/**
 * @fileoverview Zod schemas for the input formats USGS NWIS actually accepts, verified against
 * the live service. Shared by every tool that forwards a value into an NWIS query parameter, so
 * a malformed value is rejected at the edge instead of being inferred from NWIS's HTML 400 prose.
 *
 * Each export is a bare, undescribed schema — attach tool-specific guidance with `.describe()` at
 * the definition site (`.describe()` clones, so the shared base is never mutated). The `.regex()`
 * constraints also serialize into each tool's advertised JSON Schema as `pattern`, so a calling
 * model sees the format rule rather than only reading it in prose.
 * @module services/nwis/input-schemas
 */
import { z } from '@cyanheads/mcp-ts-core';
/** USGS site number — 8–15 digits, zero-padded (e.g. "01646500"). */
export declare const SiteNumberSchema: z.ZodString;
/** A single 5-digit USGS parameter code (e.g. "00060"). */
export declare const ParameterCdSchema: z.ZodString;
/**
 * One or more 5-digit parameter codes, comma-separated. NWIS accepts multi-value parameterCd on
 * the site service and the IV/DV data endpoints.
 */
export declare const ParameterCdListSchema: z.ZodString;
/**
 * ISO 8601 duration. NWIS requires the full duration grammar and rejects negative periods
 * (e.g. "P-T2H"), which this pattern excludes by construction.
 */
export declare const PeriodSchema: z.ZodString;
/**
 * Hydrologic Unit Code. NWIS accepts a 2-digit major HUC or an 8-digit minor HUC and nothing
 * else — 4-, 6-, 10-, and 12-digit values are all rejected upstream.
 */
export declare const HucSchema: z.ZodString;
/** FIPS county code(s) — bare 5-digit codes, comma-separated, up to the 20 NWIS allows per request. */
export declare const CountyCdSchema: z.ZodString;
/** 2-letter US state or territory abbreviation. */
export declare const StateCdSchema: z.ZodString;
/** Bounding box — four comma-separated decimal degrees ordered "west,south,east,north". */
export declare const BboxSchema: z.ZodString;
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