Classification: no_prediction Confidence: Event provides no calibration information due to absence of rainfall triggers, but highlights need for data quality monitoring
River rose 0.44 ft with sharp hydrograph shape despite zero rainfall detected in all bands and at gauge, indicating possible data quality issues or non-rainfall causes.
| Metric | Predicted | Actual | Error |
|---|---|---|---|
| Peak height | N/A | 3.73 ft | N/A |
| Total rise | — | 0.44 ft | — |
| Band | Precip | Predicted Rise | Intensity | Moisture |
|---|---|---|---|---|
This event presents a puzzling scenario where the gauge recorded a 0.44 ft rise with a sharp hydrograph shape starting at midnight, but both the QPE system and the gauge precipitation sensor recorded zero rainfall across all bands and timeframes. The sharp rise pattern typically indicates near-gauge rainfall contribution, yet Band 1 shows no precipitation. This could indicate either QPE system failure, gauge malfunction, or non-rainfall causes such as upstream dam releases, ice jams, or debris blockages. The WET antecedent moisture conditions (1.925 inches over 7 days) suggest the watershed was primed for response, but without any triggering precipitation, this rise is anomalous. Since no prediction was generated due to lack of rainfall triggers, there is no model performance to evaluate. However, this event highlights the importance of data quality checks and the need to distinguish between rainfall-driven and non-rainfall-driven flow changes.
No changes made.
Event provides no calibration information due to absence of rainfall triggers, but highlights need for data quality monitoring