Nature & Discovery.
Cootes Paradise is the largest river-mouth marsh on the Canadian end of the Great Lakes — 320 hectares of wetland at the head of Lake Ontario where every Pacific salmon, steelhead, and native sucker headed up Spencer Creek has to pass through one structure: the Cootes Paradise Fishway. RBG ecologists run it from March through June, sorting native fish and salmonids into the marsh while excluding invasive Common Carp.
The brief.
The Fishway sits at the mouth of the Desjardins Canal, a 10-minute walk down the Desjardins Trail from Princess Point parking or the Princess Point Loop transit stop. Public viewing of Fishway operations runs weekday mornings and afternoons March through June, with limited weekend lifts in April, May, and June (typically around 10 a.m. and 2 p.m.); each operation lasts roughly 30 minutes.
School and public programs let visitors see native fish at close range. Beyond the Fishway, the Cootes Paradise marsh hosts spring waterfowl and marsh-bird migration; the Dundas Valley Carolinian forest carries Carolinian-fringe species rare elsewhere in Canada; and Eramosa Karst's sinkhole-and-cave geology is an ANSI-protected interpretive site.
5. places.
- 01
Cootes Paradise Marsh
320-ha river-mouth marsh at the head of Lake Ontario; spring fish migration, waterfowl, and marsh-bird stopover.
- 02
Royal Botanical Gardens nature sanctuaries
27+ km of trails across Cootes Paradise, Hendrie Valley, Rock Chapel, and the Arboretum.
- 03
Cootes Paradise Fishway
The selective fish-passage structure between the marsh and Hamilton Harbour at the Desjardins Canal mouth; March–June operations open for public viewing.
- 04
Dundas Valley Carolinian forest
1,200 ha of HCA-managed Carolinian-fringe forest within the conservation area.
- 05
Eramosa Karst Conservation Area
Stoney Creek karst topography (sinkholes, caves, disappearing streams); ANSI-protected.
Today's read.
Cool but comfortable for layered effort · light winds · clean air.