What You'll Find at Union Lake

Union Lake is a 418-acre impoundment in Millville, Cumberland County, in the heart of the Pine Barrens region. The lake holds largemouth bass, catfish, crappie, bluegill, and carp, with bass and catfish drawing most anglers. The water is relatively shallow—averaging 8 to 12 feet—and the shoreline is a mix of residential development, public access areas, and wooded sections. This is a working lake for local anglers rather than a destination fishery, but it produces consistent results year-round if you know where to fish and when.

The lake was created as a water supply reservoir and is managed by the City of Millville. It sits within easy reach of Philadelphia and Atlantic City, making it accessible for weekend trips. Unlike some New Jersey lakes, Union Lake sees moderate pressure rather than crowds, which means you can often find decent fishing without arriving at dawn.

Key Takeaways

  • Union Lake holds largemouth bass, catfish, crappie, and bluegill in a 418-acre shallow impoundment near Millville.
  • Spring and fall are the most productive seasons for bass; summer catfishing is reliable, especially at night from the dam and public piers.
  • Public access is available at the Millville boat ramp and several shoreline parking areas; a New Jersey fishing license is required.
  • The lake's shallow depth and weedy structure make it ideal for topwater lures in early morning and for live bait presentations near structure.
  • Catfish bite year-round but peak in late spring through early fall; chicken liver and cut shad are standard baits.

Seasons and What to Expect

Spring (April through May) is when largemouth bass move shallow to spawn and feed aggressively. Water temperatures climb into the 60s and 70s, and you'll find bass in the backs of coves, around downed timber, and in shallow grass beds. Topwater lures and soft plastics work well. Catfish also begin feeding heavily as water warms, and they'll take live bluegill or cut shad throughout the lake.

Summer (June through August) shifts the bite. Bass move deeper and become less predictable during the heat of the day, but early morning and late evening topwater sessions can still produce. Catfish become the primary target for many anglers, especially those fishing at night from the dam area or public piers. The lake's shallow depth means catfish don't have to go far to find cooler water, and they feed consistently on the bottom.

Fall (September through October) brings another strong bass bite as water cools and fish move back to shallower feeding zones. Crappie also become more active in September and October, particularly around submerged structure and brush piles. Catfish remain catchable but are less aggressive than in summer.

Winter (November through March) is slower but not dead. Bass fishing requires patience and slower presentations near deeper holes. Catfish still bite, though less frequently. Many local anglers focus on other waters during winter, so Union Lake sees lighter pressure.

Access Points and Boat Ramps

The primary public boat ramp is located at the Millville Boat Launch, off High Street in Millville. This is a single-lane concrete ramp with parking for roughly 20 vehicles. The ramp is maintained by the City of Millville and is open year-round during daylight hours. There is no launch fee, but you must display a valid New Jersey fishing license.

Shoreline access is available at several public parking areas around the lake. The dam area on the south end has a small parking lot and a public pier—a popular spot for catfish anglers, especially at night. The north end has additional pull-off areas where you can fish from shore, though parking is limited. Check with local authorities or the Millville Parks Department before fishing from any area to confirm current access policies.

If you're fishing from shore, wear polarized sunglasses and bring a headlamp if you plan to fish into dusk. The shoreline can be muddy and slippery, particularly in spring and after rain. Wading is possible in shallow areas, but the bottom is soft and uneven.

Bass Fishing Tactics and Structure

Largemouth bass at Union Lake respond well to topwater lures early in the morning, particularly during spring and fall. Poppers and walking baits work best in the 15 to 30 minutes after sunrise. Focus on the backs of coves where creeks feed the lake, around downed timber, and along grass beds on the north and east sides of the lake.

Soft plastic worms and creature baits are reliable throughout the year. Fish them slowly along the bottom near structure—fallen trees, brush piles, and rock outcrops. The lake's shallow depth means bass don't suspend far from bottom, so keep your presentations near the substrate. Summer bass often hold in slightly deeper water (10 to 15 feet) near the dam and the deepest holes in the main basin.

Spinnerbaits and crankbaits work during periods of active feeding, particularly in spring and early fall. Cast toward structure and retrieve steadily. The lake's moderate clarity means you can use slightly brighter colors—chartreuse, white, and orange—without spooking fish.

Catfish and Night Fishing

Catfish are the most reliable target at Union Lake, especially for anglers who fish at night. Channel catfish and flatheads both inhabit the lake. Channel catfish respond to chicken liver, cut shad, cut herring, and live bluegill. Flatheads prefer live baitfish—bluegill, shad, or shiners—and are primarily nocturnal hunters.

Set up near the dam or from the public pier on the south end. Use a simple three-way rig or a slip sinker rig with a 2/0 to 4/0 circle hook. Cast out, set your rod in a holder, and wait. Catfish bite steadily from late evening through early morning, with peak activity between 10 p.m. and 2 a.m. Bring a headlamp, a cooler with ice, and patience—catfish fishing is methodical and rewarding.

Summer night fishing for catfish is the most productive time. Water temperatures in the 75 to 85 degree range trigger aggressive feeding. Many local anglers make Union Lake a regular summer night destination, so you may have company, but the lake is large enough that you won't feel crowded.

Regulations and Licensing

You must possess a valid New Jersey fishing license to fish Union Lake. Licenses are available online through the New Jersey Division of Fish and Wildlife website, at sporting goods retailers, and at some bait shops. A resident annual license costs less than a non-resident license; short-term options (3-day and 7-day) are also available for visitors.

Size and creel limits for largemouth bass are 12 inches minimum length with a daily limit of 6 fish. Catfish have no minimum size and no daily limit. Crappie and bluegill have a 10-inch minimum and a 25-fish daily limit combined. Check the current New Jersey fishing regulations before you go, as rules can change year to year.

The lake is open to fishing year-round during daylight hours. Night fishing is permitted. No gas-powered boats are allowed on Union Lake—electric motors only—which keeps the water quiet and reduces pressure on fish.

Bait and Tackle Shops Nearby

Several bait and tackle shops operate in and around Millville. Local shops stock live bluegill, shiners, and shad, as well as frozen chicken liver and cut bait. They also carry rods, reels, and terminal tackle. Ask the shop staff about recent catches and which areas of the lake are producing—local knowledge is invaluable and often freely given.

If you're traveling from outside the region, bring your own tackle or order online before you arrive. Availability at local shops can vary seasonally, and you don't want to arrive unprepared.

Frequently Asked Questions

Can I fish Union Lake without a boat?

Yes. Shoreline access is available at the dam area and several public parking spots around the lake. The dam pier is particularly good for catfish. You'll have more options and reach more productive water with a boat, but shore fishing is viable, especially at night.

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

Spring (April–May) and fall (September–October) are most productive for largemouth bass. Summer is best for catfish, especially at night. Winter is slower but still fishable. If you're targeting one species, catfish bite year-round more reliably than bass.

Are there any restrictions on boat motors?

Yes. Only electric motors are permitted on Union Lake. Gas-powered boats are not allowed. This rule keeps the lake quiet and helps protect the water supply.

What should I bring for a night catfish session?

Bring a headlamp or flashlight, a cooler with ice, rod holders, chicken liver or cut shad, circle hooks (2/0 to 4/0), sinkers, and a net. Catfish fishing requires minimal gear but good lighting and patience. Wear warm clothing—nights can be cool even in summer.

Is Union Lake crowded on weekends?

Union Lake sees moderate weekend pressure, particularly in spring and summer, but it is not overcrowded. You can usually find a spot to fish without arriving extremely early. Weekday mornings are quieter if you have the flexibility.