Environment

Annual peak streamflow events

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.

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

Query parameters

sitestring required

USGS site number.

start_yearinteger

Start water year.

end_yearinteger

End water year.

Response

Annual peak streamflow record for the requested site.

Example response

{
  "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",
    "data_age_days": 8.532,
    "source": "sugra_crypto",
    "attribution": "Short interest and Reg SHO daily short volume data is owned by and sourced from FINRA (Financial Industry Regulatory Authority).",
    "fallback_chain": [
      "sugra_crypto",
      "sugra_finance"
    ],
    "period": "2026-Q1",
    "notes": "the UKMTO report behind these counts is dated 2026-08-21 and is 11 days old"
  }
}

Changes

Changed in 2 of the 25 revisions of this API.15

Sep 1, 2026328d061c12ca3See the full diff
- ○
  added the optional property / to the response with the status
  response-optional-property-added
- ○
  added the optional property / to the response with the status
  response-optional-property-added
- ○
  added the optional property / to the response with the status
  response-optional-property-added
Aug 8, 20264c4530760ba112See the full diff
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added
- ○
  added the optional property to the response with the status
  response-optional-property-added

Full history