Live USGS river-gauge tick, deterministic
Live USGS river-gauge tick, deterministic. Answers "what is the flow at this gauge right now", "is this river high or low vs this week". Returns the latest streamflow (discharge, cfs) and gage height (ft) for one USGS site plus the 7-day min/max range, reading count, site name and coordinates, straight from USGS instantaneous values. Unknown sites 404 before payment. No LLM, no key, public domain.
10000 (raw units)
price
4
calls / 30d
3
unique payers
2026-09-14
updated
Provider
waterpulse.theaslangroupllc.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "10000",
"maxTimeoutSeconds": 604900
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:137",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:42161",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:480",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0x79A02482A880bCe3F13E09da970dC34dB4cD24D1",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:143",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:196",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:999",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0xb88339CB7199b77E23DB6E890353E22632Ba630f",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
"payTo": "62A253YPATFNJCPRKID3FKD77MYJFNTVRYRP4B4JWG36EGLPY7UXFWGI7I",
"asset": "31566704",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "xrpl:0",
"payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
"asset": "XRP",
"amount": "10000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "xrpl:0",
"payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
"asset": "524C555344000000000000000000000000000000",
"amount": "0.01",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "eip155:56",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
"amount": "10000000000000000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"site": "01646500"
},
"type": "http"
},
"output": {
"errors": {
"400": {
"description": "Invalid or missing parameter(s) — required: site. Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints.",
"example": {
"error": "site parameter required"
}
},
"402": {
"description": "Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."
},
"500": {
"description": "Unexpected server error. If a payment settled without a usable result, contact [email protected] with the settlement tx hash for a re-run or credit.",
"example": {
"error": "upstream_failed"
}
}
},
"example": {
"deterministic": true,
"readings": [
{
"latestValue": 4420,
"max7d": 5210,
"min7d": 3890,
"parameterCd": "00060",
"unit": "ft3/s",
"variableName": "Streamflow, ft³/s"
}
],
"site": {
"code": "01646500",
"latitude": 38.9498,
"longitude": -77.1276,
"name": "POTOMAC RIVER NEAR WASH, DC LITTLE FALLS PUMP STA"
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"site": {
"description": "USGS site number (8-15 digits)",
"type": "string"
}
},
"required": [
"site"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"errors": {
"additionalProperties": {
"properties": {
"description": {
"type": "string"
},
"example": {
"type": "object"
}
},
"required": [
"description"
],
"type": "object"
},
"description": "Documented error responses, keyed by HTTP status code",
"type": "object"
},
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_gxy6qn5p"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"reconciliation": {
"info": {
"category": "Software > Data & APIs",
"memo": "PulseNetwork WaterPulse /api/water/gauge: pay-per-call data API, 1 request, USD 0.01. Seller: The Aslan Group LLC.",
"receipt": {
"format": "ISO 20022 camt.054-style XML+JSON, Ed25519-signed, deterministic",
"obtain": "GET https://onchainpulse.theaslangroupllc.com/api/iso-receipt?tx=<transaction from PAYMENT-RESPONSE>&chain=<base|solana|ethereum|polygon|arbitrum|optimism|bsc|avalanche|robinhood> (x402, USD 0.05)",
"verify": "https://onchainpulse.theaslangroupllc.com/verify.html"
},
"seller": {
"brand": "PulseNetwork",
"catalog": "https://pulse.theaslangroupllc.com",
"legal_name": "The Aslan Group LLC"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"category": {
"type": "string"
},
"memo": {
"description": "Seller-provided reconciliation memo for this purchase. Pass it to your payment tool where one is accepted (e.g. the memo input of Ramp pay-with-x402).",
"type": "string"
},
"receipt": {
"properties": {
"format": {
"type": "string"
},
"obtain": {
"type": "string"
},
"verify": {
"type": "string"
}
},
"type": "object"
},
"seller": {
"properties": {
"brand": {
"type": "string"
},
"catalog": {
"type": "string"
},
"legal_name": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"memo"
],
"type": "object"
}
}
}Use it
curl
curl "https://waterpulse.theaslangroupllc.com/api/water/gauge" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://waterpulse.theaslangroupllc.com/api/water/gauge");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://waterpulse.theaslangroupllc.com/api/water/gauge")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/3467.json, and this resource appears in /discovery/resources and /discovery/search.