River · Ottawa, Ontario
North Castor River
At a glance
Who lives here
- Banded killifish Fundulus diaphanusSurveyed · 2018 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Blacknose dace Rhinichthys atratulusSurveyed · 2018 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Blacknose shiner Notropis heterolepisSurveyed · 2001 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Bluntnose minnow Pimephales notatusSurveyed · 2018 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Brassy minnow Hybognathus hankinsoniSurveyed · 2018 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Brook stickleback Culaea inconstansSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Central mudminnow Umbra limiSurveyed · 2018 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Common shiner Luxilus cornutusSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Creek chub Semotilus atromaculatusSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Emerald shiner Notropis atherinoidesSurveyed · 2018 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Fallfish Semotilus corporalisSurveyed · 2001 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Johnny darter Etheostoma nigrumSurveyed · 2001 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Largemouth bass Micropterus nigricansSurveyed · 2018 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Logperch Percina caprodesSurveyed · 2001 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Longnose dace Rhinichthys cataractaeSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Northern pearl dace Margariscus nachtriebiSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Northern redbelly dace Chrosomus eosSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Pumpkinseed Lepomis gibbosusSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Rock bass Ambloplites rupestrisSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Stonecat Noturus flavusSurveyed · 2001 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- White sucker Catostomus commersoniiSurveyed · 2019 · Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario
- Brown trout Salmo truttaStocked · 2024 · Fish stocking: Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario
Not listed doesn't mean no fish.
Stocking
| Year | Species | Stage | Number |
|---|---|---|---|
| 2024 | Brown Trout | Yearlings | 503 |
| 2024 | Brown Trout | Yearlings | 503 |
| 2023 | Brown Trout | Yearlings | 300 |
| 2023 | Brown Trout | Yearlings | 300 |
| 2022 | Brown Trout | Yearlings | 500 |
| 2022 | Brown Trout | Yearlings | 500 |
| 2021 | Brown Trout | Yearlings | 500 |
| 2021 | Brown Trout | Yearlings | 500 |
| 2020 | Brown Trout | Yearlings | 500 |
| 2020 | Brown Trout | Yearlings | 500 |
| 2019 | Brown Trout | Yearlings | 500 |
| 2019 | Brown Trout | Yearlings | 500 |
| 2018 | Brown Trout | Yearlings | 350 |
| 2018 | Brown Trout | Yearlings | 350 |
| 2016 | Brown Trout | Yearlings | 250 |
| 2016 | Brown Trout | Yearlings | 125 |
As the agency publishes it. Newest first: 16 of 16.
Getting on the water
No public access site is listed for this water yet.
Listed by public agencies. A listed site doesn't make the water or its shore open to fishing: when in doubt, it's unknown. Check signs and local rules.
The rules
Summary, not the law. Check the official regulations before you fish.
- Largemouth bassOpen, any size · 6 a day
- Brown troutOpen, any size · 5 a day
As of October 25, 2026, for a fish of any size.
Official regulations: Ontario Ministry of Natural Resources
Official sources:
- Sport Fishing Variation Order for Fisheries Management Zone 18 (SF-2019/18), Ontario Fishery Regulations, 2007, s. 13(1) (Schedule A, largemouth and smallmouth bass)
- Ontario Fishery Regulations, 2007 (SOR/2007-237) (s. 18(a))
What's biting
Not enough anglers have shared catches here lately. A species shows for a week once at least 5 anglers share catches of it.
From anglers who chose to share their catches in HuntGrid Fishing, each counted once, counts rounded to the nearest 5, published 3 days after the week ends and never changed. Never a spot, time or name.
About this page
Sources and licences:
- Natural Resources Canada, CanVec Hydro Features (1:50,000). Contains information licensed under the Open Government Licence – Canada.; Natural Resources Canada, Canadian Geographical Names Database (CGNDB); Adapted from Statistics Canada, 2021 Census Boundary Files (census divisions, provinces). This does not constitute an endorsement by Statistics Canada of this product. · Open Government Licence – Canada 2.0
- Fish species lists: Ontario Ministry of Natural Resources, Aquatic Resource Area polygon segments. Contains information licensed under the Open Government Licence – Ontario · Open Government Licence – Ontario v1.0 (https://www.ontario.ca/page/open-government-licence-ontario, checked 2026-10-19): "The Information Provider grants you a worldwide, royalty-free, perpetual, non-exclusive licence to use the Information, including for commercial purposes" … "Copy, modify, publish, translate, adapt, distribute or otherwise use the Information in any medium, mode or format for any lawful purpose." data.ontario.ca aquatic-resource-area-polygon-segment: licence OGL-ON-1.0, access open; the map service: "This data is subject to terms of use. https://www.ontario.ca/page/open-government-licence-ontario".
- Fish surveys: Ontario Ministry of Natural Resources, Aquatic Resource Area survey points. Contains information licensed under the Open Government Licence – Ontario · Open Government Licence – Ontario v1.0 (https://www.ontario.ca/page/open-government-licence-ontario, checked 2026-10-19): "The Information Provider grants you a worldwide, royalty-free, perpetual, non-exclusive licence to use the Information, including for commercial purposes" … "Copy, modify, publish, translate, adapt, distribute or otherwise use the Information in any medium, mode or format for any lawful purpose." data.ontario.ca aquatic-resource-area-survey-point: licence OGL-ON-1.0, access open.
- Fish stocking: Ontario Ministry of Natural Resources. Contains information licensed under the Open Government Licence – Ontario · Open Government Licence – Ontario v1.0 (https://www.ontario.ca/page/open-government-licence-ontario, checked 2026-10-16): "The Information Provider grants you a worldwide, royalty-free, perpetual, non-exclusive licence to use the Information, including for commercial purposes" … "Copy, modify, publish, translate, adapt, distribute or otherwise use the Information in any medium, mode or format for any lawful purpose." data.ontario.ca record fish-stocking and its ArcGIS item: licence OGL-ON-1.0.
The outline is drawn from the official water data credited above, without a basemap. These pages show no angler's catches, spots or tracks.