Block 5 Lake 30 Depth Map & Fishing Spots (ON)

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Lake depth chart

Block 5 Lake 30, ON

Max 10 ft

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Where to start

Fall shiner run window is on — see the hatch outlook

Hatch outlook

Fall shiner runActive window

Typical here: Sep 1 – Oct 31 · same push on the Ontario side — Simcoe's shiners migrate shallow as the water cools, and the predators ride with them

adultdaylight for the jig bite; after dark the shiners stack under dock lights with walleyes and pike mixed right in — follow the bait, not the spot — millions of shiners move together and the predators ride with them; silver profile and flash matter

Concentrates hard but travels — the school (and the walleyes under it) can be off a river mouth one week and miles upriver the next.

Jig-and-minnow is the event's signature — a frozen emerald shiner on a 1/4 oz jig drifted along the run; silver jerkbaits and trolled crankbaits take the roaming fish; blade baits under the schools.

The event happens over river mouths and the first miles upriver, warming shallow shorelines, and rocky points where the displaced bait stacks

Next on this water

Hex (giant mayfly) · mayflyMay 25 – Aug 10 · in ~8 months

June mayfly hatch (walleye lakes) · mayflyJun 1 – Aug 10 · in ~8 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours here are generated from real agency depth surveys; use the survey badge for the provider, dataset, datum and measured coverage. Never use for navigation. Always check local regulations.

Walleye

Depth · ft

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Recent catches at Block 5 Lake 30

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Fishing Block 5 Lake 30: what the data says

52-acre lake in Rainy River District, Ontario. The lake tops out around 10 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from a transect sounding survey by the Ontario MNRF. What the data behind the map says about each species, season by season:

On the chart, Block 5 Lake 30 draws 52 acres inside 1.9 miles of shoreline — 2 islands included. Index 1.9 on the shoreline: a few honest points and pockets, nothing labyrinthine. There is no deep basin to speak of — the entire surface is under ~15 ft, prime weed water end to end. Tip to tip the water measures near 0.7 mi with a 0.2-mi widest point. You'll find it in Rainy River District. The nearest mapped water is Block 5 Lake 7, 0 mi to the southwest.

Walleye fishing at Block 5 Lake 30

Early season walleye use the shallows, holding in 3 to 10 ft. Even in summer they hold at 3 to 10 ft; winter keeps them in 3 to 10 ft. Put Break off the point first on the milk run — a drop-off near 3 ft that grades prime for fall. In summer the feeding windows fall in the evening and early morning. Tie on a crawler harness on bottom bouncer or a deep crankbait (trolled) and you're in the game.

Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 10 ft chart-limited; documented 4 to 15 ft	dusk & dawn	Main-lake point (4 ft)	1/8 oz jig + minnow, Hair jig
Summer	3 to 10 ft chart-limited; documented 15 to 35 ft	dusk & dawn	Break off the point (3 ft)	Crawler harness on bottom bouncer, Deep crankbait (trolled)
Fall	3 to 10 ft chart-limited; documented 12 to 40 ft	dusk & night	Break off the point (3 ft)	Jigging rap, Jig + big minnow
Winter	3 to 10 ft chart-limited; documented 20 to 40 ft	dusk & dawn	Deep basin (10 ft)	Jigging spoon + minnow head, Rattle bait

Notable structure

Block 5 Lake 30 carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 10 ft down.

Deep basin: deep basin, around 10 ft
Secondary point: point, around 6 ft
Main-lake point: point, around 4 ft
Shallow bay flat: weed flat, around 4 ft
Break off the point: drop-off, around 3 ft

Block 5 Lake 30 fishing regulations

Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Block 5 Lake 30 specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Block 5 Lake 30?

Block 5 Lake 30 is about 10 ft (3 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.

What fish are in Block 5 Lake 30?

Anglers target walleye on Block 5 Lake 30.

Where is the best fishing spot on Block 5 Lake 30?

Break off the point is the top-rated area: a drop-off in about 3 ft of water that rates prime for walleye in fall. Open the map above to see every rated spot for each species and season.

When is the best time to fish Block 5 Lake 30?

For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.

What are the fishing regulations for Block 5 Lake 30?

Fishing on Block 5 Lake 30 is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.

Nearby waters

Block 5 Lake 7 0 mi · Darkwater Lake 1 mi · Ballard Lake 3 mi · Gratton Lake 5 mi · Middle Roland Lake 5 mi · Pulling Lake 6 mi · Little Roland Lake 6 mi · Pond Lake 6 mi · Dahlin Lake 6 mi · Poohbah Lake 7 mi · McAree Lake 7 mi · Crooked 9 mi, MN/ON

See how Block 5 Lake 30 stacks up: best walleye lakes in Ontario

More water nearby: Rainy River District fishing maps (257 charts). Browse all Ontario fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.