PNW Flood Watch - Dec 8-12, 2025

Looks like a number of PNW river gauges are going to blow past historical flood levels. And even those that aren't are all at flood or major flood stage.
 
Anyone know how far back the recordkeeping goes for the Skagit and Snohomish gauge level records that are in danger of being broken? Trying to get a sense of where this potential flooding really stacks up historically against some of the anecdotes being shared here.

Clicking the Snohomish river gauge USGS info, looks like daily gauge height data goes back to 1998, and continuous monitoring starts in 2015. But I can’t tell if there’s info further back or when the existing record height was set.

Thanks!
 
There's actually patches of blue sky right now here in Vancouver. It hasn't rained all morning. The Cowlitz has dropped from 23,000 CFS to 14,000.
 
Definitely going to be landslide activity this winter. More heavy rain coming next week. So much for the drought.
 
Anyone know how far back the recordkeeping goes for the Skagit and Snohomish gauge level records that are in danger of being broken? Trying to get a sense of where this potential flooding really stacks up historically against some of the anecdotes being shared here.

Clicking the Snohomish river gauge USGS info, looks like daily gauge height data goes back to 1998, and continuous monitoring starts in 2015. But I can’t tell if there’s info further back or when the existing record height was set.

Thanks!
The Skykomish goes back to 1929 per the header on the NW River Forecast page. I would imagine the snoho is the same or similar.
 
Lower spawning humpkins are actually an introduced strain from bc and cut white. Nice to see they are making good use of the pilchuck.
View attachment 174397

Do pumpkin fry out migrate immediately like pinks and chums?

Anyone lose a blue kayak near Hwy 2?
SF
IMG_4943.jpeg
 
Do Humpkin fry out migrate immediately like pinks and chums?
View attachment 174398
They spawn in the late fall and early winter, then out migrate right after the first big rains.
There's still some late run spawners near me, but I can see them headed for the creek, and out into the bay.
:)
 
Definitely going to be landslide activity this winter. More heavy rain coming next week. So much for the drought.

Good call for the coast. Unfortunately for us a bit east it was 60 degrees on the mountain this morning. Our "snowpack" is going backwards... If we don't get a big spring its going to get really dry out here this summer. Not great for our anadromous friends.
 
Anyone know how far back the recordkeeping goes for the Skagit and Snohomish gauge level records that are in danger of being broken? Trying to get a sense of where this potential flooding really stacks up historically against some of the anecdotes being shared here.

Clicking the Snohomish river gauge USGS info, looks like daily gauge height data goes back to 1998, and continuous monitoring starts in 2015. But I can’t tell if there’s info further back or when the existing record height was set.

Thanks!
According to USGS peak flow records -
The station on the Snohomish near Monroe goes back to the 1964 water year (beginning in October of 1963)
The station on the Snoqualmie near Carnation started in 1941
The two stations on the Sauk also began in 1929.
The Skagit near Concrete began in 1925

On the Skagit there are some estimates of peak floods at concrete significantly larger than the1995 estimate of 160,000 cfs.
There are 3 estimates between 1888 and 2021 between 210,000 and 265,000 cfs.
There is an estimate from 1856 of a peak flood of 340,000 cfs and one from 1815 where there was a gigantic event of 510,000 CFS (state height of 69.30 9established from flood scars on trees above the river.

Curt
 
Good call for the coast. Unfortunately for us a bit east it was 60 degrees on the mountain this morning. Our "snowpack" is going backwards... If we don't get a big spring its going to get really dry out here this summer. Not great for our anadromous friends.
A moderate La Nina is forming, so the cold and snow is coming.
 
Sky is currently at ~107K and seems to be close to peaking based on the hydrograph. Looks like it should peak roughly ~1' below the '06 peak.
 
A little spicy on the Sol DUc but seems like the north coast didn't get hit as hard this time. Calawah already crested at 13.9K and it looks like the Sol Duc will crest soon at less than 28'.

I've been watching the camera on the back deck and talking to my neighbor to make sure I didn't need to make a mid-week flood mitigation run but no worries this time. Back in Nov of '21, it got high enough to come up through our basement which was a bummer for me being up all night with a bilge pump and a bucket trying to prevent our furnace from getting swamped (have an electric pump now, lesson learned).

Right now:IMG_0139.PNG

"Good fishing" levels in winter about 20' on the gauge.

IMG_0043.jpeg

November '21 - in the photo above, the smallest of the three trees in a row in the middle of the frame is the same tree in the video below for reference. Calawah was over 40K and the sol Duc was at 33'.

 
G71n1kraMAEPTir.jpeg

Full on run now. Humpkin kelts headed back to sea after spawning.
Nature at it finest !!!!
 
The latest Skagit flood level update (4:15{M) is getting very scary. The forecast is for levels 4.89 feet higher at Mt. Vernon Friday morning than the modern-day record.

Perhaps even more worrisome is the length of time the river is expected to remove at or above major flood levels. It looks like the model has the river maintaining those levels for about 2 days. The concern is that with that kind of pressure that there could be some dike failures. Hope the heck the models are wrong.

Those in the Skagit Valley and elsewhere are in my thoughts.

Curt
 
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