{"uid":"cap_rPgyvsNQ2JzBVZ1fy9Qkx","slug":"waterpulse-streamflow-api-1feab3b2","name":"WaterPulse Streamflow API","description":"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.","url":"https://waterpulse-henna.vercel.app/api/water/streamflow","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"lang":{"type":"string","description":"en | es | fr | de | ja | zh | ko | pt | ar (default: en)"},"site":{"type":"string","description":"USGS site number (optional) — e.g. 09380000 (Colorado River at Lees Ferry)"},"limit":{"type":"string","description":"5 | 10 | 20 (default: 10)"},"state":{"type":"string","description":"Two-letter US state code — e.g. CO | OR | TN | NY"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"errors":{"type":"object","description":"Documented error responses, keyed by HTTP status code","additionalProperties":{"type":"object","required":["description"],"properties":{"example":{"type":"object"},"description":{"type":"string"}}}},"example":{"type":"object"}}}}},"responseSchema":{"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}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_djw7rF18TxO4a8jGoS2mT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns real-time streamflow conditions, flood-stage context, and low-flow drought signals from USGS gauge stations for a given location or gauge ID.","exampleAgentPrompt":"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?","exampleUseCases":null,"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:51:48.661Z","isFirstParty":false}