Side Imaging quiz: can you identify this?

  • Brian Klawitter
    Keymaster
    Minnesota/Wisconsin Mississippi River
    Posts: 59992
    August 14, 2009 at 1:33 pm #797448

    Electric plant discharge??

    I’m a Lowrance guy…so I have a handicap.

    absolute2ks
    Chippewa Falls, WI
    Posts: 674
    August 14, 2009 at 1:37 pm #797452

    Quote:

    How about overhanging tree branches protruding beneath the surface of the water???

    I am with you on this, Looks like tree branches diped in the water

    mrwalleye
    MN
    Posts: 974
    August 14, 2009 at 2:14 pm #797465

    the water intake at the power plant ?

    jhalfen
    Posts: 4179
    August 14, 2009 at 2:18 pm #797467

    Quote:

    Quote:

    How about overhanging tree branches protruding beneath the surface of the water???

    I am with you on this, Looks like tree branches diped in the water

    You guys are the closest so far….but it is not branches from above.

    icefishingelite
    Leinies WI
    Posts: 41
    August 14, 2009 at 3:09 pm #797486

    Is it the root structure of a tree? Wouldn’t happen to be a shoreline brushpile on the little lake?

    docfrigo
    Wisconsin
    Posts: 1564
    August 14, 2009 at 3:18 pm #797487

    UFO crash site–I am calling the sheriff’s office as we speak.
    I knew there was something strange about that lake.

    heck, I am a lowrance guy too.

    erick
    Grand Meadow, MN
    Posts: 3213
    August 14, 2009 at 3:37 pm #797492

    Reel weeds? Left in water over? (the ones you buy for ice fishing)

    Brian Klawitter
    Keymaster
    Minnesota/Wisconsin Mississippi River
    Posts: 59992
    August 14, 2009 at 4:13 pm #797503

    Erick’s discharge?

    KirtH
    Lakeville
    Posts: 4063
    August 14, 2009 at 4:17 pm #797506

    Quote:

    Erick’s discharge?

    Bk has a doctor ever asked you to lie down on couch and have you explain what color the sky is

    jhalfen
    Posts: 4179
    August 14, 2009 at 4:30 pm #797510

    I’ll announce the true identity of this object (or rather, should I say…these objects) at 1:00 pm today.

    One more clue: these are natural, rather than man-made, objects.

    Keep those guesses coming!

    dandorn
    M.I.N.N.E.S.O.T.A.
    Posts: 3207
    August 14, 2009 at 4:40 pm #797514

    A ginormous pile of LCX and LMS units??
    Upon further review I did pick up a few HDS units!

    whittsend
    Posts: 2389
    August 14, 2009 at 4:46 pm #797515

    Quote:

    A ginormous pile of LCX and LMS units??
    Upon further review I did pick up a few HDS units!

    whittsend
    Posts: 2389
    August 14, 2009 at 4:49 pm #797516

    How about a Beaver/Otter/muskrat house?

    Or maybe something like a small clump of cattails -(although doubtful)

    Mike

    whittsend
    Posts: 2389
    August 14, 2009 at 4:55 pm #797519


    Winner gets a free 1197??????

    whittsend
    Posts: 2389
    August 14, 2009 at 5:32 pm #797525

    1. Looks like a good return, so I would say its wood-based. Especially since you said it was not man-made.
    2. If the water dropped a foot and the result would be a much different image, I assume that the structure is only in the top 1-3 feet of the water colum in your SI.
    3. You can also sort of see under or through the structure to the (sand?) bank behind it. Supports the idea that the structure is mainly in the upper foot or two of the water column, and not really all the way from top to bottom.
    4. you said it wasn’t branches hanging into the water from above, but how about going through the water from the side.

    Possibly a tree growing horizontal with the water surface. When the water is high, the main couple of branches are submerged (barely), which is what you see in your image. When the water is low, they are out of the water and might not even register on the SI assuming they are completely above the water surface. Something like a willow or other flood tolerating tree growing at an unusual angle with respect to horizontal…

    Although I could be waaaaay off…

    Mike

    jhalfen
    Posts: 4179
    August 14, 2009 at 6:07 pm #797535

    The correct answer is….

    submerged lily pads.

    The stalks on the pads must have developed during normal water levels, and with the constant up and down of summer water levels (caused by local air conditioning power demands), there must be some periods during which the water is high enough to cover the pads. The pads were about 6″ under water when I collected this image.

    A lot of guys have picked up on the brightness of the returns and suspected something hard, especially wood. I was surprised as well to see that I was imaging something soft. My best guess is that the waxy coating on the surface of the pads is really good at scattering the sonar waves, making the return look like it’s coming from a harder than expected object.

    Thanks for playing everyone!

    whittsend
    Posts: 2389
    August 14, 2009 at 6:10 pm #797537

    But I was going to say that!!! (It actually did cross my mind, but I discarded the thought… Looked like a much harder return!!)

    Fun… Can we play again??

    jhalfen
    Posts: 4179
    August 14, 2009 at 6:12 pm #797538

    We should have a side game for Wissota guys to guess the location where the image was collected.

    2Ks doesn’t get to play…I think I may have told him on Tuesday night.

    whittsend
    Posts: 2389
    August 14, 2009 at 6:42 pm #797545

    Oneil Creek?

    I have to confess that I have my usual haunts and am not familiar with too many other places that are “off the beaten path”… I’m assuming somewhere in a creek arm somewhere?

    absolute2ks
    Chippewa Falls, WI
    Posts: 674
    August 14, 2009 at 6:50 pm #797547

    Quote:

    We should have a side game for Wissota guys to guess the location where the image was collected.

    2Ks doesn’t get to play…I think I may have told him on Tuesday night.

    aw man!!!!

    this can’t be too tough not a lot of pads in wissota

    jhalfen
    Posts: 4179
    August 14, 2009 at 7:01 pm #797551

    I thought I told you….didn’t I??

    whittsend
    Posts: 2389
    August 14, 2009 at 7:10 pm #797553

    I know I’ve seen pads before in that little southern offshoot off of the little lake…

    absolute2ks
    Chippewa Falls, WI
    Posts: 674
    August 14, 2009 at 9:56 pm #797588

    Quote:

    I thought I told you….didn’t I??

    You probly did but I must not have listened, is this where you got the green one, but I dont know where you got that either

    bigcrappie
    Blaine
    Posts: 4330
    August 15, 2009 at 3:13 am #797622

    You need to fish some lakes here to Minnesotaso and do some lakes we all know, it is not fair that Wisconson gets all the fun…….

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