North Fork Stillaguamish River near Arlington

NWS / NWPSSite ID: ARGW1active

NWS / NWPS ARGW1

North Fork Stillaguamish River • Snohomish • WA

Latest public reading1,320 cfsObserved May 13, 2026 at 10:15 PM CDT

TrendRisingForecast available

Data freshnessAgingPast the publishing interval but inside three times it. Still shown, flagged.Observation 84 minutes old

Flood contextNo source flood categoryFetched Timestamp unavailable

Stage and discharge

Observed source readings

Daily rollups and linked forecast values

Observed Forecast

Source-published thresholds where available

Action10.7 ftSource-backed threshold

Minor flood13 ftSource-backed threshold

Moderate flood14 ftSource-backed threshold

Major flood15 ftSource-backed threshold

Linked NWS/NWPS values

HGIFZ • stage1.46 ftValid Sep 3, 2026 at 1:00 PM CDT

status • stage1.46 ftValid Sep 3, 2026 at 1:00 PM CDT

HGIFZ • stage1.44 ftValid Sep 3, 2026 at 7:00 PM CDT

HGIFZ • stage1.43 ftValid Sep 4, 2026 at 1:00 AM CDT

HGIFZ • stage1.42 ftValid Sep 4, 2026 at 7:00 AM CDT

HGIFZ • stage1.41 ftValid Sep 4, 2026 at 1:00 PM CDT

flow

0.2 kcfs

Observed Sep 2, 2026 at 7:00 PM CDT

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

Readings and thresholds stay tied to USGS, NOAA/NWS, or source-backed records.

Observed and fetched timestamps are shown separately when the API returns them.

Unavailable forecasts, alerts, and thresholds are shown as unavailable states.