T.R | Title | User | Personal Name | Date | Lines |
---|
63.1 | Probably not | KIRK::PIERSON | | Tue Jun 16 1987 19:04 | 12 |
| Through where the Paper Store is??
I doubt it. I have an old map of maynard (it says Assabet Village,
when we were a suburb of Sudbury). It seems to show the river where
it is now. Maybe it was moved a little through where Elizabeth
Schnair's store is, but not much.
To the best of my knowledge, the river is where it was. The upper
end of the mill pond ties to a canal, which ties back to the river
across 117.
dave pierson
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63.2 | way back when | REGENT::MERRILL | Glyph, and the world glyphs with u,... | Wed Jul 08 1987 12:20 | 6 |
| Before Maynard was here the river flowed through the mill pond and
between where ML1 and ML5 are located! The channel through the
middle of town has two right angles that are part of the artifical
channel - remember that Nature hates sharp edges.
rmm
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63.3 | | JON::MORONEY | Welcome to the Machine | Wed Jul 08 1987 13:26 | 10 |
| re .2:
I don't think so. The channel to the millpond is much too small and straight
to be from the river.
Also, the natural forces of erosion tend to encourage sharp corners in rivers,
not discourage them. (check out a map of the lower Mississippi for an extreme
example of this)
-Mike
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63.4 | | PDVAX::P_DAVIS | Peter Davis (aka SARAH::P_DAVIS) | Thu Jul 09 1987 16:13 | 7 |
| Re/ .2:
Sorry, but river erosion does NOT encourage sharp corners. The
lower Mississippi, like many rivers its age, "meanders", which means
that it curves back and forth across relatively flat land. However,
those curves tend to be several miles across ... hardly what one
would call "sharp corners."
|
63.5 | of crooked rivers | JON::MORONEY | Welcome to the Machine | Thu Jul 09 1987 17:06 | 11 |
| re .4:
The motion of water moves faster along the outer edge of a curve than the
inner, this causes more erosion along the outer edge than the inner edge.
Whether this produces sharp(er) corners or meandering depends more on the
geography of the land than anything else, but this process discourages straight
rivers in any case. I know of several smaller rivers and streams with natural
right angle bends.
-Mike
|
63.6 | From the maps... | KIRK::PIERSON | | Fri Jul 10 1987 09:00 | 27 |
| re everybody_so_far
Without getting into theoretical hydraulics...
I checked a couple of maps.
Map 1:
From an atlas published in 1875. This shows what flows behind Main
St and comes out next the liquor store/travel agency as "The Assabet
River". What I think of as "the canal" leading from behind the
dam upstream from 117 to the "upper" end of the mill pond is shown
as "The Race".
Map 2:
Reaonably current topographical survey map.
This also shows the channel down town as "the Assabet". This course
has several small tributaries on the map, and meanders. I suspect
of it had been dug, it would be straight, to be shorter, and cheaper.
The channel from above the dam to the mill pond is shown as a dead straight
line.
I suspect the channel along the mill yard, and possibly above that,
has been tinkered with, and the corners may have been sharpened.
This might, forinstance, have allowed the Mill more usable land
area.
thanks
dwp
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