The individual radar station data are combined into a radar mosaic that completely covers the SJRWMD territory with an array of pixels. Each pixel is two kilometers by two kilometers in size, that is four square kilometers.

OneRain eliminates any discontinuities and ground clutter from the mosaic using proprietary geographic information systems (GIS) algorithms. OneRain combines the gauge and radar data to calculate a gauge-radar ratio and applies the ratio in a radar calibration algorithm to derive a gauge-adjusted rainfall dataset that maintains the spatial signature of the radar data while incorporating the volume estimates from the rain gauges.

The resulting gauge-adjusted radar rainfall data is delivered to the District and quality checked. After performing the quality checks, the gauge-adjusted radar rainfall data is uploaded to the District’s Oracle database.

These data are provisional and subject to change.