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WaterPulse Streamflow API
x402
WaterPulse Streamflow API is a paid API for AI agents from waterpulse-henna.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Returns real-time streamflow conditions, flood-stage context, and low-flow drought signals from USGS gauge stations for a given location or gauge ID.
Price / call$0.05
Success—
StatusUnknown
How this service works
Real-time water intelligence API. Groundwater levels, streamflow, drought status, water quality, aquifer analysis, flood risk, and global water stress — pay-per-query via x402.
Output
Returns current streamflow measurements (likely in CFS or CMS), flood-stage classification indicating whether the river is below, at, or above flood threshold, and low-flow drought signals indicating hydrological drought conditions, sourced from the relevant USGS gauge station.
Example use cases
Example prompt
“What are the current streamflow conditions at USGS gauge station 01646500 on the Potomac River — is it in flood stage, normal range, or showing low-flow drought signals?”
Technical details
Endpoint
GEThttps://waterpulse-henna.vercel.app/api/water/streamflowWhen to prefer
Choose this endpoint when you need real-time, station-level streamflow data with explicit flood-stage context and drought/low-flow signals from USGS gauges. Prefer this over general weather APIs that lack hydrological specificity, and over this provider's flood-risk endpoint when you need raw streamflow metrics rather than composite flood risk scores.
Side effects
- Invalid or unknown USGS gauge station ID returns a 404 or error response
- USGS data feed temporarily unavailable causes stale or missing data
- Location input that cannot be resolved to a gauge station returns no results
- Gauge station offline or under maintenance returns no current readings
- Payment not processed (x402) results in 402 response before data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"signal": "Widespread below-normal flows across Colorado indicate ongoing drought stress. No flood risk at monitored sites.",
"data_source": "USGS Instantaneous Values Water Services",
"flow_summary": {
"sites_in_flood": 0,
"lowest_flow_site": "Arkansas River nr Pueblo — 34% of median",
"sites_above_normal": 1,
"sites_below_normal": 8
},
"query_summary": {
"state": "CO",
"parameter": "discharge_cfs",
"sites_analyzed": 10
},
"stream_readings": [
{
"date_time": "2026-06-07T14:00:00",
"site_code": "09380000",
"site_name": "Colorado River at Lees Ferry, AZ",
"discharge_cfs": "8420",
"flow_condition": "Below normal",
"percent_of_median": 61
}
]
}
}Tags
x402
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