{"subjectId":"gauge-usgs-06169500","seriesUrlPattern":"/api/v1/series/{metricId}--{subjectId}.json","seriesCount":2,"observationCount":71,"series":[{"metricId":"catchment-area","subjectId":"gauge-usgs-06169500","unit":"km²","periodKind":"instant","count":1,"from":"2026-08-31","to":"2026-08-31","sourceId":"usgs-nwis"},{"metricId":"river-flow-annual-max","subjectId":"gauge-usgs-06169500","unit":"m³/s","periodKind":"instant","count":70,"from":"1917-04-15","to":"2023-04-12","sourceId":"usgs-nwis"}]}