Read a gauge page

Everyone; the forecast needs an unlocked gauge

A gauge page is one scrolling page. From the top:

Readings. Latest flow, Forecast peak flow, Latest level, Forecast peak level (where the gauge has a level forecast) and Latest water temperature, each with its time. The ⓘ beside a peak gives the forecast's issue time.
The chart. Observed daily means, the last 48 hours of readings, the forecast, and the shaded Normal range. The default view is the last 7 days plus the forecast. Scroll or pinch to zoom, drag to pan, Shift+drag to zoom to a box, and Reset zoom to return.
Chart controls. 6-hourly | Daily switches the forecast between 6-hour blocks and daily means. Year overlay draws any year back to 1996. Past forecasts draws earlier issues as dashed purple lines, so you can see how the forecast has moved. Show all thresholdsdraws your organisation's lines.
Rain, snow and wetness. Observed and forecast rain, snowpack and how wet the basin is.
Basin weather forecast. 10 days of temperature and precipitation averaged over the basin, with Forecast flow (m³/s) and Forecast level (m) rows.

The Grand River at Galt gauge page: latest and forecast peak flow and level, year overlay and past forecasts controls, and the basin weather chart — The top of a gauge page: readings, forecast peaks and the chart controls.

The basin weather forecast table with temperature, precipitation, forecast flow and forecast level rows for ten days — The basin weather forecast, with forecast flow and level rows.

Model card →at the top shows how well this gauge's model scored on years it was not fitted to, and its limits. Read it before relying on a gauge for decisions. A Commercial organisation sees the full card, with NSE, percent bias and year-by-year results.

The model card for Grand River at Galt: calibration and validation scores and the level forecast's rating error — A model card: scores on the calibration and validation years, and the level forecast's error.

A chip such as 🔒 Unlockbeside the forecast peak means your organisation hasn't unlocked this gauge yet. See chapter 7.