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243-acre reservoir near City of Moncton. Government of New Brunswick lake depth survey. The lake tops out around 9 ft. The depth picture is modeled, anchored to the true shoreline and the water's published max depth — a scouting aid, never a chart to run a boat by. Here's the year, species by species, as the scoring engine sees it.
On the chart, Irishtown Road Reservoir draws 243 acres inside 5 miles of shoreline. With a shoreline index of 2.3, this water is all arms and coves — edge habitat well beyond its acreage. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. Tip to tip the water measures near 1.4 mi with a 0.7-mi widest point. You'll find it in Westmorland County. Closest neighbour on DepthScout: Folly Lake, 10 mi southeast of here.
The spring pattern is a shallow one: smallmouth bass in 2 to 8.9 ft. The depth story barely changes: 3 to 8.9 ft through summer, 3 to 8.9 ft in winter. The spot to know is Main-lake point, a point in about 8 ft of water that rates prime for smallmouth bass in fall. Plan around early morning and the evening in the warm months. Summer baits: a drop shot (goby/minnow) or a ned rig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8.9 ft | dawn & dusk | Main-lake point (8 ft) | Ned rig, Tube jig |
| Summer | 3 to 8.9 ft | dawn & dusk | Break off the point (4 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 3 to 8.9 ft | midday & dawn | Main-lake point (8 ft) | Jerkbait, Blade bait |
| Winter | 3 to 8.9 ft | midday | Break off the point (4 ft) | Blade bait, Hair jig |
Come spring, look for chain pickerel tight to the bank in 2 to 8.9 ft. Through summer count on 2 to 8.9 ft; the winter hold is 2 to 8.9 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Best bite is early morning and the evening. A weedless spoon + trailer or a buzzbait is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8.9 ft | midday & dawn | Shallow bay flat (3 ft) | Inline spinner (silver), Small spoon (red/white) |
| Summer | 2 to 8.9 ft | dawn & dusk | Shallow bay flat (3 ft) | Weedless spoon + trailer, Buzzbait |
| Fall | 2 to 8.9 ft | midday & dawn | Shallow bay flat (3 ft) | Jerkbait along weed edges, Spinnerbait |
| Winter | 2 to 8.9 ft | dawn | Shallow bay flat (3 ft) | Jigging spoon (through ice) |
When the water first warms, yellow perch slide up into 2 to 8.9 ft. There's no big seasonal slide here — summer means 3 to 8.9 ft, winter 3 to 8.9 ft. Start at Shallow bay flat. It's a weed flat holding about 3 ft of water and rates prime come spring. The feeding windows run early morning. Keep a drop-shot micro plastics or a small spoon tipped with worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8.9 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 3 to 8.9 ft | dawn | Deep basin (8 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 3 to 8.9 ft | midday | Deep basin (8 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 3 to 8.9 ft | midday & dawn | Deep basin (8 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring puts brook trout in skinny water — 1 to 8.9 ft is the zone. Summer fish stay in 3 to 8.9 ft, and winter fish hold in 1 to 8.9 ft. Summer brook trout concentrate at Deep basin, a prime-rated deep basin around 8 ft. Warm-month bites cluster around early morning and the evening. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8.9 ft | dawn & dusk | Main-lake point (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 3 to 8.9 ft | dawn & dusk | Deep basin (8 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 1 to 8.9 ft | midday & dawn | Main-lake point (8 ft) | Small spoon (orange), Spinner |
| Winter | 1 to 8.9 ft | dawn | Deep basin (8 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring puts white perch in skinny water — 2 to 8.9 ft is the zone. Summer fish stay in 3 to 8.9 ft, and winter fish hold in 3 to 8.9 ft. Summer white perch concentrate at Deep basin, a prime-rated deep basin around 8 ft. Warm-month bites cluster around early morning. A small spinner rig drifted or a 1/8 oz jigging spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8.9 ft | dusk | Shallow bay flat (3 ft) | Small jig + curly tail, Inline spinner (silver) |
| Summer | 3 to 8.9 ft | dawn | Deep basin (8 ft) | Small spinner rig drifted, 1/8 oz jigging spoon |
| Fall | 3 to 8.9 ft | midday | Deep basin (8 ft) | Jigging spoon (small), Blade bait |
| Winter | 3 to 8.9 ft | dusk | Deep basin (8 ft) | Small rattle spoon, Tungsten + spikes |
Count 6 structure marks on this chart. The deepest, Main-lake point, sits near 8 ft.
Season dates, license requirements, and size and bag limits for New Brunswick waters are set by the New Brunswick fishing rules — and special regulations can apply to Irishtown Road Reservoir specifically, so confirm the current rules before you fish.
Check the official New Brunswick fishing regulations →
Irishtown Road Reservoir is about 8.9 ft (3 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target smallmouth bass, chain pickerel, yellow perch, brook trout, white perch on Irishtown Road Reservoir. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Main-lake point is the top-rated area: a point in about 8 ft of water that rates prime for smallmouth bass in fall. Every other rated spot, per species and season, is on the map above.
For smallmouth bass, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Irishtown Road Reservoir is regulated by the New Brunswick fishing rules. Check the official New Brunswick regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Folly Lake 10 mi · Morice Pond 24 mi · Square Lake 25 mi · New Horton Lake 32 mi · Livingstone Lake 35 mi · Mechanic Lake 37 mi · Walton Lake 46 mi · Crawford Lake 47 mi · Despres Lake 51 mi · Dicks Lake 53 mi · Arnold Lake 53 mi · Clark Lake 54 mi
See how Irishtown Road Reservoir stacks up: best smallmouth bass lakes in New Brunswick · best yellow perch lakes in New Brunswick · best brook trout lakes in New Brunswick · best chain pickerel lakes in New Brunswick
Browse all New Brunswick fishing maps or see every water on DepthScout. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.