WHITSON RIVER AT CHELMSFORD
WHITSON RIVER ON WSC
WHITSON RIVER AT CHELMSFORD (02CF007) is a real-time streamflow monitoring station on the WHITSON RIVER in ON, operated by the Water Survey of Canada. Riverbot tracks its streamflow and alerts anglers the moment flow and temperature hit their fishing window. 21 fish species are associated with this station in public fish records.
- WSC station ID
- 02CF007
- Agency
- WSC
- Province
- ON
- Coordinates
- 46.5834, -81.1991
Live conditions & history
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Fishing regulations
FMZ 10 zone defaultDefault area rules for fish in the public records above. A grey row means the release has no canonical regulation match for that species.
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Northern Pike Open · Harvest allowed within limits Open all year Details
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Open all year
- Sport licence catch-and-possession limit
- 6
- Conservation licence catch-and-possession limit
- 2
- Size rule
- not more than 1 greater than 61 centimetres none greater than 86 centimetres ; none greater than 61 centimetres
Official rule · retrieved Jul 25, 2026
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Smallmouth Bass Open · Harvest allowed within limits Jun 20 – Nov 30 Details
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Jun 20 – Nov 30
- Sport licence catch-and-possession limit
- 6
- Conservation licence catch-and-possession limit
- 3
Official rule · retrieved Jul 25, 2026
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Walleye Open · Harvest allowed within limits May 16 – Dec 31; Jan 1 – Mar 15 Details
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May 16 – Dec 31
- Sport licence catch-and-possession limit
- 4
- Conservation licence catch-and-possession limit
- 2
- Size rule
- none 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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Blacknose Shiner No season data
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Bluntnose Minnow No season data
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Brassy Minnow No season data
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Brook Stickleback No season data
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Brown Bullhead No season data
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Central Mudminnow No season data
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Common Shiner No season data
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Creek Chub No season data
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Fathead Minnow No season data
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Finescale Dace No season data
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Iowa Darter No season data
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Logperch No season data
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Longnose Dace No season data
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Northern Redbelly Dace No season data
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Pumpkinseed No season data
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Rock Bass No season data
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White Sucker No season data
Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-07-27 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 watershedWhitson River At Chelmsford has documented fish occurrence data from Ontario provincial surveys (Aquatic Resource Area Survey Point, LIO Open Data). The survey records 21 species from observation sampling near this station.
Species include: Rock Bass (Ambloplites rupestris), Brown Bullhead (Ameiurus nebulosus), White Sucker (Catostomus commersonii), Northern Redbelly Dace (Chrosomus eos), Finescale Dace (Chrosomus neogaeus), and 16 others.
- Rock Bass Ambloplites rupestris
- Brown Bullhead Ameiurus nebulosus
- White Sucker Catostomus commersonii
- Northern Redbelly Dace Chrosomus eos
- Finescale Dace Chrosomus neogaeus
- Brook Stickleback Culaea inconstans
- Northern Pike Esox lucius
- Iowa Darter Etheostoma exile
- Brassy Minnow Hybognathus hankinsoni
- Pumpkinseed Lepomis gibbosus
- Common Shiner Luxilus cornutus
- Smallmouth Bass Micropterus dolomieu
- Blacknose Shiner Notropis heterolepis
- Yellow Perch Perca flavescens
- Logperch Percina caprodes
- Bluntnose Minnow Pimephales notatus
- Fathead Minnow Pimephales promelas
- Longnose Dace Rhinichthys cataractae
- Walleye Sander vitreus
- Creek Chub Semotilus atromaculatus
- Central Mudminnow Umbra limi
2 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
- 21 species
- from 23 individual records
- Observed
- Aug 23, 2011 – Aug 25, 2011
- 19 dated records