How to Find Brush in Lake Depth Finders

How to Find Brush in Lake Depth Finders
Depth and fish finders are electronic tools designed to enhance your day on the water: They maximize fish catches as well as help to avoid obstacles under the surface of the water. Reading depth finders requires a learning curve. Learning the equipment helps prevent snags, prop strikes, wasted time or accidents while fishing and boating. Depth finders come in a variety of styles, some with color screens and some with grey scale. Most units have several common features.


Difficulty: Moderately Easy

Power Up/Default Display Screen

Things You’ll Need:
  • Fish Finder
  • Boat
Step 1
Locate and press the power button for your depth finder. Wait for the default display screen to come up on the unit. Check the screen to make sure it is receiving the transducer signal (thesonar wave emitting device attached to the bottom of the boat).
Step 2
Read the screen display numbers. Depth numbers are typically found under the flat black lines on the bottom of the display screen. This number indicates the water depth.
Step 3
Look at the display screen bottom for skinny black lines. This indicates the lake bottom is hard and flat. Fat black lines indicate mud or soft sediment on the lake bottom. Brush will appear as pixelated clumps on the bottom of the display screen.
Step 4
Locate the depth number and the location of the pixelated clumps that indicate brush and determine if you are at a safe distance from the brush. Use this information to determine how far to drop your fishing line, so you may avoid snags. Press the Zoom function (almost all depth finders have a Zoom) to magnify the brush reading.

Tips & Warnings

Print and laminate a copy of the Legend from your depth finder's user manual and keep it next to the display unit.

Article Written By Eric Cedric

A former Alaskan of 20 years, Eric Cedric now resides in California. He's published in "Outside" and "Backpacker" and has written a book on life in small-town Alaska, "North by Southeast." Cedric was a professional mountain guide and backcountry expedition leader for 18 years. He worked in Russia, Iceland, Greece, Turkey and Belize. Cedric attended Syracuse University and is a private pilot.

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