Map of Simmons Lake

Simmons Lake

45.6048° N, 79.6961° W

Shoreline and neighbouring water from open government data.

Download the map (SVG)

Simmons Lake covers 0.39 km², making it smaller than 58% of the 18,731 lakes in Ontario. It lies 2 km south of Ahmic Lake.

Area
0.39 km²
smaller than 58% of the 18,731 lakes in Ontario
Shoreline
3.8 km
shorter than 63% of the 18,731 lakes in Ontario
Water clarity
5.9 mSecchi depth, 2023
clearer than 89% of the 1,251 monitored lakes in Ontario
Elevation
298 m

Today on the water

9.8 °C

Observed at Dunchurch, as of 8:00 a.m. EDT

choppy Estimated waves, next 12 hours: up to 0.2 m. Around 12 p.m., wind from the northwest: the northwest shore is sheltered, waves build toward the southeast shore.

Hourly forecast, next 24 hours
Time9 a.m.12 p.m.3 p.m.6 p.m.9 p.m.12 a.m.3 a.m.6 a.m.
Wind km/hW 15NW 30NW 30NW 15var. 5var. 5var. 5var. 5
Gusts km/h5050
Waves (est.) m0.10.20.20.10.1
Temp. °C71013127322
Precip. %302020200000

Today: A mix of sun and cloud. 60 percent chance of showers this morning. Risk of a thunderstorm early this morning. Wind becoming northwest 30 km/h gusting to 50 near noon. High 14. UV index 4 or moderate.

Weather: Dunchurch (local forecast), as of 8:01 a.m. EDT

Sun and moon

Civil dawn
6:57 a.m.
Sunrise
7:27 a.m.
Sunset
6:43 p.m.
Civil dusk
7:13 p.m.
Moonrise
6:19 a.m.
Moonset
6:02 p.m.
Moon
Waning crescent, 1% lit

Air Quality Health Index

1 low risk

Parry Sound, as of 8:00 a.m. EDT

Data Source: Environment and Climate Change Canada. Local times.

How waves are estimated

Significant wave height from the forecast hourly wind and the open-water distance (fetch) upwind, using the SMB method (US Army Corps of Engineers Shore Protection Manual, 1984), rounded up to the next 0.1 m. It is not a measurement: gusts, leftover swell and shoals can make water rougher. Under 0.2 m: calm; 0.2–0.5 m: choppy; over 0.5 m: rough.

Water

Clarity was measured with a Secchi disk in 7 years between 2014 and 2023; the latest annual mean is 5.9 m.

Water clarity (Secchi depth, m)
Total phosphorus (µg/L)