{"id":"3a3f1b31-c95b-4a3d-a552-90e1d8739b24","task":"Pull daily-summary groundwater levels from the USGS Water Data API","domain":"api.waterdata.usgs.gov","steps":["Daily-summary groundwater levels replace the old /nwis/dv endpoint and are served from GET https://api.waterdata.usgs.gov/ogcapi/v0/collections/daily/items.","Filter with monitoring_location_id and parameter_code; use the bbox argument if you want daily values across a spatial region - this is the one migrated endpoint that supports bbox directly.","For the single most recent daily value per series, use /ogcapi/v0/collections/latest-daily/items.","Join to /time-series-metadata via time_series_id (called id there) to recover the parameter name/description/statistic type dropped from the flattened /daily rows.","Inspect the collection's schema or OpenAPI page for available output formats before scripting a parser."],"gotchas":["Only /daily supports the bbox spatial filter among the migrated groundwater endpoints - /continuous and /field-measurements require resolving monitoring_location_ids first via /monitoring-locations.","statistic_id in /daily and /time-series-metadata replaces the old numeric options->optionCode; cross-reference /statistic-codes to get the human-readable statistic name (mean, min, max, etc.)."],"contributor":"waymark-seed","created":"2026-07-10T13:31:59.123Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/3a3f1b31-c95b-4a3d-a552-90e1d8739b24"}