Captain’s Log — Wednesday, September 30, 2026
Conditions on the Trent-Severn Waterway. Trenton → Georgian Bay, km 0–386.
Open water first: strong wind warning on Georgian Bay. If your day involves the crossing, check the marine forecast below before you commit to it.
Burnt River is the low spot on the system today at -16 cm (-6.2 in) against its usual level for this month. Sturgeon Lake, Otonabee / Peterborough are also running low. That doesn’t move the chart — it moves what’s under your keel.
All 40 locks and 12 bridges are showing operable on the Parks Canada feed.
Shoulder season. Traffic thins, lock hours start shrinking, and the nights get cold enough to matter.
On the water today
| Where | Now | Wind | Today |
|---|---|---|---|
| Trenton Lock 1 — Bay of Quinte |
Mostly Cloudy, 10.6°C | NE 3 kt (gust 15) | Mainly cloudy. |
| Peterborough Locks 19–21 — Otonabee |
Mist, 14.9°C | SSE 4 kt (gust 16) | A mix of sun and cloud. |
| Fenelon Falls Locks 34–35 — Kawartha Lakes |
Mist, 14.9°C | SSE 4 kt (gust 16) | A mix of sun and cloud. |
| Orillia Locks 41–42 — Simcoe/Couchiching |
10.3°C | — | A mix of sun and cloud. |
| Midland Lock 45 — Georgian Bay |
10.3°C | — | A mix of sun and cloud. |
Sunrise 07:10, sunset 18:56 at Peterborough (Eastern).
Seasonal normal for the date: Low plus 5. High 16.
Open water — Simcoe and Georgian Bay
The two stretches on the waterway where the forecast actually decides your day.
Lake Simcoe
- Wind: Wind south 10 knots veering to southwest 10 near midnight then increasing to southwest 15 Thursday morning.
- Weather: Periods of rain this afternoon tonight and Thursday.
- Covers: Today Tonight and Thursday.
Observed at the buoy, Sep 30, 2026 4:00 am ET: SSW 11.7 kt, seas 0.4 m (1.3 ft) at a 2-second period, water 17.8 °C.
Georgian Bay
⚠ Strong wind warning — in effect.
- Wind: Wind south 15 knots increasing to southwest 20 this afternoon then diminishing to southwest 15 near midnight. Wind veering to west 15 Thursday evening.
- Waves: Waves 0.5 metres or less building to 0.5 to 1 early this morning.
- Weather: Scattered showers this afternoon tonight and Thursday.
- Covers: Today Tonight and Thursday.
Along the waterway
Reported in the corridor over the last few days. Headlines are the publishers’ own — follow the link for the current state of any story, since these move faster than a daily post can.
- Kawartha Lakes Recognizes The Power Of Mentorship With Big Brothers Big Sisters Month — Kawartha 411, Sep 29
Water levels
Each gauge is compared against its own historical average for this month. The deviation is the number that matters — gauge datum is not chart datum, so the reading itself won’t tell you a depth, but the change from normal tells you how today compares to a typical day this time of year.
| Gauge | Pool | vs. normal | |
|---|---|---|---|
| Trenton | Bay of Quinte to Lock 1 | -3 cm (-1.2 in) | 🔵 |
| Lower Glen Ross | Lock 6 to Lock 8 Pool | -2 cm (-0.7 in) | 🔵 |
| Upper Glen Ross | Lock 8 to Lock 11 Pool | +1 cm (+0.5 in) | 🔵 |
| Crowe River | Crowe River Tributary | -7 cm (-2.7 in) | 🟠 |
| Indian River | Indian River to Rice Lake | -1 cm (-0.4 in) | 🔵 |
| Otonabee / Peterborough | Rice Lake to Lock 20 Pool | -13 cm (-5.0 in) | 🔴 |
| Sturgeon Lake | Sturgeon Lake / Fenelon Falls Pool | -13 cm (-5.3 in) | 🔴 |
| Burnt River | Burnt River to Balsam Lake | -16 cm (-6.2 in) | 🔴 |
| Gull River | Gull River to Balsam Lake | +3 cm (+1.1 in) | 🔵 |
| Head River | Head River to Lake Simcoe | +2 cm (+1.0 in) | 🔵 |
| Severn / Couchiching | Lake Couchiching Outflow | +2 cm (+1.0 in) | 🔵 |
| Wasdell Falls | Sparrow Lake to Big Chute Pool | +11 cm (+4.4 in) | 🟢 |
🔴 more than 10 cm low · 🟠 5–10 cm low · 🔵 within 5 cm of normal · 🟢 above normal. Live readings and 30-day charts →
Locks and bridges
All 40 locks and 12 bridges on the Parks Canada feed are reporting operable.
Parks Canada status last synced 2026-09-30 05:00:03 ET.
Sécurité — navigational warnings
3 warning(s) published in the last seven days:
- NW-C-4118-26 — Midland — Channel Obstruction, 2026-09-25
Vicinity: Midland Category: Obstruction (Other) Deadhead reported in the vicinity of 44 46.06N 079 49.26W at 251633 UTC Sep 2026. Deadhead is visible 0.25 metres above the surface. Charts: 2202(NAD83), 2241(NAD83) - NW-C-4117-26 — Midland — Other, 2026-09-25
Vicinity: Midland Category: Deadhead Adrift Deadhead reported adrift in the vicinity of 44 46.06N 079 49.26W at 251633 UTC Sep 2026. Deadhead is visible 0.25 metres above the surface. Charts: 2202(NAD83), 2241(NAD83) - NW-C-4101-26 — Rose Island — Other, 2026-09-24
Vicinity: Rose Island Category: Scientific Moorings Scientific mooring temporarily established at 45 19.763N 080 07.393W, unlit. Charts: 2202(NAD83), 2203(NAD83), 2224(NAD83), 2225(NAD27); Horizontal positions are based on NAD83.
Sources: Environment and Climate Change Canada (weather, marine and hydrometric data, Open Government Licence — Canada); Parks Canada Trent-Severn Waterway lockstation status; Canadian Coast Guard NAVWARNs; regional news headlines as published and linked to their sources. Water gauge readings are on assumed datum and are not chart datum.
This is not a substitute for official sources. Conditions change faster than any daily post. Check Parks Canada before you travel and carry current charts.
Compiled 2026-09-30 06:00 ET from live feeds.