Hydro Processor

Built in-house, used every week. We wrote the Hydro Processor because the tools on the market were expensive and slow for the work a small monitoring crew actually does. It now produces many of the streamflow records we publish for our clients.

From Raw Pressure to Discharge, on One Screen

Logger pressure, barometric pressure, stage and discharge sit one above the other on the same time axis, with rain laid over them. Select a stretch, apply an offset or a drift, and watch the correction carry through to the flow. Staff gauge readings and flow measurements are marked on the record they check.

Why it matters: every correction is a recorded edit that can be reviewed, changed or undone, so the finished record can always be traced back to the raw file.

Rating Curves, Built In

Fit the stage-discharge equation to your flow measurements, see how far each measurement sits from the curve, and check a new field reading against it before you leave the site. The curve in use feeds the discharge record directly.

Free to try: the rating curve check is also one of our free field tools.

Benchmark Surveys, Kept With the Station

Every level survey of a station's benchmarks and staff gauge sits in the station's own record: backsight, height of instrument, foresight and elevation, for each pass. The Processor follows every mark from one survey to the next and colours any that has moved, so a shifted benchmark or gauge stands out the day the survey is entered.

Free to try: the stand-alone benchmark survey sheet is also one of our free field tools.

Analysis Without Exporting to a Spreadsheet

Lay season on season, bring in rain, air temperature and barometric pressure from the nearest weather station, and see how the creek answered. The same record feeds the interactive pages our clients read on this website.

See the result: many of the client data pages are built from records processed here.

Drinking Water Quality, Processed the Same Way

The Hydro Processor is not only for creeks. We use it to process the City of Nelson's drinking water quality data, from water use and turbidity to UV disinfection and laboratory results, for the City's monthly Interior Health reporting and its annual drinking water report. Stray readings are selected on the chart, then removed, offset or corrected for drift, exactly as on a streamflow record.

Nothing is lost: an edit sits beside the readings it changes and can be switched off or removed. The readings themselves are never touched.