Fishing with Rod Discussion Forum

Fishing in British Columbia => General Discussion => Topic started by: clarki on October 24, 2024, 09:08:07 AM

Title: Chilliwack River hydrometric graph
Post by: clarki on October 24, 2024, 09:08:07 AM
Did last weekend’s atmospheric river throw off the calibration of the hydrometric station again, similar to 2021?

The graph is showing the river has nearly dropped back to its pre-flood levels. https://wateroffice.ec.gc.ca/report/real_time_e.html?stn=08MH001

Yet, from my perspective, the river seems to be much higher than it should be for 2.3 m and still seems higher than it was last week.

Or, is my perspective…off?

Title: Re: Chilliwack River hydrometric graph
Post by: Old Blue on October 24, 2024, 09:30:37 AM
Could be just sediment that moved downstream to where the station is messing up the numbers.
Title: Re: Chilliwack River hydrometric graph
Post by: clarki on October 24, 2024, 09:36:59 AM
Could be just sediment that moved downstream to where the station is messing up the numbers.

I think so too; that’s also what happened in 2021.

I’m just curious if other anglers on the river are experiencing what I am.. that the water seems much higher than it was last week, while the graph says the levels are now nearly identical .
Title: Re: Chilliwack River hydrometric graph
Post by: Old Blue on October 24, 2024, 10:18:59 AM
With the Fraser being at a higher level but also with the tide situation this week the tributaries flow rate gets "backed up" which might account for why it seems higher as well.
Have a look at the tides from this past weekend until this coming Sunday.  This week I'd imagine the bulk of all salmon in most systems will show up with the high tides.
Title: Re: Chilliwack River hydrometric graph
Post by: clarki on October 24, 2024, 10:20:41 AM
With the Fraser being at a higher level but also with the tide situation this week the tributaries flow rate gets "backed up" which might account for why it seems higher as well.
Have a look at the tides from this past weekend until this coming Sunday.  This week I'd imagine the bulk of all salmon in most systems will show up with the high tides.

No, I don’t think tides account for it. The area I’m observing is above any tidal influence
Title: Re: Chilliwack River hydrometric graph
Post by: bigsnag on October 24, 2024, 01:26:31 PM
According to the graph, the water right now is only 6" higher than last week. The truth is, where I was fishing, it's more like a foot and and a half higher compare with before the "atmospheric river"
Title: Re: Chilliwack River hydrometric graph
Post by: clarki on October 24, 2024, 03:09:40 PM
That's my observation too. Thanks BS.

Thus goes back to a discussion thread a few years ago https://www.fishingwithrod.com/yabbse/index.php?topic=44398.0
Title: Re: Chilliwack River hydrometric graph
Post by: sockeyed on October 24, 2024, 03:53:20 PM
I had to move spots this morning as the water was way higher than expected.
Title: Re: Chilliwack River hydrometric graph
Post by: bigsnag on October 24, 2024, 05:07:23 PM
So the change now is the opposite.
Back then if the graph read high it was actually lower.
Now, with the new change, if the graph reads low it is actually still high.
Title: Re: Chilliwack River hydrometric graph
Post by: sugartooth on October 24, 2024, 08:00:56 PM
If you compare the pre high water levels on the graph above Sleese creek to those of the graph at vedder crossing you can see they haven’t come down the same. So I believe you are correct.  I was actually thinking the same thing today while fishing the river.


Edit.

Above Slesse creek
Oct. 24/2024 -  1.200m
Aug 24/2024 -  1.200m

At vedder crossing
Oct. 24/2024-  2.256m
Aug. 24/2024 - 2.407m