Upper Chesapeake Bay

Summer edge bite on the Flats grass at dawn and dusk, chatterbaits and topwater when the light is low.

Water is warm at 82 degrees, the comfortable feeding range for summer, but the bright bluebird sun and rising pressure are pinning bass to shade and deeper water through the day. Clarity is good over the grass beds where it matters most, so the Susquehanna Flats grass pattern is wide open. Bass are shaded up inside the grass and on the interior edges through midday, and they feed hard on the falling tide at first light and last light when they slide out to the breaklines. The tidal swing moves them on and off the shallow grass beds, so tide timing is as important as lure choice. This is a dawn and dusk fishery today, not a midday grind.

The day's game plan

Where to fish

• Susquehanna Flats grass edges — 2 to 5 feet · Outside edges of grass beds where the canopy transitions to open bottom. The breakline where interior grass meets the deeper basin. Current-swept areas on the falling tide where baitfish get displaced.
  This is the staging area where bass feed on the falling tide. The edge provides both shade from overhanging grass and access to open water where baitfish flee. Tide movement concentrates fish here during peak feeding windows.
• Interior Susquehanna Flats grass — 3 to 6 feet · Thickest grass canopy, matted vegetation over submerged hydrilla and milfoil. Isolated pockets and gaps in the grass where bass hide from bright sun.
  Bass retreat into this cover during the day to stay comfortable and avoid the bright light. The grass provides shade and concealment. On high water, the canopy is submerged and accessible to a chatterbait. On low water, weedless presentations are mandatory.
• Shallow Flats basin adjacent to grass — 2 to 4 feet · Open bottom with scattered grass clumps or remnant vegetation. Hardpan or sandy bottom between grass beds. Subtle depth changes and swings.
  This is where topwater works best. Bass hunting baitfish in low light position themselves in the shallow open water between grass beds where they can see prey silhouetted against remaining light. The shallow basin allows large bass to hunt without committing deep.

What to throw

• Chatterbait — n/a · Black and blue or chartreuse and black · 3/8 ounce (Early morning, late afternoon, and dusk when bass are on the move and edges are active)
  Retrieve at mid-speed with contact on the grass tops, ticking the canopy without fouling. On the falling tide, work the edges as bass slide out of the interior grass.
• Topwater Popper — 4 to 5 inches · White or shad pattern · n/a (Evening and dusk during the lowest light, especially the 5:30 PM solunar major window)
  Walk the plug with a steady cadence, creating a rhythmic pop and wake. Work the lure along grass edges and shallow breaklines. Keep retrieves steady and deliberate.
• Weedless soft plastic jig — 3/8 ounce head with 5-inch body · Green pumpkin or watermelon · already specified in head weight (Morning through midday when bass retreat into deep interior grass for shade)
  Pitch or cast into the thickest matted grass, work the jig vertically with short hops, feeling for weight. Slow the fall and pause between movements to let the bait settle.
• Soft plastic jerkbait — 3 to 4 inches · White or natural shad · n/a (Dusk and evening as the topwater window closes)
  Cast near grass edges and retrieve with a twitch and pause cadence. Let the bait glide on slack line between jerks. Work the lure at mid-depth, mimicking an injured shad.
• Blade bait or spinnerbait — n/a · Black and blue or chartreuse · 3/8 ounce (Late afternoon and early evening when the tide is dropping and fish are moving off the grass)
  Cast parallel to the grass edges and retrieve at a steady speed that keeps the blade vibrating. Work deeper water and open flats adjacent to the grass, covering ground to find actively feeding fish.

How to work it

• Edge bite on the falling tide — Early morning and evening when the tide is actively dropping and bass are moving from interior grass to the edges to feed · Susquehanna Flats edges, especially where grass has a defined hard edge against deeper bottom
  Position on the grass edge breakline as the tide drops. Cast parallel to the breakline and work the transition zone where interior grass meets open deeper water. Focus on the outside corner of the grass beds where current breaks and baitfish stage.
• Interior grass pick apart — Morning through midday when the sun is high and bass are avoiding bright light · Interior Flats grass bed, the deepest and thickest sections where bass hide from the sun
  Cast into the thickest matted grass or pockets of cover. Work vertically with short hops and pauses. Feel for weight and resistance. Let the jig sit and wiggle in place. Focus on dense canopy where shade is darkest.
• Topwater aggression in low light — Evening and dusk, especially the 5:30 PM solunar major window, when the light is fading and bass are most aggressive · Grass edges and shallow adjacent flats where bass hunt in low light
  Walk a popper or surface lure with a steady rhythm, creating a consistent pop and wake. Minimize false casts and redundant movements. Work the lure in close, controlling the cadence and keeping contact with the surface.

Pro tips

• Tide timing is half the bite. The falling tide in early morning pulls bass from the interior grass out to the edges where they feed. The falling tide again in evening does the same. If you miss the 6 AM to 8:30 AM window and you are not on the edge at the right tide stage, you are not positioned for the best bite.
• The pressure is rising, which normally pushes bass deeper and tighter to cover. The bright sun compounds this. Stay focused on shade and structure, and do not waste time on open, exposed water. Bass are lazy in rising pressure and bright sun, so they position in the thickest cover available. Fish slow and tight.
• If the topwater bite is slow in evening, do not abandon the time window. Switch to a chatterbait or jerkbait and work the edges methodically. Sometimes the bite needs a more subtle trigger than a loud popper, especially if the wind is still light and the water is flat. A methodical chatterbait retrieve can be just as deadly as topwater aggression.

If conditions change

If a breeze picks up and clouds move in, the shallow bite can stretch longer through the day because the overcast keeps light from penetrating as deep. If that happens, the interior grass bite and edge bite merge, and you can stay shallow through midday with a chatterbait. If the wind goes calm and the sun stays bright, the bass pull even tighter to shade and deeper grass, so downsize to finesse jigs and pitch into the densest cover. If the pressure continues to rise or a front approaches, bass will burrow into the thickest matted grass and require vertical presentations and dead-stick holds. If the Susquehanna flows increase and muddy the western Flats, slide east to the North East River side, which clears faster and holds cleaner grass beds. In that muddy water, switch to dark colors and wider-thumping blades so bass can track the lure by feel.