Rivermatics

USGS Streamgage 12211500

Nooksack River near Lynden, WA

Nooksack River near Lynden, WA is USGS streamgage 12211500 in Washington, monitoring river discharge in hydrologic subbasin 17110004. It sits on the Nooksack River, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 648 square miles. Discharge records at this site go back to 2022. Typical flow runs near 1,882.6 cfs in July and 3,052 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Washington
Drainage area
648 sq mi
Gauge elevation
37 ft
Subbasin (HUC-8)
17110004
Coordinates
48.92039, -122.48572
USGS site number
12211500
Records begin
2022-10-26 (4 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Nooksack River near Lynden, WA. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
758 845 908
712 830 925
676 807 911
645 791 909
642 794 932
607 776 928
598 772 939
599 781 974
585 780 991
561 771 984
544 760 977
543 757 984
547 763 1,008
552 775 1,041

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 4 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January — 2,887.4 —
February — 2,903.8 —
March — 3,003.2 —
April — 3,052 —
May — 3,671.6 —
June — 2,751 —
July — 1,882.6 —
August — 1,368.1 —
September — 1,267.5 —
October — 1,738.9 —
November — 3,991.7 —
December — 4,711.9 —

All values in cubic feet per second (cfs).

Common questions

When does Nooksack River near Lynden, WA normally run highest?
December, on the long-term record. The median daily flow that month is about 4,711.9 cfs, against 1,267.5 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
How long has Nooksack River near Lynden, WA been measured?
Discharge records at USGS site 12211500 begin in 2022, about 4 years, covering roughly 1,379 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Nooksack River near Lynden, WA?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Nooksack River near Lynden, WA?
The gauge sits at 48.92039, -122.48572, in Washington, in hydrologic subbasin 17110004, at an elevation of about 37 feet, draining roughly 648 square miles.
Can I use Nooksack River near Lynden, WA data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Nooksack River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Nooksack River in full.

Other gauges in this subbasin