Stage and discharge
Hourly readings and linked forecast values
Observed Forecast
Stage and discharge chart includes 2 observed points and 21 forecast points.
Flood-stage context
Source-published thresholds where available
Action14 ftSource-backed threshold
Minor flood19 ftSource-backed threshold
Moderate flood25 ftSource-backed threshold
Major flood30 ftSource-backed threshold
Forecast
Linked NWS/NWPS values
status • stage21.2 ftValid Sep 3, 2026 at 7:00 AM CDT
HGIFF • stage21.2 ftValid Sep 3, 2026 at 7:00 AM CDT
HGIFF • stage16.8 ftValid Sep 3, 2026 at 1:00 PM CDT
HGIFF • stage11.9 ftValid Sep 3, 2026 at 7:00 PM CDT
HGIFF • stage9.6 ftValid Sep 4, 2026 at 1:00 AM CDT
HGIFF • stage8 ftValid Sep 4, 2026 at 7:00 AM CDT
Observations
Stage
22.8 ft
Observed Sep 3, 2026 at 2:30 AM CDT
Stage
2.25 ft
Observed Aug 28, 2026 at 3:30 PM CDT
Alerts
Flood Warning
Flood Warning issued September 2 at 10:35AM CDT until September 3 at 4:00PM CDT by NWS Houston/Galveston TX
Effective Sep 2, 2026 at 10:35 AM CDT - Expires Sep 3, 2026 at 4:00 PM CDT
Open official alertFlood Warning
Flood Warning issued September 3 at 2:30AM CDT until September 3 at 10:00PM CDT by NWS Houston/Galveston TX
Effective Sep 3, 2026 at 2:30 AM CDT - Expires Sep 3, 2026 at 10:00 PM CDT
Open official alertFlood Warning
Flood Warning issued September 2 at 11:22PM CDT until September 4 at 9:31AM CDT by NWS Houston/Galveston TX
Effective Sep 2, 2026 at 11:22 PM CDT - Expires Sep 4, 2026 at 9:31 AM CDT
Open official alertOfficial public sources
Readings and thresholds stay tied to USGS, NOAA/NWS, or source-backed records.
Source freshness
Observed and fetched timestamps are shown separately when the API returns them.
Transparent methodology
Unavailable forecasts, alerts, and thresholds are shown as unavailable states.