How much tide in a lake

Factual Questions
1

IIRC, I once read that the tides in Lake Superior were about two inches. Not enough to cause concern to a navigator, but measurable, nevertheless. Now, I have a cottage on an island on a rather large lake, but the water underneath the bridge never freezes. So now I’m wondering if it is tidal action that makes the water move underneath the bridge. What would be the tides in a large (say 20 miles x 10 miles) lake? 1mm?

2

Sounds like “current” to me. Most lakes, no matter the size, are just wide spots in a river. That wide spot narrows when you put something like an island in it. The narrower the passage (like the one between the island and shore) the swifter the current.

3

Sounds like “current” to me. Most lakes, no matter the size, are just wide spots in a river. That wide spot narrows when you put something like an island in it. The narrower the passage (like the one between the island and shore) the swifter the current.

4

Wind will probably have a greater effect on a small lake rather than tides. Wind can push one side of the lake up several inches, depending on the speed of the wind and the size an position of the lake compared to the surrounding landscape.

5

I opened this thinking that you were washing your clothes down by the shoreline …
Nevermind

A point in every direction is like no point at all

6

Does the water under the bridge move only when you drive over it ? Maybe the sunken piers are shaking. Incidently do they spread salt on the road or the bridge itself ? Maybe there is enough salt water running onto the ice that it is keeping it open.

7

This is a 70+ square mile lake. Several streams flow into it. Several bridges, no doubt, are effected by flow. The bridge in question is no where near one of those streams. As for the wind: I’ll agree that in the summer, a good stiff wind can push all the water towards one end, but in the winter, the ice (which covers 99% to a depth of 6+ inches) would separate the water and the wind.

8

The Cheapeake bay, is salt water, has tides of 1 - 1.5 feet easily and currents of several knots and yet some years freezes solid (the surface this is, underneath, the water does not freeze)