What Union Lake offers and how to fish it

Union Lake sits just north of Millville in Cumberland County and holds largemouth bass, catfish, and sunfish in a 250-acre impoundment that draws locals year-round. The lake is open to the public, managed by the Millville Water Department, and accessible from a boat launch on the west shore. If you're coming from Millville proper, you're looking at a short drive north on Route 47—close enough for an afternoon trip but far enough that it doesn't feel crowded on weekdays.

The water is relatively shallow across most of the lake, which means bass relate to structure rather than depth. Fallen timber, the dam face, and the inlet creek all hold fish depending on the season. Catfish here run decent size and feed predictably at night, making Union Lake a solid choice if you want to sit still and wait rather than cast all day.

Key Takeaways

  • Union Lake is a 250-acre public impoundment north of Millville with a boat launch on the west shore and parking for trailers.
  • Largemouth bass respond to fallen timber and shallow structure; spring and fall are most consistent, though summer night fishing for catfish is productive.
  • New Jersey fishing licenses are required for anyone 16 and older, and you can purchase them online or at local tackle shops in Millville.
  • The lake is shallow enough that wind direction and time of day matter more than depth changes; dawn and dusk are prime for bass.

Seasonal patterns and what to target

Spring (March through May) is when Union Lake wakes up. Bass move shallow to spawn around the inlet creek and along the western shoreline where vegetation begins to green. Throw crankbaits and soft plastics in the 4- to 8-foot zone; you don't need to go deep here. Catfish also become active as water temperatures climb, and night fishing with chicken liver or cut shad produces steady action.

Summer (June through August) flattens the bite during daylight. Bass retreat to whatever deeper water the lake offers—the channel near the dam and the old creek bed running through the middle. Early morning and late evening are your windows. Catfish, on the other hand, bite best after dark. If you're willing to fish 10 p.m. to 2 a.m., set out three rods with live bluegill or cut mullet and you'll likely connect with fish in the 5- to 15-pound range.

Fall (September through November) brings the second-best bite of the year. Bass feed aggressively as they prepare for winter, and they're less picky about lure choice. Spinnerbaits, topwater, and soft plastics all work. The inlet creek becomes a focal point again as baitfish concentrate there. Water temperatures drop into the 50s by late November, and the bite slows but doesn't stop.

Winter (December through February) is slowest, but catfish remain catchable if you're patient. Bass are lethargic and deep; if you're targeting them, fish the dam face with small jigs or live shiners fished slowly. Most anglers skip winter at Union Lake and fish elsewhere, which means less pressure if you do show up.

Access, parking, and boat launch details

The public boat launch is on the west side of the lake, accessed from Route 47 North. There's a gravel parking area that holds roughly a dozen vehicles and a few trailer spots. The launch itself is a single-lane concrete ramp in decent condition, though it can get soft after heavy rain. There's no fee to launch, and no attendant on site—it's first-come, first-served.

If you don't have a boat, shore fishing is possible along the dam and at a few spots on the west bank, though access is limited compared to launching. The dam face is the most productive shore spot and holds catfish and bass year-round. Walk the perimeter cautiously; the bank is steep in places and can be slippery when wet.

Parking is tight on weekends during spring and fall. Arrive early or fish weekday mornings if you want a may provide spot. The area is quiet and well-maintained; there's no trash problem or trespassing issues that I've encountered.

What tackle and bait work best

For largemouth bass, bring a medium-power spinning or baitcasting rod with 10- to 15-pound braided line. Crankbaits (especially shad-pattern plugs in the 2- to 3-inch range), soft plastics (4- to 6-inch worms and creature baits), and spinnerbaits all produce. The water is stained to slightly murky depending on recent rain, so don't worry about matching the hatch exactly—bass here aren't picky.

For catfish, a medium-heavy rod with 20-pound monofilament or braided line works well. Use a simple three-way rig or a slip sinker above a barrel swivel, with a 2/0 to 4/0 circle hook. Chicken liver, cut shad, and live bluegill are your best baits. Catfish here respond to scent more than anything else, so don't overthink it.

Sunfish (bluegill and pumpkinseed) are abundant and fun on light tackle. A 6-foot ultralight spinning rod with 4-pound line and small jigs or live crickets will keep you busy if the bass aren't cooperating. Kids do well here targeting panfish along the shallow western shore.

New Jersey fishing license requirements

Anyone 16 years old or older must have a valid New Jersey fishing license to fish Union Lake. You can purchase a license online through the New Jersey Division of Fish and Wildlife website, or in person at tackle shops in Millville—several carry them and can answer questions about current conditions.

A three-day tourist license is available if you're visiting, or you can buy an annual resident license if you plan to fish multiple times. Licenses are inexpensive and the money funds habitat work and stocking programs across the state. Keep your license on you while fishing; enforcement does patrol Union Lake occasionally.

Common mistakes and how to avoid them

The biggest mistake is fishing too deep. Union Lake averages 15 to 20 feet, and most of the productive water is in the top 10 feet. Anglers coming from deeper lakes often waste time casting to the middle of the lake when the real action is along structure in shallow water. Focus on the inlet creek, the dam face, and any fallen timber you can spot.

Another common error is fishing midday in summer. The sun is high, the water is warm, and bass shut down. If you can only fish during the day, go in spring or fall. If you're committed to summer, fish before 8 a.m. or after 6 p.m., or switch to catfish and night fishing.

Finally, don't ignore the inlet creek. It's the most consistent spot on the lake because it brings in fresh water and baitfish. Bass stage there year-round, and catfish use it as a highway. If you only have time to fish one area, make it the creek.

Nearby water and alternative options

If Union Lake isn't producing or you want to explore, Sunset Lake is about 10 miles south and holds similar species with slightly different structure. Nantuxent Lake, also in the area, is smaller but can be less crowded. Both require the same New Jersey license and offer similar seasonal patterns.

The Maurice River, which flows near Millville, offers smallmouth bass and catfish in a moving-water setting if you want a change of pace from the lake. It's a different style of fishing but worth a day trip if you're comfortable with current and navigation.

Frequently Asked Questions

What's the best time of day to fish Union Lake?

Dawn and dusk are most consistent for largemouth bass year-round. In summer, fish before 8 a.m. or after 6 p.m. to avoid the midday lull. Catfish bite best after dark, especially from 10 p.m. to 2 a.m., so night fishing is worth trying if you're willing to stay late.

Can I fish from shore, or do I need a boat?

Shore fishing is possible along the dam and at a few spots on the west bank, but a boat gives you access to more productive water and structure. If you don't own a boat, the dam face is your best bet for both bass and catfish.

What size bass and catfish are typical here?

Largemouth bass average 1 to 3 pounds, with occasional fish in the 4- to 6-pound range. Catfish run 5 to 15 pounds on average, with larger fish possible if you fish at night and use live bait. Sunfish are plentiful and average 6 to 10 inches.

Is the boat launch open year-round?

Yes, the launch is open year-round and free to use. Winter conditions can make it soft or muddy after rain, so check conditions before you go if it's been wet. There's no attendant, so you're responsible for launching and retrieving safely.

Do I need a special permit to fish Union Lake?

No special permit is required beyond a standard New Jersey fishing license. The lake is open to the public, and there are no additional fees or restrictions beyond state-wide fishing regulations.