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NWS / NWPSSite ID: mayw1active

NWS / NWPS mayw1

Cowlitz River below Mayfield Dam

Cowlitz River • Lewis • WA

Latest public reading3.49 kcfsObserved Jun 16, 2026 at 9:00 PM CDT
TrendFallingForecast available
Data freshness StaleObservation 6642 minutes old
Flood contextNo source flood categoryFetched Timestamp unavailable

Stage and discharge

Observed source readings

Stage and discharge

Daily rollups and linked forecast values

Observed Forecast

Stage and discharge chart includes 4 observed points and 20 forecast points.

Line chart: Observed, Forecast012345672026-05-122026-06-222026-06-232026-06-252026-06-26
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

QRIFZ • stage3.5 kcfsValid Jun 21, 2026 at 1:00 PM CDT
QRIFZ • stage3.5 kcfsValid Jun 21, 2026 at 7:00 PM CDT
QRIFZ • stage3.5 kcfsValid Jun 22, 2026 at 1:00 AM CDT
QRIFZ • stage3.5 kcfsValid Jun 22, 2026 at 7:00 AM CDT
QRIFZ • stage3.5 kcfsValid Jun 22, 2026 at 1:00 PM CDT
QRIFZ • stage3.5 kcfsValid Jun 22, 2026 at 7:00 PM CDT

Observations

stage

3.49 kcfs

Observed Jun 16, 2026 at 7:00 PM CDT

stage

4.22 kcfs

Observed Jun 6, 2026 at 7:00 PM CDT

stage

4.21 kcfs

Observed May 30, 2026 at 7:00 PM CDT

stage

6.15 kcfs

Observed May 11, 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.