River Levels: Gauge Log

River levels with the source, station ID and observation time beside each reading, plus a plain-language view of rises, falls and daily ranges.

▶ KNOW THE SOURCE
• See the agency, station ID, observation time and elapsed minutes beside each reading.
• Check the raw provider value and unit, measurement reference and Provisional or quality status.
• Open the provider station page and data attribution from the gauge detail.
• Gauges keeps cached readings between visits and labels older values Last known reading.

▶ READ THE RISE OR FALL
• Read Rising, Falling or Steady, with a rate per hour from the last 3 hours when enough observations are available.
• See the 24-hour minimum and maximum alongside the current reading.
• At supported US gauges, compare the level with agency stages when the station and vertical reference match.
• Inspect a 7-day observation chart; breaks show missing samples.

▶ KEEP TRIPS BY GAUGE
• Log a trip with its time, a Too low, Good or Too high rating, and a note.
• The nearest observation for that gauge and parameter within 60 minutes becomes the trip reading. Add a manual reading when needed; it is marked Entered by you.
• Filter Trips by station, edit ratings and notes, or undo a deletion.
• With at least 3 matching Good-rated trip readings, see your good-trip range on the chart and gauge.

▶ SET YOUR CROSSING
• Set an alert for Crosses above, Crosses below or Enters your good-trip range.
• Choose a threshold, Re-arm distance and station-local Quiet hours.
• Alerts use standard notifications and periodic checks; battery saving can delay checks.

▶ FIND AND KEEP YOUR GAUGES
• Search by river, station name or station ID in the US, England, Germany and France, and save gauges for later.
• Choose Level or Flow and display m / ft or m³/s / cfs.
• Map provides an outline overview with selectable station dots.
• Export backup as a JSON manifest and numbered parts; restore needs the complete set.

▶ GOOD TO KNOW
• Source availability varies. Missing readings or observations older than 3 hours show No recent data in the station detail.
• Stage comparisons need matching reference metadata and are not available at every gauge.
• A trip can have Reading unavailable. Your good-trip range is not a safety guide. This is not a warning service; check local authorities.
• Location for Nearby stations is optional. Notifications need permission.
• Backups are created in app storage before sharing; copies saved elsewhere stay where you put them.