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NWS / NWPSSite ID: GVHA1active

NWS / NWPS GVHA1

Tennessee River above Guntersville Dam Headwater/Pool Elevation

Tennessee River • Marshall • AL

Latest public reading594.95 ftObserved Jul 21, 2026 at 12:00 PM CDT
TrendRisingForecast available
Data freshness StaleObservation 8481 minutes old
Flood contextContext unavailableFetched Timestamp unavailable

Stage and discharge

Observed source readings

Stage and discharge

Daily rollups and linked forecast values

Observed Forecast

Stage and discharge chart includes 10 observed points and 5 forecast points.

Line chart: Observed, Forecast01002003004005006002026-05-112026-06-012026-07-132026-07-282026-07-28
Data series

Flood-stage context

Source-published thresholds where available

Flood-stage context unavailable

Flood category levels are not published or not linked for this gauge.

Forecast

Linked NWS/NWPS values

HPIFF • stage594.79 ftValid Jul 27, 2026 at 12:00 PM CDT
HPIFF • stage594.79 ftValid Jul 27, 2026 at 6:00 PM CDT
HPIFF • stage594.8 ftValid Jul 28, 2026 at 12:00 AM CDT
HPIFF • stage594.8 ftValid Jul 28, 2026 at 6:00 AM CDT
HPIFF • stage594.8 ftValid Jul 28, 2026 at 12:00 PM CDT

Observations

stage

594.95 ft

Observed Jul 20, 2026 at 7:00 PM CDT

stage

594.81 ft

Observed Jul 12, 2026 at 7:00 PM CDT

stage

594.83 ft

Observed Jun 22, 2026 at 7:00 PM CDT

stage

594.96 ft

Observed Jun 8, 2026 at 7:00 PM CDT

stage

594.72 ft

Observed Jun 5, 2026 at 7:00 PM CDT

stage

594.43 ft

Observed May 31, 2026 at 7:00 PM CDT

stage

595.3 ft

Observed May 22, 2026 at 7:00 PM CDT

stage

594.6 ft

Observed May 12, 2026 at 7:00 PM CDT

stage

594.71 ft

Observed May 11, 2026 at 7:00 PM CDT

stage

594.63 ft

Observed May 10, 2026 at 7:00 PM CDT

Alerts

Alerts unavailable

Alerts are shown only when the API returns a source-backed match.

Official 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.