Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
RoyBoy1256

how do you calculate depth from shore?

3 posts in this topic

I was wondering how you would guesstimate the depth of water when you cast out a slip bobber rig? I thought about putting 4-5 ft of line, set the bobber there, then add a clip weight to the jig, throw it out and see if I could still see the bobber. I know they have those little green conraptions you can put on your line, then read the depth off your wristwatch they give you, but want to keep it simple. Anyone have an idea of how to cast out the slip bobber and calculate the depth? Thx for any ideas...

Share this post


Link to post
Share on other sites

First of all, welcome to FM. We look forward to future posts from you.

As for calculating the depth from shore, I think your first idea is right on track.

Share this post


Link to post
Share on other sites

take a really heavy jig, cast it out. take your best guess to the distance that you threw it, call that distance "y" after is sinks, and tighten the line against the jig on the bottom. you can measure the height of your rod/line above the water. measure the angle in your line with a protractor. the vertical distance down to the jig will be sin (angle of your line down from the horizontal) = the vertical jig depth divided by the length of line that you casted out less the height of your rod above the surface of the water. x = vertical distance down, y = the hypotonuse and theta = the angle. sin (theta) = (x/y)- line height above the water. or, if you dont have your scientific calculator and protractor with you, you could just do what you mentioned first. tongue.gif

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • Stick in Mud
      Thanks for the ice report, Sculpin.  With the weather forecasted for the upcoming week, I'm sure I'll be up there next weekend, hopefully walking out from the northwest side.   van, yeah, I hear you.  I've been up to LOW a few times, and it is very fun to know there's the chance of catching a monster....but driving all that way for a bucket full of 12'' fish?  Not my cup of tea. I'll save the money and buy three dozen T-bones to make it through the winter. I'm sure people who know the lake better than I do have done better on the weekends I'm up there, but the reports at the resort we used were pretty similar.    I like the northwest side on ML because it's where we've been for almost 20 years, but it also has close access to sand, rocks, whatever weeds remain, mud flats, transitions, etc. The only thing we don't have up there is extensive gravel.
    • BassThumb.
      I'm curious to see how this works out. Do you plan to keep the battery warm while not is use on the water? 
    • Vitreus
      How much ice??????
    • Vitreus
      Picked up a couple of these (jigging rap with wings!):  
    • eyeguy 54
      didnt need hair dryer,  it went back to normal on it's own. paint chipped also.  nice idea the flat tip, just not for me I guess.