Lake Halcyon in Montgomery County: How and When to Fish It

• Overview

  The Montgomery County entry here is Lake Halcyon, in Maryland. It lies 371 feet above sea level. About 3 acres of surface, which puts the far bank inside easy sight. On size it sits at the modest end of our Montgomery County list. Gaithersburg sits 1.9 miles from here and is the nearest stop. Derwood lies 3.1 miles off, North Potomac another 3.5 miles. It lies deep inside the county rather than near an edge.

• Where to Fish on Lake Halcyon

  There is no published depth for this one, so start shallow and work out. Held water runs deepest at the wall and shallows back to the inflow. The old creek line under the surface is the feature worth finding. County-wide records name bluegill, largemouth bass, fantail darter, tessellated darter and green sunfish. The county list is broader than any single water. Lake Halcyon repays a walk before the first cast.

• Seasonal Patterns

  Climate records put July near 77°F and January near 32°F. Whether it freezes depends on the year. Some winters give nothing at all, so plan for open water. June to September is hot work, so the first and last hours are what count. That shapes the year on Lake Halcyon. Conditions on the day matter more than the month on the calendar.

• Tackle & Baits

  Whether you may fish here is not something records settle. Mapping marks this water as fished, so there is at least an established use. The nearest car park is 100 yards from the water. A small crankbait along the drop and a worm in the thick stuff cover the bass. Look for a notice board at the entrance. Some water is controlled locally without a sign saying so. If the gate is shut, Lake Varnuna at 0.5 miles is the nearest alternative. Check the position at Lake Halcyon before loading the car.