Diamond Lake

Lake Eastern Ontario FMZ 15 Crown Land (Free)

30 m

Deepest charted contour

About this spot

Diamond Lake is a lake in the Eastern Ontario area of Ontario, in Fisheries Management Zone 15. MNR fish surveys (2014) recorded 9 species here, including lake whitefish, rock bass and white sucker. An MNR depth chart exists for this lake; its deepest charted contour is 30 m. This waterbody sits on Ontario Crown land open to anglers holding a valid Ontario fishing licence.

Location

Fish Species

Lake Whitefish Rock Bass Sucker Yellow Perch Smallmouth Bass

No species reported for this spot yet.

Lake data from Ontario government surveys

Ontario's Ministry of Natural Resources holds 10 fish survey records from 2014. Survey methods: Summer Profundal Index Gill Netting.

Species recorded (9)

Lake Whitefish · 8 Common Shiner · 2 Golden Shiner · 2 Pumpkinseed · 2 Rock Bass · 2 White Sucker · 2 Yellow Perch · 2 Smallmouth Bass · 1 Creek Chub · 1

Number of survey records that list the species.

Depth chart

MNR depth chart on file
Deepest charted contour: 30 m
The deepest contour line on the chart. The true maximum depth is at least this deep.

Sources: Land Information Ontario — Aquatic Resource Area survey points, Bathymetry Index and Bathymetry Line, Fisheries Management Zones, Fishing Access Points. Contains information licensed under the Open Government Licence – Ontario.

Fisheries Management Zone 15

Diamond Lake is in Fisheries Management Zone 15. Open seasons, catch limits and size limits in Ontario are set zone by zone, and some lakes carry their own exceptions, so check the FMZ 15 rules before you fish.

FMZ 15 regulations on ontario.ca

Ice fishing on Diamond Lake (2026–27)

Ontario has no separate ice fishing season: the regular open seasons apply through the ice. Diamond Lake is in Fisheries Management Zone 15, where 10 of 17 species groups are open for the whole ice season (December 1 to March 31) under the zone-wide rules. Of the game fish government surveys recorded in this lake, lake whitefish, pumpkinseed and yellow perch are open at least part of the winter under the zone-wide rules.

Species	Through the ice	Zone-wide season	Limits
Lake whitefish recorded here	Open	open all year	S-12 and C-6
Largemouth and smallmouth bass combined recorded here	Closed	fourth Saturday in June to November 30	S-6 and C-2
Sunfish recorded here	Open	open all year	S-50 and C-25
Yellow perch recorded here	Open	open all year	S-50 and C-25
Atlantic salmon	Closed	closed all year
Brook trout	Part of the season Jan 1 – Mar 31	January 1 to September 30	S-5 and C-2
Brown trout	Open	open all year	S-5 and C-2
Channel catfish	Open	open all year	S-12 and C-6
Crappie	Open	open all year	S-30 and C-10
Lake sturgeon	Closed	closed all year
Lake trout	Part of the season Jan 1 – Mar 31	January 1 to September 30	S-2 and C-1
Muskellunge	Part of the season Dec 1 – Dec 15	1st Saturday in June to December 15	S-1; must be greater than 91 centimetres, and C-0
Northern pike	Open	January 1 to March 31 and third Saturday in May to December 31	S-6 and C-2
Pacific salmon	Open	open all year	S-5 and C-2
Rainbow trout	Open	open all year	S-5 and C-2
Splake	Open	open all year	S-5 and C-2
Walleye and sauger combined	Part of the season Dec 1 – Mar 15	January 1 to March 15 and third Saturday in May to December 31	S-4 and C-2; not more than 1 greater than 46 centimetres

S = sport fishing licence, C = conservation licence (daily catch and possession). Dates are worked out for 2026–27 from the wording of the 2026 summary. Ontario publishes a new summary every January 1, so check the 2027 edition for dates after December 31.

Diamond Lake is not listed by name in the zone's species or waterbody exceptions or fish sanctuaries. Some exceptions cover whole townships or river systems, so read the zone page before you go.

Ice huts in Zone 15

Huts must be registered (free, once) and show the number outside; fabric shelters under 7 m² are exempt. Remove your hut by March 31, and in any case before the ice breaks up. You may fish with two lines through the ice in most waters, within 60 m and in sight of each.

Zone 15 ice fishing rules Ice fishing in Ontario guide

Source: Ontario Fishing Regulations Summary 2026, Zone 15 (ontario.ca); ice hut rules: ontario.ca/page/ice-fishing. This summary is not the law: check the regulations and local conditions, and never go on ice you have not tested.