 * Uses the MapServer `identify` operation, not `query`: verified 2026-07-10
 * that this service withholds geometry from /query responses in every format
 * (returnGeometry=true is silently ignored), while /identify returns full
 * polygon rings and hits all sublayers in a single request. WGS84 in/out
 * (sr=4326) confirmed working. The search "radius" is expressed via
 * tolerance=50px against a 100×100px imageDisplay whose mapExtent spans
 * ±radius around the point, so it is approximate (documented in caveats).
 *
 * Sublayer ids pinned 2026-07-10:
 *   1 = Groundwater Flooding High Probability
 *   2 = Groundwater Flooding Medium Probability
 *   3 = Groundwater Flooding Low Probability
 *   6 = Winter 2015/2016 Surface Water Flooding
 *   7 = Maximum Historic Groundwater Flooding
 */
export declare const GSI_FLOOD_LAYERS: readonly [{
    readonly id: 1;
    readonly key: "groundwater_flood_probability_high";
    readonly name: "Groundwater Flooding High Probability";
}, {
    readonly id: 2;
    readonly key: "groundwater_flood_probability_medium";
    readonly name: "Groundwater Flooding Medium Probability";
}, {
    readonly id: 3;
    readonly key: "groundwater_flood_probability_low";
    readonly name: "Groundwater Flooding Low Probability";
}, {
    readonly id: 7;
    readonly key: "historic_groundwater_flooding_max";
    readonly name: "Maximum Historic Groundwater Flooding";
}, {
    readonly id: 6;
    readonly key: "surface_water_flooding_winter_2015_16";
    readonly name: "Winter 2015/2016 Surface Water Flooding";
}];
export interface FloodLayerCheck {
    layer: (typeof GSI_FLOOD_LAYERS)[number]["key"];
    layer_name: string;
    checked: true;
    features_within_radius: number;
    /** True when the query point lies inside a mapped extent. */
    at_point: boolean;
    /** Metres from the point to the nearest mapped extent within the radius; null when none found. */
    nearest_distance_m: number | null;
}
/** Query all five GSI flood layers around a point in one identify request. Cached 30d. */
export declare function queryGsiFlood(lat: number, lng: number, radiusM: number, fetchImpl?: typeof fetch): Promise<FloodLayerCheck[]>;
export declare const GSI_FLOOD_META: {
    readonly source: "Groundwater & Historic Flood Maps, Geological Survey Ireland (GSI)";
    readonly source_url: "https://gsi.geodata.gov.ie/server/rest/services/Groundwater/IE_GSI_Groundwater_Historic_and_Probability_Flood_Maps_20K_IE26_ITM/MapServer";
    readonly licence: "CC-BY 4.0 (Geological Survey Ireland)";
    readonly data_vintage: "GSI groundwater flood probability mapping (1:20,000) and historic groundwater/surface-water flood observations incl. winter 2015/2016";
};
/** floodinfo.ie viewer for the OPW layers we cannot legally query. */
export declare const FLOODINFO_URL = "https://www.floodinfo.ie/map/floodmaps/";