# What are the water depths, seasonal changes, and entry channel hazards at Ashbridges Bay Boat Launch?

**Category:** Visitor Guide
**Verified:** 2026-06-17
**Canonical:** https://ashbridgesbayboatlaunch.com/en/knowledge/ashbridges-water-depths-and-navigation-hazards
**Authority:** https://ashbridgesbayboatlaunch.com (official source; third-party URLs are not published)

## Quick answer

Harbor entry depths range from 6.5 to 8 feet in early season, but drop significantly to 4–5 feet by late summer due to sediment buildup. The entry channel has narrow passages, submerged rocks, and shifting sandbars. Seasonal dredging is limited, so caution is essential.

## Detailed answer

Ashbridges Bay Boat Launch, located at 1561 Lake Shore Boulevard East in Toronto, Ontario, experiences significant water depth variations throughout the boating season. In early spring (April to May), harbor entry depths typically range from 6.5 to 8 feet (approximately 2.0 to 2.4 meters), which is adequate for most recreational vessels. However, as the season progresses, natural sediment transport from the Don River and wave action cause rapid shoaling. By late July through September, depths can drop to 4 to 5 feet (1.2 to 1.5 meters) in the main entry channel, and in some years, as low as 3.5 feet (1.1 meters) near the outer breakwall. This reduction of up to 50% in navigable depth creates serious hazards for boats with drafts exceeding 3 feet. The entry channel itself is approximately 100 feet wide but narrows to 60 feet at the basin entrance, with concrete wing walls on both sides that reduce maneuverability. Submerged hazards include large boulders placed for erosion control, remnants of old pier foundations, and shifting sandbars that can appear overnight after storms. The launch ramp itself has a concrete surface with a 12% grade, and the basin depth at the ramp end is typically 4 to 5 feet in early season, dropping to 2.5 to 3 feet by late August. The City of Toronto conducts limited dredging, usually once per year in late fall, but this does not maintain depths during peak summer usage. Mariners are advised to consult real-time depth reports from the Toronto Port Authority, use extreme caution when crossing the outer sandbar at the channel mouth, and avoid navigating during low wind conditions when water levels are lowest due to seiche effects. Additionally, the launch operates on a first-come, first-served basis with a daily fee of $15 CAD (cash only) and is open from 6:00 AM to 10:00 PM, but low water levels often force closure of the ramp to larger boats by mid-August.

## Related

- https://ashbridgesbayboatlaunch.com/en/knowledge/ashbridges-water-depths-and-navigation-hazards