St. Mary Reservoir at Spring Coulee
Water level and flow at gauge 05AE025, Alberta. The level is normal for October. In the last 24 hours it has been steady.
Latest reading Oct 25, 7 AM local standard time (about an hour ago) · data checked · we check every 30 minutes
Compared with a normal October
Normal for October (middle half of 61 years of monthly averages): 1,094.14 m3,589.70 ft – 1,099.87 m3,608.50 ft, median 1,097.91 m3,602.06 ft.
June 24, 2014 · approved records 1954–2025 (HYDAT). Right now the level is 8.14 m26.71 ft below that record.
1.37 m4.50 ft higher than on October 25, 2025 (1,094.20 m3,589.91 ft)
approved daily mean (HYDAT)
Last 30 days
Hourly readings · shaded: normal range for this month
This year compared with past years
Daily water level
Normal range: monthly averages of 61 years (lighter band: 10th–90th percentile). Past years: approved daily means from HYDAT, the Water Survey of Canada archive (the latest year published is 2025). 2026: daily means of the provisional real-time readings collected by Canada River Levels since October 22, 2026.
Weather near this gauge
Cloudy. 60 percent chance of flurries this morning and early this afternoon. Wind up to 15 km/h. High plus 3. Wind chill minus 7 this morning. UV index 1 or low.
Mainly cloudy. Wind up to 15 km/h. Low minus 7. Wind chill minus 10 overnight.
A mix of sun and cloud. Becoming cloudy near noon. Wind up to 15 km/h. High 6. Wind chill minus 10 in the morning. UV index 2 or low.
Increasing cloudiness. Low minus 2.
Forecast for Cardston (23 km away) from Environment and Climate Change Canada, issued . Full official forecast ↗ · we check for new forecasts every 2 hours.
Nearby gauges
| Magrath Irrigation District CanalSpring Coulee · 5 km | — | Very low |
| Canadian St. Mary CanalSpring Coulee · 6 km | 0.36 m1.17 ft | Very low |
| Lee CreekCardston · 22 km | 1.38 m4.53 ft | Normal |
| Prairie Blood CouleeLethbridge · 25 km | 0.62 m2.04 ft | Normal |
| Belly RiverGlenwood · 27 km | 0.73 m2.39 ft | Normal |
| Rolph CreekKimball · 27 km | 0.50 m1.63 ft | Below normal |
About this gauge
Station: 05AE025 · St. Mary Reservoir Near Spring Coulee
Location: 49.3631, -113.1146 · Alberta
Water levels are measured from a local reference point at each gauge, not from sea level, so they cannot be compared between gauges.
Official sources
For flood warnings, advisories and approved data, always use these official services:
Questions
What is the water level of the St. Mary Reservoir at Spring Coulee today?
The latest reading (Oct 25, 7 AM, local standard time) is 1,095.58 m (3,594.41 ft).
Is the St. Mary Reservoir at Spring Coulee high right now?
The level is normal for October.
Is the St. Mary Reservoir rising or falling?
In the last 24 hours it has been steady.
What is the highest water level ever recorded on the St. Mary Reservoir at Spring Coulee?
1,103.72 m (3,621.12 ft) on June 24, 2014, the highest instantaneous level in the approved records of the Water Survey of Canada (1954–2025). Events after 2025 are not yet in the approved archive.
How does the St. Mary Reservoir at Spring Coulee compare with a year ago?
The level is 1.37 m (4.50 ft) higher than on October 25, 2025 (1,094.20 m (3,589.91 ft), approved daily mean (HYDAT)).
Where does this data come from?
Gauge 05AE025 of the Water Survey of Canada (Environment and Climate Change Canada). Real-time data are provisional and may be revised. We check for new readings every 30 minutes. Canada River Levels is not an official source.