← The evidence ledger
Evidence row 66956
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.locus.report/api/locus-groundwater-context
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 2e04463eadee3df0f0f137c2e81e70721d704d9432b44fa1c93d3518ba9d413c
- Leaf
- 0x36c4ee8a31bdf5cb5a10b550594ab69c98f21a7b97563e0c4c3959dcd0ad1438
What was observed
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"owner_address": "0xf121fbecec43e1b616d47285851c20d5fc64431b",
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"address": "1 E Edenton St, Raleigh, NC 27601",
"radiusMeters": 5000
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"USGS groundwater monitoring wells are often purpose-drilled observation wells, not domestic wells; their construction depths and water levels do not predict the depth, yield, or feasibility of a future household well.",
"USGS fields are sparse. A missing well depth or aquifer code is reported as unknown rather than zero, shallow, or evidence that no aquifer is present."
],
"componentStatus": {
"aquiferNames": "ok",
"fieldMeasurements": "ok",
"monitoringLocations": "ok"
},
"message": "Nearby USGS groundwater monitoring records were found. They describe observation locations and do not predict a domestic well at the subject property.",
"monitoringWells": {
"aquiferReportedCount": 69,
"aquiferUnknownCount": 0,
"aquifers": [
{
"code": "N400PDMBRX",
"monitoringWellCount": 69,
"name": "Piedmont and Blue Ridge crystalline-rock aquifers",
"scope": "national"
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{
"code": "110SPRL",
"monitoringWellCount": 1,
"name": "Saprolite",
"scope": "local"
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"depthDistribution": {
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"median": 245,
"min": 18,
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"totalWellCount": 69,
"unit": "ft below land-surface datum",
"unknownCount": 3
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"totalFound": 69
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"note": "Awareness/diagnostic only. Full briefs are x402-paid. Agents can discover live free tools at https://api.locus.report/tools/list and paid tools, prices, and manifests at https://api.locus.report/.well-known/ai-tool/index.json.",
"ok": true,
"point": {
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"longitude": -78.63910200000142
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"provenance": {
"fetchedAt": "2026-09-23T01:11:21.665Z",
"fieldMeasurementsCollection": "https://api.waterdata.usgs.gov/ogcapi/v0/collections/field-measurements/items",
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"source": "USGS Water Data OGC API",
"sourcePage": "https://api.waterdata.usgs.gov/ogcapi/v0/collections/monitoring-locations"
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"state": "data",
"staticWaterLevel": {
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"approvalStatus": "Approved",
"datum": "NAVD88",
"distanceBand": "1_to_3_km",
"distanceBandLabel": "1-3 km away",
"kind": "elevation_above_vertical_datum",
"measuredAt": "2026-08-13T17:41:00+00:00",
"monitoringLocationId": "USGS-354649078400702",
"parameterCode": "62611",
"unit": "ft",
"value": 313.39
},
"multiYearRecordExists": true,
"status": "observed",
"trend": {
"annualChange": null,
"basis": "58 static measurements across 8 distinct years and 7.17 years; insufficient for a directional statement under the conservative Locus threshold.",
"direction": null,
"distinctYearCount": 8,
"fitR2": null,
"measurementCount": 58,
"spanYears": 7.17,
"status": "insufficient_record",
"unitPerYear": null
}
},
"verifyNext": [
{
"step": "Open the USGS Water Data monitoring-location collection and verify the cited monitoring-location ID and measurement series.",
"url": "https://api.waterdata.usgs.gov/ogcapi/v0/collections/monitoring-locations"
},
{
"step": "Check locus_sole_source_aquifer for EPA designation context: it explains federal project review under SDWA -1424(e), not current water quality or a private-owner restriction.",
"url": "https://api.locus.report/tools/call"
}
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"builder-code": {
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"locus.freePreflight": {
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"laneTool": "locus_lane_availability",
"mcpUrl": "https://mcp.locus.report/mcp",
"recommendedTool": "locus_coverage_check",
"skillInstall": "npx @velinussage/locus-agent-skill add",
"skillUrl": "https://api.locus.report/.well-known/skill.md",
"toolsCallUrl": "https://api.locus.report/tools/call",
"toolsListUrl": "https://api.locus.report/tools/list",
"unsupportedReturnsFreeDiagnostic": true,
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"resource": "https://api.locus.report/api/locus-groundwater-context",
"type": "http",
"x402Version": 2
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"source": "x402_bazaar",
"summary": "USGS distance-banded monitoring wells, aquifer codes and names, construction depths, and static water levels for an address, from USGS Water Data. Returns the same records as locus_groundwater_context. Use this when your client can only call paid x402 routes. Use locus_groundwater_context instead when you can call Locus free tools (REST tools/call or MCP)."
}What the leaf hashes
{"body":"2e04463eadee3df0f0f137c2e81e70721d704d9432b44fa1c93d3518ba9d413c","id":66956,"kind":"listing","method":"baseline/1","observed_us":1793025461700384,"prev":null,"subject":"x402_bazaar:https://api.locus.report/api/locus-groundwater-context","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.