GRINDSTONE CREEK NEAR MILLGROVE
GRINDSTONE CREEK ON WSC
GRINDSTONE CREEK NEAR MILLGROVE (02HB028) is a real-time streamflow monitoring station on the GRINDSTONE CREEK in ON, operated by the Water Survey of Canada. Riverbot tracks its streamflow and publishes a 7-day flow forecast so anglers know when conditions line up. 60 fish species are associated with this station in public fish records.
- WSC station ID
- 02HB028
- Operated by
- Water Survey of Canada
- Province
- ON
- Coordinates
- 43.3349, -79.9491
Live conditions & history
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7-day weather
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Fishing regulations
FMZ 16 zone defaultSpecies regulated in this area
These are species and groups covered by the applicable area rules, not a claim that they occur at this station.
Default rules for this area. A grey row means the current season status is not confirmed by this release.
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Channel catfish Open · Harvest allowed within limits Open all year Details
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Open all year
- Sport licence catch-and-possession limit
- 12
- Conservation licence catch-and-possession limit
- 6
Official rule · retrieved Jul 25, 2026
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Crappie Open · Harvest allowed within limits Open all year Details
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Open all year
- Sport licence catch-and-possession limit
- 30
- Conservation licence catch-and-possession limit
- 10
Official rule · retrieved Jul 25, 2026
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Lake whitefish Open · Harvest allowed within limits Open all year Details
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Open all year
- Sport licence catch-and-possession limit
- 12
- Conservation licence catch-and-possession limit
- 6
Official rule · retrieved Jul 25, 2026
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Largemouth and smallmouth bass combined Open · Harvest allowed within limits Jun 27 – Nov 30 Details
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Jun 27 – Nov 30
- Sport licence catch-and-possession limit
- 6
- Conservation licence catch-and-possession limit
- 2
Official rule · retrieved Jul 25, 2026
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Muskellunge Open · Harvest allowed within limits Jun 6 – Dec 15 Details
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Jun 6 – Dec 15
- Sport licence catch-and-possession limit
- 1
- Size rule
- must be greater than 91 centimetres
Official rule · retrieved Jul 25, 2026
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Northern pike Open · Harvest allowed within limits Jan 1 – Mar 31; May 9 – Dec 31 Details
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May 9 – Dec 31
- Sport licence catch-and-possession limit
- 6
- Conservation licence catch-and-possession limit
- 2
Official rule · retrieved Jul 25, 2026
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Splake Open · Harvest allowed within limits Open all year Details
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Open all year
- Sport licence catch-and-possession limit
- 5
- Conservation licence catch-and-possession limit
- 2
Official rule · retrieved Jul 25, 2026
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Sunfish Open · Harvest allowed within limits Open all year Details
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Open all year
- Sport licence catch-and-possession limit
- 50
- Conservation licence catch-and-possession limit
- 25
Official rule · retrieved Jul 25, 2026
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Walleye and sauger combined Open · Harvest allowed within limits May 9 – Dec 31; Jan 1 – Mar 15 Details
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May 9 – Dec 31
- Sport licence catch-and-possession limit
- 4
- Conservation licence catch-and-possession limit
- 2
- Size rule
- not more than 1 greater than 46 centimetres
Official rule · retrieved Jul 25, 2026
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Yellow perch Open · Harvest allowed within limits Open all year Details
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Open all year
- Sport licence catch-and-possession limit
- 50
- Conservation licence catch-and-possession limit
- 25
Official rule · retrieved Jul 25, 2026
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Atlantic salmon Closed Apr 25 – Sep 30 Details
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Apr 25 – Sep 30
Official rule · retrieved Jul 25, 2026
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Brook trout Closed Apr 25 – Sep 30 Details
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Apr 25 – Sep 30
- Sport licence catch-and-possession limit
- 5
- Conservation licence catch-and-possession limit
- 2
Official rule · retrieved Jul 25, 2026
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Brown trout Closed Apr 25 – Sep 30 Details
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Apr 25 – Sep 30
- Sport licence catch-and-possession limit
- 5
- Conservation licence catch-and-possession limit
- 2
Official rule · retrieved Jul 25, 2026
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Lake sturgeon Closed Closed all year Details
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Closed all year
Official rule · retrieved Jul 25, 2026
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Lake trout Closed Jan 1 – Sep 30 Details
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Jan 1 – Sep 30
- Sport licence catch-and-possession limit
- 2
- Conservation licence catch-and-possession limit
- 1
Official rule · retrieved Jul 25, 2026
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Pacific salmon Closed Apr 25 – Sep 30 Details
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Apr 25 – Sep 30
- Sport licence catch-and-possession limit
- 5
- Conservation licence catch-and-possession limit
- 2
Official rule · retrieved Jul 25, 2026
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Rainbow trout Closed Apr 25 – Sep 30 Details
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Apr 25 – Sep 30
- Sport licence catch-and-possession limit
- 2
- Conservation licence catch-and-possession limit
- 1
Official rule · retrieved Jul 25, 2026
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General area restrictions
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Period not confirmed
- Sport licence catch-and-possession limit
- 5
- Conservation licence catch-and-possession limit
- 2
- Limit details
- total daily catch possession limit for all trout salmon species combined
Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-10-26 in America/Toronto
Regulations shown are for reference only and may not reflect in-season changes. Always verify current regulations with the Ontario Fishing Regulations Summary before fishing.
Fish recorded near this station
Sampled in this watershedGrindstone Creek Near Millgrove has documented fish occurrence data from Ontario provincial surveys (Aquatic Resource Area Survey Point, LIO Open Data). The survey records 60 species from observation sampling near this station.
Species include: Alewife (Alosa pseudoharengus), Rock Bass (Ambloplites rupestris), Brown Bullhead (Ameiurus nebulosus), Bowfin (Amia calva), American Eel (Anguilla rostrata), and 55 others.
- Alewife Alosa pseudoharengus
- Rock Bass Ambloplites rupestris
- Brown Bullhead Ameiurus nebulosus
- Bowfin Amia calva
- American Eel Anguilla rostrata
- Freshwater Drum Aplodinotus grunniens
- White Sucker Catostomus commersonii
- Northern Redbelly Dace Chrosomus eos
- Finescale Dace Chrosomus neogaeus
- Redside Dace Clinostomus elongatus
- Mottled Sculpin Cottus bairdii
- Brook Stickleback Culaea inconstans
- Spotfin Shiner Cyprinella spiloptera
- Gizzard Shad Dorosoma cepedianum
- Northern Pike Esox lucius
- Rainbow Darter Etheostoma caeruleum
- Iowa Darter Etheostoma exile
- Fantail Darter Etheostoma flabellare
- Johnny Darter Etheostoma nigrum
- Banded Killifish Fundulus diaphanus
- Brassy Minnow Hybognathus hankinsoni
- Northern Hog Sucker Hypentelium nigricans
- Channel Catfish Ictalurus punctatus
- Brook Silverside Labidesthes sicculus
- Green Sunfish Lepomis cyanellus
- Pumpkinseed Lepomis gibbosus
- Bluegill Lepomis macrochirus
- American Brook Lamprey Lethenteron appendix
- Common Shiner Luxilus cornutus
- Smallmouth Bass Micropterus dolomieu
- Largemouth Bass Micropterus salmoides
- White Perch Morone americana
- Golden Redhorse Moxostoma erythrurum
- Hornyhead Chub Nocomis biguttatus
- River Chub Nocomis micropogon
- Golden Shiner Notemigonus crysoleucas
- Emerald Shiner Notropis atherinoides
- Blacknose Shiner Notropis heterolepis
- Spottail Shiner Notropis hudsonius
- Rosyface Shiner Notropis rubellus
- Mimic Shiner Notropis volucellus
- Stonecat Noturus flavus
- Coho Salmon Oncorhynchus kisutch
- Rainbow Trout Oncorhynchus mykiss
- Yellow Perch Perca flavescens
- Logperch Percina caprodes
- Blackside Darter Percina maculata
- Trout-Perch Percopsis omiscomaycus
- Bluntnose Minnow Pimephales notatus
- Fathead Minnow Pimephales promelas
- White Crappie Pomoxis annularis
- Black Crappie Pomoxis nigromaculatus
- Blacknose Dace Rhinichthys atratulus
- Longnose Dace Rhinichthys cataractae
- Atlantic Salmon Salmo salar
- Brown Trout Salmo trutta
- Brook Trout Salvelinus fontinalis
- Walleye Sander vitreus
- Creek Chub Semotilus atromaculatus
- Central Mudminnow Umbra limi
11 additional record(s) were reported as unidentified or mixed-taxa observations and are not resolved to species.
Where these records come from
- Evidence
- Sampled in this watershed
- Fish were sampled elsewhere in the same watershed — a provincial or federal survey nearby, not at the gauge itself.
- Records
- 60 species
- from 71 individual records
- Observed
- Jul 1, 1978 – Nov 8, 2022
- 59 dated records
🪰 Hatch Calendar
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A month-by-month hatch calendar for this river — which insects are emerging now, hook sizes, and patterns to fish — collected from fly shops and guides who know it.