Finding A Seasonal Pattern

Finding A Seasonal Pattern Seasonal patterns determine where you should be fishing. Your most important asset for developing a seasonal pattern is...


Seasonal bass fishing

Rick Clunn has been a pro bass fisherman for over 40 years, and he knows that the very first step to catching fish is finding them.  Facing a large body of water can be daunting, especially if you have never been there before.  You may have acres of fishy-looking water in front of you: coves, sloughs, rip-rap, lay downs – the list of possible bass haunts is endless.  So how on earth do you decide where to start? If you just grab a bait and start pounding the bank, it could take forever to figure them out.  There’s a much better way. 

   Start off smart by thinking like a bass. Bass are simply animals, and they are ruled by instinct.  They do have incredible senses that help them to survive and thrive, but you can use that fact to your advantage.  Bass, like all animals (even us!), are happiest under certain conditions.  Comfortable temperatures, plenty of oxygen, and a steady food supply are all necessary for a bass to be living the good life.  These factors change with the seasons, so once you figure out where the bass winter and where they move for summer vacation, you’ll be well on your way to catching them.

   The seasonal pattern determines the area of the lake you should be fishing at a certain time of year to get the most bites. Your most important asset for developing a seasonal pattern is your head. Tackle simply complements your abilities. Recall past experiences and reapply them in the future. Keep records on your own fishing successes–you are the most reliable source of information that you have. Anything beyond yourself, says Clunn, is just “a degree of lies”.  In other words, think twice about using information that you hear from the guy on stage collecting the check. Is he telling the truth or is he misleading the competition? 

   Clunn says it took him a year of keeping notes for it to pay off for him. He won his first tournament with fifteen fish for 33 pounds. His notes included what area of the lake and what pattern won at that time of year on that kind of lake. Bass are the same no matter where you fish for them, he emphasizes. If you doubt that, remember that Clunn is the same guy who wins on gin-clear 200-foot-deep reservoirs like Lake Mead as well as in a foot of muddy water on the Mississippi River.

   When Clunn is making notes, he takes care not to mix unlike bodies of water. He keeps separate records for man-made lakes, rivers, tidal waters, etc. He sectionalizes lake maps: Area One includes the deepest, clearest, most stable areas. This would be the main lake area of large reservoirs and places like that.  Area Two encompasses the mid-range depths. Area Three is shallow water, usually where rivers and creeks feed into the lake. There may be several of each type of area on each body of water.

   Once Clunn has the entire body of water divided into the three kinds of areas, he begins to do the same thing for individual coves, marking out the deep parts as Area Ones, the mid-depths as Area Twos, and the shallowest areas as Threes. In his notes, he takes care to keep track of the area that fish were caught in. He uses his own experiences and even published tournament results from magazines for his notes. Don’t look for techniques, lures, etc., he says–just keep track of what area the fish were caught in, and the conditions at the time.

   Keeping these records will do two things for you: it will eliminate non-productive water and it will put you in the places where you have the best chance of getting the most bites. There is no point in fishing shallow, for example, if your notes tell you that for the past five years in these conditions most of the fish were caught at twenty-five feet.

   Even before you have a year or so of notes under your belt, there are ways to determine the best places to start looking for bass.  Simple bass biology will give you a boost.  Bass don’t move as often when the water temperature is below 50 or above 80.  During colder months they tend to move toward warmer water, so keep an eye on your graph as you’re exploring the water.  Even a difference of one or two degrees can be enough to draw bass or at least make them a little bit friskier.  Fortunately for us, bass seem to eat when they are hungry and even when they are not.  They have a tendency to eat whenever they see possible food.  According to the Southern Regional Aquaculture Center, bass apparently don’t learn quickly.  There is a large percentage of the bass population that will fall for the same lure time after time, and that is also good news for us.

   Most fishermen already know that a good rule of thumb is to look for bass shallow during the spawn, deeper in winter, and mid-range in summer.  But that can depend on where you live.  In the clear deep reservoirs out west, summer fishing often means deep-water fishing.  Wes McCracken is an avid bass fisherman in Arizona, and he says that he spends a lot of time looking at maps.  Some of his best spots are so subtle that a lot of people would totally overlook them.  In fact, one of his favorite spots is one that boats run right over every day on their way out from the launch ramp.  On the map, it simply looks like a tiny finger right out next to a river channel.  On a lake map with 10-foot contour intervals it is shown by a single looped line.  Since it is so far from shore, not many people notice it, much less stop to fish it.  That’s the kind of thing he looks for.  “Everybody finds the obvious stuff,” he explains.


Finding fish

When Wes first locates a new area that looks good, he first circles it and gets a 3-D picture of it fixed in his mind.  Boat control is crucial – he wants to know right where he is relative to the structure.  He finds some of his spots on the map first, and some he finds on the water and locates on the map later.  “Our paper maps aren’t that great, but they’re better than most people give them credit for,” he says.  He’s been known to spend hours motoring slowly around the lake, searching for structure just like a crappie fisherman.

   “In the summer the top of a good hump will be somewhere in the thermocline,” he says.  Wes has found that the dirtier the water is, the shallower the thermocline will be, which means that in very clear water it can be twenty-five feet deep or even more.

   What the heck is the thermocline?  Well, warm water is less dense than cold water so it will sit on top of the denser water with a thin layer called the thermocline separating them. Because the warm layer gets sun all day there isn’t much mixing of the two layers.  As summer progresses there is less and less oxygen below the thermocline because the stuff living down there is using it all up.  There isn’t much point in fishing below the thermocline most of the time, so it’s handy if you know how to find it.  It isn’t that difficult – just put your graph on manual and turn the sensitivity way up – over 90%.  You should be able to see the thermocline as a thin black line.  The best places to fish will be structure at that depth.

   You can find major seasonal structure at home, just by looking at the lake map.  Is there a finger that sticks out into deep water and intersects the thermocline level? Maybe there is a hump or even an old building or submerged road that is at the right depth.  I regularly fish a lake that has an annual vertical depth change of up to 100 feet.  Needless to say, figuring out the depth of structure can be difficult.  Two things make this a lot easier: me marking the map, and the county marking the ramp. When we launch the boat we make sure to check the ramp because there are metal plaques imbedded in the concrete that mark the water level.  Maximum pool is 1702, so if the water is lapping at the plaque that says 1635, we just do the math.  This wouldn’t do much good except that we have also marked our lake map.  Using differently colored Sharpies, we traced the contour lines at 20, 40, 60, and 80 feet.  So if the green line is 1640, we know that the current lake level is somewhere around there.  If the thermocline is at 20 feet, we just look for structure that is the next color down - things like humps, nice ridges, etc.

   In spring and fall you’ll want to focus on areas with nice flat shallow banks, and you can spot those by looking for areas where the contour lines are far apart.  To find great drop-offs for summer and winter, look for contour lines that are closer together, especially at the ends of flattish points and near old river and creek channels.  Be sure to use your map as a way of taking notes.  If you get into a particularly good bite, mark it on the map and give it a code number so you can make notes about the time of year and specific conditions in your fishing notebook. By the way, waterproof maps and notebooks are very handy for keeping detailed records.  Use pencil – a lot of ink will run when it gets wet.

   If you’re planning a trip to a body of water that is new to you, buy a good map of it as soon as you can.  By applying your seasonal knowledge of your home lake to the map of the new one, you should be able to get a very good idea of where to start fishing.

Grow your fishing skills and improve your angling effectiveness.
Subscribe to the free weekly BassResource newsletter.

How To Find Fish

Learn How To Find Fish