Barnawa Catchment · Kaduna, Nigeria

Early Warning System

Historical replay · 1990–2025
36-YR DAILY DISCHARGE RECORD THRESHOLDS · GUMBEL EV-I, R² = -
⚠ Historical replay tool, not a live feed. This board replays the 1990–2025 daily streamflow record against thresholds derived from a Gumbel frequency analysis of the same record. Scrub the timeline or jump to a recorded episode below to see how the system would have classified it. Wiring a live/forecast feed (e.g. GEOGloWS) in place of the replay data is the natural next step toward an operational system.

Live conditions

-
-
-m³/s
NORMAL
Flow within the normal range for this catchment.
-
Threshold-exceedance episodes recorded, 1990–2025 (advisory level or higher)
-
Episode(s) reaching Warning or Severe level, see event log for dates
Timeline replay
1990-01-012025-12-31
Daily discharge, 1990–2025 Hover to inspect · drag the timeline above to move the cursor
Frequency analysis Annual max. vs. Gumbel fit
LevelReturn periodDischarge
Event log, all recorded episodes Click a row to move the replay there
Peak dateLevelPeak dischargeDuration

Rainfall-to-peak lead time

Two recorded flood seasons, rainfall trigger vs. discharge response