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Pre-Spawn, Spawn and Post-Spawn Largemouth Bass are always a hot topic for committed Bass anglers. In the Pacific Northwest, the topic can almost drive you to distraction. That is because our changeable weather and differing waters can mean that the Spawn runs from early April to July or even later, and not just in separate bodies of water…..but even on the same lake! Different sides of the lake warm at different times, and different ends of reservoirs reach different temperatures as well. Add to that coldwater springs in some lakes, and runoff from warmwater creeks in others – even the pumping of warm water by landowners from flooded fields into ponds or rivers – and you can get quite a wide-ranging spectrum of temperatures.
The magic temperature that forces Bass into reproductive mode is generally agreed to be 60 degrees farenheight, but fish can spawn in slightly colder or slightly warmer water than that. Once the right temperature is reached, the urge of nature becomes irresistable and Bass begin spawning.
In the same way that a Spring Chinook Salmon is driven by its genetic makeup to run up the Columbia from the ocean, seeking out its home spawning tributary and completing its life cycle, Largemouth Bass must find the right spot, build their nest and spawn when the temperature reaches that magic spot on the thermometer. Luckily for us Bass fishermen, this does not end the fish's life cycle. It just starts new ones for another generation of Bass that manage to survive and beat nature's harsh odds to adulthood.
This April started out cold and is warming only slowly. As I've mentioned before though, watch your thermometer and weather patterns closely. Warm weather and warm rains can cause a sudden jump in temperature. It pays to have a way to check the temperature for yourself. Your boat's fish finder will tell you the surface temperature. You can also buy a castable glass thermometer that can measure either the surface or deepwater temperatures. They can be found at quality sporting goods stores such as Sportsman's Warehouse/UFA or flyshops. Experiment with your thermometer and you'll find quite a gradient from top to bottom at times. This may come in handy as we progress into Summer. More on that in later months.
Water temperatures are ranging from 46 degrees in the Columbia in warmer areas, to 53 and higher in various lakes and reservoirs. This means that most Bass will still be in Pre-Spawn mode. The Pre-Spawn tactics and baits discussed in last month's column will work just fine, but because we are nearing spawning temperatures – especially for bigger fish – it is good to start including a few baits for the Spawn in your arsenal.
Besides those spinnerbaits and jig-and-grubs for Pre-Spawn, think about soft plastics like lizards, worms and tube baits for subtle presentations in reedbeds, weedbeds and likely spawning areas. Texas rigs, skin-hooked will prove more manageable than Carolina rigs at this time. Dropshotting with small, subtle amounts of lead will work as well.
You may well find spawning beds that appear as well-defined light spots or dark spots (This depends on the composition of the bottom in that area) in comparison with the rest of the area. Take your time and use your polarized sunglasses and you may also catch sight of a fish, or its shape, hovering near a bed. Soft plastics can be dragged over beds or allowed to actually settle into the bed. This may stimulate a savage strike. Bass can also gently pick up the bait and deposit it away from the bed without really 'eating' it. For this reason, some recommend brightly colored baits so that you can actually watch what the fish is doing. You will not always have this luxury, so I recommend paying close attention and staying attuned to your line and rod. For obvious biological and sporting reasons, please handle any spawning bed fish carefully at the water level, get the hook out gently and release an upright, rested and revived fish. The fish and all your fellow bass fisherman will be grateful!
Another great bait around the 'crazy time' of the Spawn, when big fish can sometimes be the least wary, is the floating stickbait. A Bomber Long A or Rapala in a baitfish pattern such as rainbow trout or perch can be deadly. Look for an opening in a brush pocket, or along green grass growing up out of the water along a point, or over the top of flooded brush and submerged stumps, or along the outside lines of reeds, or over actual beds which you will find about 10 feet out from shore. Hmmmm! Sounds like there are quite a few spots where these baits will work!
You may need to experiment with a larger bait or a smaller bait, or a different color pattern, but the stickbait can be a real producer, and there is no fancy or secret technique involved here. Just find a likely spot like those mentioned above. Toss the stickbait near the grassline or reedline, or beyond the brush or submerged wood. Let it sit. Let all the ripples from its entrance into the water disappear. Let it sit a little more! Often just the appearance of this bait will cause a savage attack. I have actually watched a big bass rise out of the water and pounce downward on my stickbait. Heart attack time!
If no immediate strike occurs, and after waiting as long as you can, gently twitch the bait. As minimal a movement as you can make. Let it sit some more. Repeat this process a few times. This can also be irresistably tantalizing to Bass.
If you still have no bite, move the bait. Don't reel it down and dive it. Just pull gently and move the bait over the top of the water. Anywhere from 6 inches to a foot or more. Use this time to 'position' your bait if you are going after fish hiding in submerged wood. Make use of the time it is directly over your target to twitch it again. This tactic can also stimulate a charging or a sipping bite from the hiding fish.
I was fishing from shore in a backwater of the Columbia, casting to a favorite submerged 'schoolmarm' or forked log, with some of the forks exposed above water. My brother laughed as I complained about getting my stickbait and its treble hooks 'too close' to the exposed wood. Concerned about losing this expensive bait, I held my rod to the side and painstakingly, slowly pulled the bait between two threatening stickups. I thought I had escaped the trap when to my dismay, I came up hard against what I thought was a submerged stick. Wrong! A huge bass had decided that my bait would travel no further past his hideout! When I finally battled the fish in, my brother just laughed and said maybe a little 'worrying' was a good thing!
After exhausting your sitting, twitching and pulling reflexes, one last tactic remains: Get your line tight, reel quickly for about 4 or 5 turns of the reel handle, forcing the bait to dive and swim erratically, then stop the retrieve and let up. Often this 'escaping' action of your stickbait is just too much for the Bass. Repeat this process back to the boat or your position on shore, if depth allows.
Who knows what your Spawn adventure will be? Get out there, experiment, look for likely spawning areas, and you might be 'worrying' about a monster on the line too!
See you next month, when we'll get into some specifics about topwaters and tactics.

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