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Habitat Stream and River Fishing
Lake and Reservoir Fishing Baits and Other Catfishing Tips
Winter Fishing Tackle Selection Hints for Better Catfish Fishing
Fishing for Channel Catfish
Written By Donald L. Bonneau, Fisheries Research Supervisor, Iowa DNR (1987), and
Updated By Adam Thiese, Fisheries Technician, Iowa DNR (2013)
The honors of being the most popular and abundant sport fish in Iowa go to the sleek and tasty channel catfish. Channel catfish are found in nearly all of our lakes, ponds, streams and rivers, and are, beyond a doubt, the most abundant game fish found in our streams. Studies have shown that populations of 500 to over 5,000 pounds of catfish per mile in Iowa streams are quite common. Lakes and ponds also produce excellent catfishing, and it is in these waters that the largest specimens are found. The large flood-control reservoirs contain natural populations of channel catfish; however, annual stockings of hatchery-reared fish are required to maintain the populations in small lakes and ponds.
Enough said of the general background of channel catfish in Iowa; let's get down to the specifics of the species and some of the best techniques used by fishermen to catch them.
First, before getting into the actual fishing techniques it might be advantageous to take a look at the natural feeding habits of this species. Catfish, by and large, are omnivorous feeders with a well developed sense of smell. This simply means they consume a wide variety of food items, and the fish is most often attracted to odoriferous or "smelly" morsels of food. The single greatest determinant of catfish food preference is body size. Smaller catfish, those less than 14 inches, feed primarily on bottom-dwelling organisms, such as aquatic insect larvae and other invertebrates. As catfish grow to a larger size, their diet changes and a wider variety of food items are eaten. Fish, however, either alive or dead, make up the bulk of their forage after they reach 16 inches.
The diet of channel catfish also varies with the different seasons. Some food items are more available at one time of the year than another, and, being an opportunistic forager, channel catfish take what food is vulnerable to predation at that time. During late winter and early spring the most abundant food is a wide variety of organisms, including fish that have succumbed to the harsh winter. These morsels, in various stages of decomposition, are consumed in large quantities by catfish. It is not unusual to find catfish stomachs gorged with decaying fish shortly after ice-out. As the water warms into late spring and summer the diet of catfish shifts continually to food items that are again most available and vulnerable. The most prevalent foods at this time of the year are aquatic and terrestrial worms, fish, frogs, crayfish, mulberries, insects and their larvae forms, elm seeds and algae. Many other items are consumed but usually make up only a small portion of the menu. Catfish food habits in the fall again change as the water cools. More fish is consumed along with aquatic invertebrates and terrestrial insects. Frogs become increasingly important for food as they move into streams before the onset of winter. Under the ice cover catfish feeding is reduced to a low level and consists mostly of dead fish that are picked up from the bottom.
Stream and River Fishing
Iowa is blessed with nearly 20,000 miles of interior streams that are virtually loaded with channel catfish. These streams contain the most under-utilized fisheries in the state. Low fishing pressure on these rivers is due mostly to the relatively poor access provided by public facilities and the more difficult and challenging fishing conditions presented in flowing water. For those fishermen that persevere, these streams offer some of our most unique outdoor opportunities. Whether bank fishing, wading, or fishing from a boat, Iowa rivers and their stream corridors offer an unexcelled nature experience. With few exceptions, a trip to the "old fishing hole" in any major river will usually be accompanied by solitude.
Stream habitats that concentrate fish are riffle areas just above pools, cut-banks, snags, rocks, and other submerged structures that are located in the stream. The outside edge of river bends usually has a cut-bank and deep water which hold large catfish populations. These outside bends usually have snags or log jams that provide cover for catfish. It is best to fish upstream of the snags and log jams and cast the bait back towards it. This allows the scent of the bait to be carried downstream into the structure by the current drawing the catfish out. On the other hand, the inside portion of river bends always contains shallow water and sand bars with little habitat diversity, which in combination produce poor fishing.
The deepest holes in the river will be the best place to look for channel catfish in the late fall and early winter. Channel catfish move into this type of habitat to over-winter. Fish won’t be as aggressive as they are in the spring and summer due to the colder temperatures but try fishing with cutbait or nightcrawlers on slip sinkers rigs fished near the bottom.
Mississippi River/Missouri River
The border rivers of Iowa are popular fisheries that maintain large naturally reproducing populations of channel catfish.
The Mississippi River has many different types of habitats that hold channel catfish including snags and log jams along the main channel and side channels, main channel wing dams, rip-rapped (rock armored) shorelines, and shallow stump fields in the backwaters.
Fishing typically begins in the spring as the ice goes out and channel catfish begin to feed on winterkilled shad. Many of the backwaters and shallow mudflats will typically have dead shad that died that winter. Fish the mouths of these backwaters and shallow mudflats with cutbait or shad on the bottom.
As June approaches, catfish are beginning to spawn. Male channel catfish will find a cavity in a rocky shoreline, snags, or stump to make a nest to guard its eggs. The male channel catfish will defend the nest against other fish from raiding the nest. Anglers can take advantage of the fish’s nature by floating live fish, crawlers, or leeches under a bobber along rip rap shorelines, stumps, snags, or any other structure that may provide a cavity for the fish. Riprap shoreline with big boulders is best because of the bigger cavities that it makes. Let the bobber rig drift in the current or with the wind close to the structure to lure the catfish out. Strikes are fairly aggressive and anglers will need to set the hook quickly before the fish releases the bait.
Most of the midsummer fishing is done anchoring above snags along the main channel and side channels or above the wingdams in the main channel. Most anglers will be using slip sinker rigs fished on the bottom with stinkbait but shad guts and nightcrawlers work as well. Walleye anglers will often catch channel catfish casting or trolling crankbaits on the wingdams in the summer months.
The Missouri River on the western border of Iowa also holds good numbers of channel catfish. This river is different than the Mississippi River in that it is heavily channelized and has faster current. This river also lacks the side channel and backwater habitats of the Mississippi River. Many catfish anglers will target the wing dike fields when fishing for channel catfish. The wing dikes create current seams, eddies, and sandbars that hold bait fish and aquatic invertebrates which in-turn attract channel catfish. Snags in the river hold channel catfish as well. Techniques to fish for channel catfish on the Missouri River are similar to other river systems but anglers will most likely have to increase the weight of their sinkers due to the stronger current. Bait choices include cutbait, stinkbaits, crawdads, and nightcrawlers.
The Missouri River also has a few old oxbows that have been cut off from the river that provide channel catfishing as well. Try fishing the outside bends of these old oxbows as that is where the deeper water will most likely be. Most anglers target channel catfish in these areas with slip sinker rigs fished on the bottom with either stinkbait or nightcrawlers in the summer months.
Lake and Reservoir Fishing
Lakes also produce good channel catfish fishing, and the opportunity for this type of catfish fishing continues to improve in our public waters due to an aggressive stocking program with large fingerling fish. Stocked fish grow rapidly and to a large size. In fact, the largest catfish caught in the state each year are invariably taken from lakes and ponds. Fish caught in our man-made lakes in excess of 10 pounds are quite common.
Like catfish that inhabit rivers, lake-dwelling catfish are not evenly dispersed but concentrate into specific locations. The major cause of this concentration is the thermal and chemical stratification that is in place in Iowa lakes during the summer. Most ponds and fishing lakes stratify into three distinct thermal layers 10 to 15 feet below the surface, and water in the lower strata contains no oxygen -- and consequently no fish. As a result, it is a waste of time and effort to fish in the deeper water during summer. Restrict your angling to depths above this stratification level. Or if you desire, a temperature profile at the deepest point will give the definite answer of where to fish. Streams that inflow into the upper ends of lakes also have the tendency to concentrate catfish, as does submerged structure such as timber, rock protected shorelines and drop-offs. The best advice is to look for diverse habitat -- the more diverse the habitat, the more attractive it is to catfish.
During the spawn in early June, anglers can target channel catfish around rock structure that provides cavities for nesting. Many of our smaller lakes have rip-rap (rock) placed along the shoreline to protect the banks from erosion. Large rock is also placed on the dams of man-made lakes or impoundments to protect the dam from erosion. This large rock provides large cavities for channel catfish to make their nests. Try drifting minnows, nightcrawlers, or leeches with the wind under a bobber along the rock.
Iowa’s large reservoirs can produce some outstanding channel catfishing throughout the open water season. In these systems channel catfishing seems to revolve around the gizzard shad which makes up a large part of their diet.
Fishing typically begins in the spring at ice out as channel catfish begin to feed on gizzard shad that died over the winter. Many anglers will focus fishing efforts towards the upper ends of the reservoirs fishing the shallower and warmer mudflats. The key this time of year is to fish the windblown shorelines and points where the dead shad have been blown into to find actively feeding fish. This time of year most anglers will be using cut shad or shad parts fished on the bottom.
As June approaches, channel catfish begin to spawn. Look for channel catfish along rocky shorelines that provide cavities for nesting. Large rock along the shoreline is best because it provides better cavities for nesting. Many anglers will float bobber rigs along these rocky shorelines with live green sunfish, minnows, crawlers, or leeches.
As summer approaches channel catfish move out along the channel edges of the reservoir and follow schools of shad to feed on. With today’s advancements in sonar technology many anglers will boat around until they find schools of shad. Typically there will be larger arcs on the sonar under the school of shad indicating the presence of channel catfish or other predatory fish. Anglers will then drift through the school of shad from the upwind side using lindy rigs/three-way rigs with cutbait fished on the bottom. Anglers may have to move around some as the schools of shad and channel catfish move. Bends in the creek channel or drop offs near shallower stump fields are often good places as well. The catfish may also move up into these shallower stump fields or mudflats to feed at night.
Baits and Other Catfishing Tips
Using the right bait is probably the most confusing part of channel catfish fishing, and there are nearly as many concoctions as there are catfishermen. Bait selection ranges from nightcrawlers, leeches, chicken blood, chicken liver, chicken or fish guts, crawdads, grasshoppers, water dogs, live and dead minnows, cut bait, and a multitude of prepared "stink" baits. The prepared baits most often have one thing in common -- cheese. All of these bait preparations and many others are excellent for catfish, and all will catch fish. Selection of a bait from this lengthy list may seem difficult but in actual experience selecting bait for catfish can be made into a rather simple process.
The most important points to consider when selecting catfish bait are to determine the size of fish sought and the water temperature of the lake or river that will be fished. The rule of thumb is to use cut-bait or dead minnows for the best luck in late winter and spring-time just after ice-out. This bait is composed of half-rotten fish and should be fished when the water temperature is less than 60 degrees F. Catfish actively feed on fish flesh and other animals that die during winter and sink to the bottom. The stronger the rotten odor of bait this time of the year, the better the success. Fish in deeper portions of the lake or stream prior to ice melt; then shift your efforts to shallow water afterwards. The shallow water warms faster and attracts catfish into the near-shore reaches. Catfish can be caught under ice conditions, but feeding begins in earnest after the water temperature reaches 40 degrees F.
The keen sense of smell possessed by channel catfish make it one of the few species of game fish that can be readily caught during high stream flows in the spring, summer, and early fall. During these conditions the bona-fide catfishermen prefers to fish during periods of rising water levels. Rising water levels often provide more food for channel catfish to feed on by flooding terrestrial areas along the river and food being washed in from runoff. Fish surely become more active during this time; however, the converse is true for falling water levels. Catfish usually become less active during falling levels and are less susceptible to the angler. During periods of stable or rising water levels nearly all baits will produce good catches of catfish. Use those baits that are most available under natural conditions.
One of the most popular catfish baits that is easy to store is prepared bait. As water temperatures warm to 70 degrees F and above, many catfish anglers switch to one of the prepared baits. This bait is most effective for pan-sized catfish during mid-summer -- June, July and August. Summer is the normal period of low stream flow, and smaller streams can be fished most effectively by wading. A pair of cut-off jeans and old tennis shoes will allow you to walk directly in the stream. Catfishermen seeking larger fish during this period use large-sized baits such as dead bluegill, live chubs, water dogs, crayfish and frogs. Large catfish like a good-sized meal and the movement of these creatures will attract their attention.
Even the hardiest fishermen often neglect catfish during winter months, but ice fishermen angling for panfish are often surprised by the hefty weight of a large catfish on light tackle. This is not an uncommon occurrence during winter in lakes with good catfish populations. For the best luck fish near the bottom with minnows, small insect larvae, or cut bait and do not move the bait. However, catfish can also be found suspended high in the water column, especially if shad populations are present. In this case, minnows, jigs, or spoons can be fished for suspended catfish. A reel and heavier than normal ice fishing tackle is required to consistently land catfish through a small panfish hole in the ice.
Tackle used to fish catfish is almost as varied as the baits. Lake anglers use relatively short rods, but stream anglers seem to have the best success when using longer rods from 6 to 8 feet in length. Many even use a fly rod. The advantage to the longer rods, when stream fishing, is the reach they afford for better placement of the bait. This allows the angler to fish many good holes without casting. Just drop the line near a likely spot with no more line out than the rod length. This provides excellent control of the bait for better placement and improves the chances of hooking a fish after a natural-like presentation. Ten-pound test line is recommended over lighter weight line because the bait is fished on the bottom and often near underwater snags.
The type of reel used makes little difference, but it is essential that it be in good working condition. If you are fishing for large fish, be sure to match the reel to the fish. Light duty reels are made to catch small fish and heavy duty reels have the power to land lunkers. Light tackle will catch more smaller fish but may not handle one of record class size. The thing to remember is that catfish may be in snags or heavy cover in the river and after the strike the fish may need to be "horsed" a bit.
Terminal tackle is an important consideration when setting out after "old whiskers." The most important part of the terminal tackle is the sinker and hook. Catfisherman need not show concern about the sizes, shapes, and color of expensive lures, but hooks and sinkers, inexpensive as they are, are important. Always use the lightest weight necessary, and always use a slip sinker. The slip sinker rig allows a catfish to pick up the bait without feeling the weight of the sinker. With any resistance on the line whatsoever, a respectable channel cat will leave the tasty bait morsel in search of another. Always use a sharp hook. Hooks with bait holders on the shank are preferred by most anglers. Use sponges or plastic worms when fishing with one of the soft, prepared cheese baits. No matter which hook and bait you select, present it to the fish in the most natural manner, which always requires the use of a minimum amount of sinker or weight.
Circle hooks have become a popular option for many catfish anglers especially when using live bait or cut bait. With circle hooks, there is no need to “set the hook” as they are designed to hook the fish themselves. Just slowly pull back on the rod when it starts to double over as the fish takes the bait. Quick hooksets will typically result in missed fish. Circle hooks when used properly reduce the chance of the fish swallowing the bait as they are typically caught in the corner of the mouth.
Hints for Better Catfish Fishing
*Mayhew, J. (editor). 1987. Iowa Fish and Fishing. Iowa Department of Natural Resources, Des Moines, Iowa. 323 pp.