Rivermatics

USGS Streamgage 12200500

Skagit River near Mount Vernon, WA

Skagit River near Mount Vernon, WA is USGS streamgage 12200500 in Washington, monitoring river discharge in hydrologic subbasin 17110007. It sits on the Skagit River, alongside 11 other gauges Rivermatics tracks on the same river. It drains a watershed of about 3,093 square miles. Discharge records at this site go back to 1906. Typical flow runs near 17,441.9 cfs in July and 14,133.3 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead, alongside daily high and low water-temperature forecasts.

View live conditions & forecast →

Gauge details

State
Washington
Drainage area
3,093 sq mi
Gauge elevation
19 ft
Subbasin (HUC-8)
17110007
Coordinates
48.44483, -122.33544
USGS site number
12200500
Records begin
1906-11-01 (120 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Skagit River near Mount Vernon, 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
7,885 8,575 9,215
7,365 8,344 9,453
7,137 8,250 9,671
7,030 8,217 9,813
6,835 8,084 9,742
6,572 7,875 9,632
6,397 7,717 9,571
6,232 7,587 9,603
6,142 7,515 9,618
6,052 7,416 9,558
6,025 7,381 9,557
5,918 7,254 9,315
5,805 7,138 9,215
5,762 7,064 9,132

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 86 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 9,636.8 16,329 29,138.7
February 9,230.7 14,734.5 25,896.6
March 8,670 13,451.6 21,448.4
April 9,692.7 14,133.3 21,210
May 12,435.5 18,664.5 30,445.2
June 13,896.7 22,280 35,846.7
July 10,418.1 17,441.9 31,661.3
August 7,334.2 10,274.8 17,329
September 6,004.3 8,302 13,930
October 5,791.9 10,280.3 22,061.3
November 8,442 15,383.3 34,300
December 9,546.8 15,645.2 31,083.9

All values in cubic feet per second (cfs).

Common questions

When does Skagit River near Mount Vernon, WA normally run highest?
June, on the long-term record. The median daily flow that month is about 22,280 cfs, against 8,302 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Skagit River near Mount Vernon, WA?
It depends on the month. In January, half of days historically fall near 16,329 cfs, with the middle 80% of days between 9,636.8 and 29,138.7 cfs. The month-by-month table on this page gives the full range.
How long has Skagit River near Mount Vernon, WA been measured?
Discharge records at USGS site 12200500 begin in 1906, about 120 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Skagit River near Mount Vernon, 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. A companion model forecasts each day's water-temperature high and low. 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 Skagit River near Mount Vernon, WA?
The gauge sits at 48.44483, -122.33544, in Washington, in hydrologic subbasin 17110007, at an elevation of about 19 feet, draining roughly 3,093 square miles.
Can I use Skagit River near Mount Vernon, 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 Skagit River

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

Other gauges in this subbasin