{"uid":"cap_TUaa5EH0knyxcJ6sdQVTY","slug":"land-survey-screening-ground-elevation-lookup-508a7327","name":"Land Survey Screening – Ground Elevation Lookup","description":"Ground elevation in feet and meters at a US latitude and longitude from USGS 3DEP, with data-coverage check.","url":"https://land-survey.x402tookit.com/elevation?utm_source=zero.xyz","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"],"type":"string"},"queryParams":{"type":"object","required":["lat","lon"],"properties":{"lat":{"type":"number","description":"Latitude, e.g. 39.7392"},"lon":{"type":"number","description":"Longitude, e.g. -104.9903"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"lat":{"type":["null","number"]},"lon":{"type":["null","number"]},"asOf":{"type":["null","string"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"sourceUrl":{"type":["null","string"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"elevationFeet":{"type":["null","number"]},"elevationMeters":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_8cTitOkdB2iEIK0RowqAf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns ground elevation in feet and meters at a US latitude/longitude coordinate using USGS 3DEP data, with a data-coverage check.","exampleAgentPrompt":"What's the ground elevation at latitude 39.7392, longitude -104.9903? I need the answer in both feet and meters from USGS data.","exampleUseCases":[{"title":"Pre-construction site elevation check","prompt":"Before we start designing, can you pull the USGS ground elevation at lat 37.7749, lon -122.4194? I need it in both feet and meters."},{"title":"Flood risk pre-screening for a property","prompt":"I'm evaluating a property at lat 29.9511, lon -90.0715 in New Orleans — what's the ground elevation there in feet and meters so I can get a sense of flood exposure?"},{"title":"Remote sensing data coverage verification","prompt":"I need to know if USGS 3DEP elevation data is available and reliable for the coordinate lat 64.2008, lon -153.1686 in Alaska — can you check and tell me the elevation if it exists?"}],"resultDescription":"Returns a JSON object containing the input lat/lon, elevation in feet and meters, the USGS data source URL, a coverage verdict (e.g. available/degraded/not available), a human-readable summary, reasons for any degraded or missing coverage, a list of unchecked items, a timestamp (asOf), and a disclaimer about data accuracy.","failureModes":["Coordinates outside the US or US territories — USGS 3DEP only covers US points, resulting in a null elevation and a coverage failure verdict","Invalid lat/lon values outside valid ranges cause a 400-class error","Degraded data flag returned when 3DEP coverage exists but resolution is lower than optimal","Network or upstream USGS service outage causing a 500-level error or timeout","Missing required query parameters (lat or lon) returns a validation error"],"whenToPreferThis":"Choose this endpoint when you need USGS-authoritative ground elevation at a specific US point, especially when you also need to know whether 3DEP coverage is available and reliable at that location. It is ideal for site-screening workflows, pre-construction assessment, flood risk analysis, or any geospatial pipeline that requires certified elevation in both feet and meters. Prefer this over generic geocoding elevation estimates when regulatory-grade or survey-grade sourcing matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:14:23.979Z","isFirstParty":false,"canonicalSlug":"land-survey-screening-ground-elevation-lookup-508a7327"}