Annual peak streamflow events

GET

/api/v1/environment/usgs-water/peak

Last modified:2026-05-10 09:22:39

Maintainer:Not configured

OperationId:environment_usgs_water_peak

One row per water year (Oct 1 - Sep 30) covering the site's full history of annual peak discharge. Flood-frequency analysis input. Hosted on nwis.waterdata.usgs.gov (not waterservices); legacy-only, no OGC equivalent.

Request

Authorization

API Key

Add parameter in header

x-api-key

Example:

x-api-key: ********************

Query Params

Header Params

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location '/api/v1/environment/usgs-water/peak?site=01646500&start_year=2000&end_year=2024' \
--header 'x-api-key: <api-key>'

Responses

🟢200

application/json

Annual peak streamflow record for the requested site.

Bodyapplication/json

Example

{
    "data": {
        "peaks": [
            {
                "agency": "string",
                "site_id": "string",
                "water_year": 0,
                "peak_date": "string",
                "peak_value_cfs": 0,
                "gage_height_ft": 0,
                "property1": "string",
                "property2": "string"
            }
        ],
        "count": 0,
        "api_version": "string",
        "property1": "string",
        "property2": "string"
    },
    "meta": {
        "endpoint": "/api/v1/fred/us/cpi",
        "data_time": "2026-04-16T14:30:00Z",
        "response_time": "2026-04-16T14:30:12Z",
        "provider": "Sugra API v1.0.1",
        "source": "string",
        "fallback_used": true,
        "fallback_chain": [
            "string"
        ],
        "cached": true
    }
}

🟠401

🟠422

🟠429

🔴503

Modified at 2026-05-10 09:22:39

USGS Water statistics (daily/monthly/annual)

USGS Water parameter-code catalog