TUESDAY, AUGUST 18, 2026 · LAKE J. B. THOMAS

Extreme heat has bass deep and sluggish. Hunt the channel edges and main-lake ledges in 20-30 feet before dawn and after dusk.

WATER 100°FAIR 98°FWIND 6 MPHSEASON SUMMERPOOL -30.4 FT

Water is running 100 degrees and the lake is sitting 30 feet below normal pool, which concentrates bass on deep structure and makes them lethargic during daylight. This lake doesn't stack bass on cover the way most Texas lakes do. It's primarily rock with limited vegetation, so fish roam and suspend along channel edges, drop-offs, and main-lake breaks, following the big gizzard shad that make up the forage base. At this water temperature, bass are purely survival mode during the heat of the day. They hunker down in the deepest available water with better oxygen and move shallow only at dawn and dusk when the sun can't bake them. The pressure is dropping, which normally fires them up, but that effect gets buried under the heat stress. You're looking at a short, intense bite window at both ends of the day. During the brutal midday hours, forget the shallow water entirely and focus on precise vertical presentations on the deep breaks if you're equipped with sonar.

The day's game plan

EARLY MORNING · 7:10 AM to 8:30 AM
Channel swing ledges and inside main-lake points in 18-26 feet, positioned on the hard-bottom breaks where gizzard shad stage before moving into deeper water
5-inch green pumpkin shaky head with 3/16 oz jighead, rigged on a 7-foot medium-light rod with 8-pound fluorocarbon. Drag it slowly along the ledge, pause every 4 feet and let it sit for 3-5 seconds. Work the bait vertically in the first 10 minutes as fish transition from night-feeding.
Bass slide up to the channel and ledge breaks at first light when the surface is still cool enough to hunt. The drop-off gives them an escape route to deep water, and the big shad are moving through the same breaks. Green pumpkin blends into the muddy water but remains visible to a bass hunting low-light structure. A shaky head keeps the bait in the strike zone longer than a swimbait would.
MORNING · 8:30 AM to 11:00 AM
Main-lake points and secondary ledges in 20-28 feet, edges where the bottom drops from 15 feet to 25 feet, with attention to any hard-bottom transitions
1/2 oz lipless crankbait in chartreuse or dark green, cast parallel to the drop-off and retrieved at a steady medium pace with pauses. Work 20-30 yards of ledge before moving. Use 12-pound braid and a 2-foot fluorocarbon leader.
Morning light pushes fish to the outside edge of the point or ledge, still accessible but deeper than the break itself. The crankbait triggers reaction strikes on suspended fish. Chartreuse cuts the murky water and the vibration pulls fish to the bait without requiring them to chase far. The lake's rock bottom and lack of dense cover means fish key on depth changes, not cover piles.
MIDDAY · 11:00 AM to 4:00 PM
Deepest main-lake channels, humps, and drop-offs in 28-35 feet with forward-facing sonar to locate individual suspended fish
3/8 oz vertically jigged drop shot rig with a 4-inch white or chartreuse finesse worm on a #1 drop-shot hook, 12-18 inches above a 1/4 oz weight. Work baits within 3-5 feet of sonar targets, jigging subtly rather than aggressively.
At 100 degrees, bass are deep and stationary during the heat. They suspend over the deepest water available, following the bait schools. Without sonar, this period is nearly impossible and usually a waste of time. With forward-facing sonar, you can place a bait within feet of an individual fish. The drop shot keeps the worm in the exact zone without drifting. Vertical jigging triggers a lazy strike from lethargic fish better than a horizontal presentation.
LATE AFTERNOON · 4:00 PM to 6:00 PM
Main-lake ledges and channel transitions at 22-28 feet, the same breaks you fished in the morning but repositioned on the outside edge of the structure as afternoon shadows lengthen
1/2 oz chatterbait in chartreuse or white, retrieved slowly with short rod twitches to keep the blade beating steadily. Cover water deliberately, checking each ledge section for suspended or positioned fish.
As the sun angle drops, the deepest part of the structure offers slight relief and bass begin to stir. The blade chatter creates vibration that travels through the murky water and pulls fish to the lure. By 4 PM you'll often see a brief resurgence in feeding as fish sense the end of the heat stress. The slow, methodical retrieve prevents spooked fish on shallow water.
EVENING · 6:00 PM to 8:00 PM
Channel swings, inside bends of the channel where current breaks form, and the first shallow shelf that connects to deep water, depths 12-20 feet
4-inch junebug or black finesse worm on a 1/8 oz Texas-rigged bullet, cast to the channel edge and worked on a 5-second fall with slow bottom drags and pauses. Use 8-pound fluorocarbon for sensitivity.
As water temperature begins to drop with approaching sunset, bass move shallower to hunt. The channel swing creates a natural staging area where bait flows through and bass position to intercept. The darker colors (junebug, black) create silhouettes in low light and draw strikes from feeding fish. The slow fall-and-pause mimics natural baitfish behavior and gives sluggish fish time to react.
DUSK · 8:00 PM to 9:15 PM
Shallow flats adjacent to channel drop-offs in 6-12 feet, hard-bottom areas with scattered rock that connect to deeper water within 50 yards
5-inch green pumpkin or black shad pattern swimbait on a 3/16 oz underspin head, cast and retrieved at a steady medium pace with occasional pauses. Work the flats parallel to the deep-water access point.
Dusk is the second feeding window. Bass are more aggressive as the water temperature stops climbing and begin to hunt actively. The shallower structure adjacent to deep water is the highway bass use to move from deep daytime sanctuaries to night feeding zones. A shad-pattern swimbait matches the lake's gizzard shad forage profile. The slight pause prevents overshooting lethargic fish that are just beginning to feed.
NIGHT · 9:15 PM to 7:10 AM (next day)
Shallow rock banks and channel margins in 4-8 feet, any hard-bottom area within 20 yards of deep-water access; work slowly and methodically
3/4 oz black spinnerbait with Colorado blade, cast and retrieved on a slow, steady path with occasional twitches. Night fishing here is low-probability but high-reward if you connect.
After cooling below the worst of the heat, bass move shallow to hunt forage in darkness. The black spinnerbait creates maximum vibration and silhouette, which bass hunt by feel rather than sight in muddy water. Colorado blades thump loudly through the turbidity. Most anglers leave the water at dark, but a night session can produce the lake's biggest fish when thermal stress is minimal.

Where to fish

What to throw

How to work it

Pro tips

If conditions change

If a weather front blows through and pressure rises sharply after dropping like this, expect a brief feeding burst before the high-pressure sluggish pattern takes hold. Fish it hard right at the pressure transition, roughly 4-6 hours before the front passes. After the high-pressure system locks in, fish will tighten even more on deep structure; downsize everything by 25 percent and fish within 6 inches of known breaks. If afternoon cloud cover rolls in and blocks direct sun, the shallow bite can extend an extra 30-45 minutes past normal dusk, so stay out longer. If the wind picks up from the south or southwest, shallow-water oxygen improves and morning and evening bites can expand into the 11 AM to 3 PM window more than usual; capitalize by fishing the channel shallows during midday heat. If water clarity suddenly improves after rain upstream, shift to natural shad colors and smaller baits; if it muddies further, upsize everything 25 percent and rely entirely on vibration and dark silhouettes.

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