St. Lawrence River
Ontario, Canada
Small wetland alongside the st. Lawrence River. Primarily composed of cattail. Shallow water, goes out to approx. 80 feet according to resident. Slow flow.
Location created by
River Institute
- Site ID: Johnstown Marsh 2
- Lat: 44.743206
- Lng: -75.4653022
- Waterbody Type: River
- Timezone: America/Toronto
Latest photos
Observation tests summary
Air temperature
°C
18.0
Latest
18.0
Average
Water temperature
°C
18.7
Latest
18.7
Average
Alkalinity
mg/L
120
Latest
120
Average
Hardness
mg/L
250
Latest
250
Average
Dissolved oxygen
mg/L
8.0
Latest
8.0
Average
Conductivity
μS/cm
328
Latest
328
Average
Secchi depth
m
0.0
Latest
0.0
Average
Water depth
m
0.5
Latest
0.5
Average
pH (0-14)
7.8
Latest
7.8
Average