Holy Water Levels, Again. - Page 2 - SailNet Community
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post #11 of 39 Old 05-16-2019
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Re: Holy Water Levels, Again.

Agree Capt. I had to nearly use a ladder once to board..and I'm quite spry..was simply too high.
The only benefit..is that I'm less concerned about my marina dredging the channel for me...but honestly...I say that facetiously..
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post #12 of 39 Old 05-16-2019
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Re: Holy Water Levels, Again.

Here’s one site I like. Tons of GL data going back as long as data has been collected for the area. And easy to view various time segments.

https://www.glerl.noaa.gov/data/dash...GLD_HTML5.html
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post #13 of 39 Old 05-16-2019
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Re: Holy Water Levels, Again.

Only half of the New York State Canal System will be opening up tomorrow morning at 7, due to the high waters: Notices and Alerts - New York State Canals
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post #14 of 39 Old 05-17-2019
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Re: Holy Water Levels, Again.

Quote:
Originally Posted by Arcb View Post
Hmm. The dams are old, the flooding seems to be fairly new, at least on its current scale.
Think about how old the dams are, compared to the age of the Great Lakes. They really are a very, very contemporary alterations of the geography. Humans think of old, as it relates to our puny average lifespans, compared to the planet itself. No doubt, the development of surrounding wetlands is an impact too.

I don't fully understand the engineering, but I read there is human decisioning at play with the dam systems along the entire lake eco system, certainly not just Canada. I highly suspect that nature would be doing a much better job of sorting this out, if we weren't intentionally holding water back.

No doubt there are entire towns built in the way of where the water would naturally go, if the dams weren't there. Perhaps the problem is a naturally human one. We build stuff thinking the planet is going to stay just the way we found it. The form we found it in will not be perpetual, no matter what we do.
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post #15 of 39 Old 05-17-2019
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Re: Holy Water Levels, Again.

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Nice, what site do the numbers come off?
US Army Corps of Engineers:
https://www.lre.usace.army.mil/Missi...-Water-Levels/
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post #16 of 39 Old 05-17-2019
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Re: Holy Water Levels, Again.

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Think about how old the dams are, compared to the age of the Great Lakes. They really are a very, very contemporary alterations of the geography. Humans think of old, as it relates to our puny average lifespans, compared to the planet itself. No doubt, the development of surrounding wetlands is an impact too.

I don't fully understand the engineering, but I read there is human decisioning at play with the dam systems along the entire lake eco system, certainly not just Canada. I highly suspect that nature would be doing a much better job of sorting this out, if we weren't intentionally holding water back.

No doubt there are entire towns built in the way of where the water would naturally go, if the dams weren't there. Perhaps the problem is a naturally human one. We build stuff thinking the planet is going to stay just the way we found it. The form we found it in will not be perpetual, no matter what we do.
I totally agree. Nowadays we control the flow of water for the simple reason that if we didn't, the downriver cities that were built to the modern days water edge would flood. The Great Lakes Basin is a great example of just this, if they release more water, then Montreal would have some serious flooding, and guess where many politicians have to work..but being a large city, it would be devastating to the city to flood once again as it did in 2017.
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post #17 of 39 Old 05-17-2019
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Re: Holy Water Levels, Again.

Up north we'll have access to more coves but I suspect most of our beaches will be underwater for the season.
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post #18 of 39 Old 05-17-2019 Thread Starter
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Re: Holy Water Levels, Again.

I am in Montreal quite a bit. It's an interesting spot, being the highest naturally navigable spot on the St Lawrence system. It exists as it is because it was the furthest wooden sailing ships could reach into the great lakes system due to the Lachine Rapids, which is really what the lower locks on the seaway are circumventing. It's been permanently inhabited since 1642 and its first recorded flood was in December, 1642.

The area of Montreal that has been getting the worst of the flooding in recent years isn't really on the St Lawrence River. It's on the Ottawa River.

Not sure if I have a point, except that it's all complicated.
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post #19 of 39 Old 05-17-2019
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Re: Holy Water Levels, Again.

gotta love it. snow melts waters s rise folks living in homes built in flood plains flood... all normal. lotta snow? lotta flood. enjoy spring. at least ye has water.


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post #20 of 39 Old 05-17-2019 Thread Starter
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Re: Holy Water Levels, Again.

I like these profile maps of the great lakes. This one shows the dams, which is kind of neat, there really aren't that many on the Great Lakes system itself, most are in tributaries leading into the St Lawrence system, like the Ottawa river.

The folks who were saying the dams are having an impact on the Thousand Islands area may have a point. The first dam after Lake Ontario, Iroquois, is basically right at the east end of the 1000 Islands and is a water level control dam.

However, there really aren't any dams that should effect water levels on Erie, Michigan or Huron. The big drop is Niagara Falls, the Niagara River isn't really dammed in the conventional sense. Basically there are sluice ways that divert water from the upper Niagara River around Niagara Falls to a big man made reservoir and then down through generating turbines, but this system is a diversion, its not really impeding the flow of the Niagara river or the lakes above it.

I added the red dot using paint to illustrate roughly where Montreal is on the system.
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Last edited by Arcb; 05-17-2019 at 01:57 PM.
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