Brown Trout

While Mark, Illinois, isn't exactly known as a brown trout mecca, determined anglers can find them with dedicated effort. The Illinois River and its tributaries, though primarily known for other species, do offer limited opportunities. Stocking programs in select areas can provide the best chances. Spring and fall, when water temperatures are cooler, are your prime times. Look for deeper pools and areas with structure like submerged logs or rocky outcroppings. These fish tend to be more opportunistic feeders in these environments. A practical tip: Focus your efforts early in the morning or late in the evening when light penetration is low. Also, be aware of fluctuating water levels in the Illinois River system, which can significantly impact fish behavior. Smaller spinners, crankbaits mimicking small baitfish, or even drifting nightcrawlers can be effective. Be prepared to cover some ground and experiment with different techniques to find where the trout are holding.