Jig (Casting & Pitching) Fishing on Round Valley Reservoir
Round Valley Reservoir · New Jersey · Northeast
Round Valley Reservoir sits in Hunterdon County, New Jersey, impounded in the early 1960s and reaching depths exceeding 180 feet — making it the deepest lake in the state. The fishery is defined by steep rocky shorelines, minimal shallow-water structure, and gin-clear water that rewards finesse presentations over power fishing. Smallmouth bass are the primary target for bass anglers, with the population skewing toward quality over numbers.
A lead or tungsten head with a weed guard, skirt, and soft plastic trailer. Fished on the bottom by pitching, casting, or slow-rolling. The jig imitates crawfish and bottom-dwelling forage. More big bass have been caught on jigs than any other lure category — it's the lure that separates serious anglers.
Jig (Casting & Pitching) Setup for Round Valley Reservoir
| Rod | 7'–7'3" medium-heavy casting rod, fast action |
| Reel | 7.1:1 baitcaster |
| Line | 15–20 lb fluorocarbon (cover) or 50 lb braid (heavy grass) |
| Weight | 3/8 oz standard; 1/2–3/4 oz in wind or deep; 1/4 oz finesse |
| Hook | Built-in, typically 4/0–5/0 |
Seasonal Tactics on Round Valley Reservoir
Lake: Smallmouth move onto the shallowest available rocky points and riprap stretches as water temps climb through the low 50s into the low 60s — typically April into early May. A drop shot or finesse jig in 8–18 ft produces well during this window before spawning activity peaks.
Jig (Casting & Pitching): Pre-spawn is prime season — pitch brown/green pumpkin jig to 45° bank transitions and rocky points.
Lake: Post-spawn fish retreat quickly to deeper structure in 25–50 ft as the reservoir stratifies. Suspended smallmouth over the thermocline respond to ned rigs and tube jigs fished on drop shots, but locating the right depth band is the whole game.
Jig (Casting & Pitching): Football jig on offshore ledges 15–30 feet. Swimming jig around grass edges at dawn.
Lake: Cooling water pulls fish shallower again through September and October, and this is arguably the most productive topwater window on the reservoir — walking baits and small poppers near rocky points at first light can draw aggressive surface strikes from quality smallmouth.
Jig (Casting & Pitching): Swim a jig around baitfish schools near points and flats. Shad trailer colors in fall.
Lake: Round Valley stays open year-round and offers a legitimate winter smallmouth bite for anglers willing to fish slow and deep. Blade baits like a 1/2 oz Swedish Pimple or a jigging spoon worked vertically in 30–50 ft over main-lake structure are the most consistent cold-water producers.
Jig (Casting & Pitching): Slowest presentation — drag a 3/8 oz football jig on deep hard bottom. Barely move it.
Best Conditions
All seasons, all depths, all cover types; most effective in 50–70°F water; excellent in pre-spawn and when fish are on hard bottom
Match trailer to conditions: craw trailer in cold water (slower fall, bigger profile), swimbait trailer when swimming, chunk trailer for flipping.
More Techniques for Round Valley Reservoir
Ready to fish Round Valley Reservoir?
Ask Hank about current conditions, water temp, and exactly what to throw today.
Ask Hank →