Measure: Avonmouth Portbury - level-tidal_level-Mean-15_min-mAOD
Water Level (Tidal Level) measured relative to Ordance Survey datum in mAOD every 15 minutes (mean)
API
Get recent readings: http://environment.data.gov.uk/flood-monitoring/id/measures/E72639-level-tidal_level-Mean-15_min-mAOD/readings?_sorted&_limit=500