The fishes world evolves around the ability to feed, reproduce and survive. Cover, Structure, Temperature and Oxygen are the key components. Understanding the waters of their world will help you determine the type of water and where they live.
Cover & Structure:
These two terms are often confused as the same, but they are not. Cover is defined as a type of structure, natural or man made such as weeds, vegetation, fallen trees, docks, and swimming platforms. Structure is the physical characteristics of the water system; points, rock bars, islands, reefs, humps and breaklines. To understand the difference, if you completely drain the water only the structure will not move.
Breaklines & Edges
Anglers hearing or reading the phrases ”fish caught off the first break” or ”fish caught on the weed edge” may be confused as to their meaning. All active fish will relate to breaks or edges. Weed beds are like “aquatic neighborhoods” providing all stages of the food chain protection from predators or an ambush source for feeding. Breaklines (Breaks) are defined as an area of transition from one depth to another, one cover type to another, one water temperature to another, one water color to another, one substrate to another or any other transition that could influence fish behavior. Cover (weeds) next to a deep water breakline usually hold more fish than a shallow flat.
Humps and Reefs
Any mid lake underwater structure higher than the surrounding area can be classified as a hump or reef, they are among the most productive structures in lakes and flowages. Walleye and northern pike are attractive possibilities. If weeds, boulders and ledges are present, this structure will be even better, producing more game fish.
Points and Bars
Protruding shoreline points and bars offer a diversity in structure and are fish producers throughout the year. Key bottom components are, inside turns and drops offs. Add cover such as submergent and emergent weeds, drowned wood and you have a top attraction for all gamefish.
Wood and Weeds
Drowned wood, laydowns, brush plies composed of fir, pine, oak and maple typically lasts for years. By contrast birch and poplar provide cover for two to three years before decomposing to remnants. Drowned wood is terrific cover. The more complex the branches below the surface the better for fish. More branches more cover for a game fish to ambush prey. Finding “good” drowned wood means finding plenty of fish.
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