ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO
USGS 04127885 · Michigan · reports discharge (live), gauge height
Reading ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO…
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USGS 04127885 · Michigan · reports discharge (live), gauge height
What the agencies suggest
Carry a pocket thermometer to monitor water temperatureNational Park Service
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 8:00 PM EST · provisional USGS data
Below normal for Nov 5 Falling · 24 h
Discharge, last 7 days: 169 readings from Oct 29, 9:24 PM EDT to Nov 5, 8:00 PM EST; ranging 52,000 to 86,800 ft³/s; latest 56,800 ft³/s; shaded band: typical range (25th–75th percentile) for each date.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Gauge height (ft) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|
| Nov 5, 8:00 PM EST | 56,800 | 579 | 64,600–96,600 |
| Nov 5, 6:48 PM EST | 58,600 | – | 64,600–96,600 |
| Nov 5, 5:48 PM EST | 57,500 | – | 64,600–96,600 |
| Nov 5, 4:48 PM EST | 64,000 | – | 64,600–96,600 |
| Nov 5, 3:48 PM EST | 72,000 | – | 64,600–96,600 |
| Nov 5, 2:48 PM EST | 71,900 | – | 64,600–96,600 |
| Nov 5, 1:48 PM EST | 66,800 | – | 64,600–96,600 |
| Nov 5, 12:48 PM EST | 78,600 | – | 64,600–96,600 |
| Nov 5, 11:48 AM EST | 66,100 | – | 64,600–96,600 |
| Nov 5, 10:48 AM EST | 59,100 | – | 64,600–96,600 |
| Nov 5, 9:48 AM EST | 52,900 | – | 64,600–96,600 |
| Nov 5, 8:48 AM EST | 66,000 | – | 64,600–96,600 |
| Nov 5, 7:48 AM EST | 68,200 | – | 64,600–96,600 |
| Nov 5, 6:48 AM EST | 70,700 | – | 64,600–96,600 |
| Nov 5, 5:48 AM EST | 66,100 | – | 64,600–96,600 |
| Nov 5, 4:48 AM EST | 69,800 | – | 64,600–96,600 |
| Nov 5, 3:48 AM EST | 75,100 | – | 64,600–96,600 |
| Nov 5, 2:48 AM EST | 69,200 | – | 64,600–96,600 |
| Nov 5, 1:48 AM EST | 77,400 | – | 64,600–96,600 |
| Nov 5, 12:48 AM EST | 68,600 | – | 64,600–96,600 |
| Nov 4, 11:48 PM EST | 71,900 | – | 64,500–95,200 |
| Nov 4, 10:48 PM EST | 70,100 | – | 64,500–95,200 |
| Nov 4, 9:48 PM EST | 85,300 | – | 64,500–95,200 |
| Nov 4, 8:48 PM EST | 66,400 | – | 64,500–95,200 |
| Nov 4, 7:48 PM EST | 69,500 | – | 64,500–95,200 |
| Nov 4, 6:48 PM EST | 69,100 | – | 64,500–95,200 |
| Nov 4, 5:48 PM EST | 75,100 | – | 64,500–95,200 |
| Nov 4, 4:48 PM EST | 70,400 | – | 64,500–95,200 |
| Nov 4, 3:48 PM EST | 71,100 | – | 64,500–95,200 |
| Nov 4, 2:48 PM EST | 73,400 | – | 64,500–95,200 |
| Nov 4, 1:48 PM EST | 76,600 | – | 64,500–95,200 |
| Nov 4, 12:48 PM EST | 75,300 | – | 64,500–95,200 |
| Nov 4, 11:48 AM EST | 59,900 | – | 64,500–95,200 |
| Nov 4, 10:48 AM EST | 71,100 | – | 64,500–95,200 |
| Nov 4, 9:48 AM EST | 73,000 | – | 64,500–95,200 |
| Nov 4, 8:48 AM EST | 62,100 | – | 64,500–95,200 |
| Nov 4, 7:48 AM EST | 65,700 | – | 64,500–95,200 |
| Nov 4, 6:48 AM EST | 71,100 | – | 64,500–95,200 |
| Nov 4, 5:48 AM EST | 72,900 | – | 64,500–95,200 |
| Nov 4, 4:48 AM EST | 72,200 | – | 64,500–95,200 |
| Nov 4, 3:48 AM EST | 66,100 | – | 64,500–95,200 |
| Nov 4, 2:48 AM EST | 69,100 | – | 64,500–95,200 |
| Nov 4, 1:48 AM EST | 68,300 | – | 64,500–95,200 |
| Nov 4, 12:48 AM EST | 77,600 | – | 64,500–95,200 |
| Nov 3, 11:48 PM EST | 67,300 | – | 64,800–93,200 |
| Nov 3, 10:48 PM EST | 68,900 | – | 64,800–93,200 |
| Nov 3, 9:48 PM EST | 66,200 | – | 64,800–93,200 |
| Nov 3, 8:48 PM EST | 75,800 | – | 64,800–93,200 |
| Nov 3, 7:48 PM EST | 77,900 | – | 64,800–93,200 |
| Nov 3, 6:48 PM EST | 76,900 | – | 64,800–93,200 |
| Nov 3, 5:48 PM EST | 81,000 | – | 64,800–93,200 |
| Nov 3, 4:48 PM EST | 69,600 | – | 64,800–93,200 |
| Nov 3, 3:48 PM EST | 74,900 | – | 64,800–93,200 |
| Nov 3, 2:48 PM EST | 75,700 | – | 64,800–93,200 |
| Nov 3, 1:48 PM EST | 64,500 | – | 64,800–93,200 |
| Nov 3, 12:48 PM EST | 70,100 | – | 64,800–93,200 |
| Nov 3, 11:48 AM EST | 84,600 | – | 64,800–93,200 |
| Nov 3, 10:48 AM EST | 73,300 | – | 64,800–93,200 |
| Nov 3, 9:48 AM EST | 73,800 | – | 64,800–93,200 |
| Nov 3, 8:48 AM EST | 62,300 | – | 64,800–93,200 |
| Nov 3, 7:48 AM EST | 73,300 | – | 64,800–93,200 |
| Nov 3, 6:48 AM EST | 74,500 | – | 64,800–93,200 |
| Nov 3, 5:48 AM EST | 76,300 | – | 64,800–93,200 |
| Nov 3, 4:48 AM EST | 75,200 | – | 64,800–93,200 |
| Nov 3, 3:48 AM EST | 74,300 | – | 64,800–93,200 |
| Nov 3, 2:48 AM EST | 78,900 | – | 64,800–93,200 |
| Nov 3, 1:48 AM EST | 75,800 | – | 64,800–93,200 |
| Nov 3, 12:48 AM EST | 67,600 | – | 64,800–93,200 |
| Nov 2, 11:48 PM EST | 73,300 | – | 58,400–92,600 |
| Nov 2, 10:48 PM EST | 79,900 | – | 58,400–92,600 |
| Nov 2, 9:48 PM EST | 74,900 | – | 58,400–92,600 |
| Nov 2, 8:48 PM EST | 86,100 | – | 58,400–92,600 |
| Nov 2, 7:48 PM EST | 75,800 | – | 58,400–92,600 |
| Nov 2, 6:48 PM EST | 70,300 | – | 58,400–92,600 |
| Nov 2, 5:48 PM EST | 69,900 | – | 58,400–92,600 |
| Nov 2, 4:48 PM EST | 74,800 | – | 58,400–92,600 |
| Nov 2, 3:48 PM EST | 74,500 | – | 58,400–92,600 |
| Nov 2, 2:48 PM EST | 65,100 | – | 58,400–92,600 |
| Nov 2, 1:48 PM EST | 72,300 | – | 58,400–92,600 |
| Nov 2, 12:48 PM EST | 60,800 | – | 58,400–92,600 |
| Nov 2, 11:48 AM EST | 71,100 | – | 58,400–92,600 |
| Nov 2, 10:48 AM EST | 77,600 | – | 58,400–92,600 |
| Nov 2, 9:48 AM EST | 72,200 | – | 58,400–92,600 |
| Nov 2, 8:48 AM EST | 63,900 | – | 58,400–92,600 |
| Nov 2, 7:48 AM EST | 77,200 | – | 58,400–92,600 |
| Nov 2, 6:48 AM EST | 72,000 | – | 58,400–92,600 |
| Nov 2, 5:48 AM EST | 77,500 | – | 58,400–92,600 |
| Nov 2, 4:48 AM EST | 71,900 | – | 58,400–92,600 |
| Nov 2, 3:48 AM EST | 79,900 | – | 58,400–92,600 |
| Nov 2, 2:48 AM EST | 75,200 | – | 58,400–92,600 |
| Nov 2, 1:48 AM EST | 68,400 | – | 58,400–92,600 |
| Nov 2, 12:48 AM EST | 69,300 | – | 58,400–92,600 |
| Nov 1, 11:48 PM EST | 72,500 | – | 58,200–96,700 |
| Nov 1, 10:48 PM EST | 54,600 | – | 58,200–96,700 |
| Nov 1, 9:48 PM EST | 67,900 | – | 58,200–96,700 |
| Nov 1, 8:48 PM EST | 72,900 | – | 58,200–96,700 |
| Nov 1, 7:48 PM EST | 71,200 | – | 58,200–96,700 |
| Nov 1, 6:48 PM EST | 86,800 | – | 58,200–96,700 |
| Nov 1, 5:48 PM EST | 68,600 | – | 58,200–96,700 |
| Nov 1, 4:48 PM EST | 70,600 | – | 58,200–96,700 |
| Nov 1, 3:48 PM EST | 70,700 | – | 58,200–96,700 |
| Nov 1, 2:48 PM EST | 68,000 | – | 58,200–96,700 |
| Nov 1, 1:48 PM EST | 62,100 | – | 58,200–96,700 |
| Nov 1, 12:48 PM EST | 67,100 | – | 58,200–96,700 |
| Nov 1, 11:48 AM EST | 79,700 | – | 58,200–96,700 |
| Nov 1, 10:48 AM EST | 69,800 | – | 58,200–96,700 |
| Nov 1, 9:48 AM EST | 65,200 | – | 58,200–96,700 |
| Nov 1, 8:48 AM EST | 66,100 | – | 58,200–96,700 |
| Nov 1, 7:48 AM EST | 65,500 | – | 58,200–96,700 |
| Nov 1, 6:48 AM EST | 68,000 | – | 58,200–96,700 |
| Nov 1, 5:48 AM EST | 68,800 | – | 58,200–96,700 |
| Nov 1, 4:48 AM EST | 85,600 | – | 58,200–96,700 |
| Nov 1, 3:48 AM EST | 69,200 | – | 58,200–96,700 |
| Nov 1, 2:48 AM EST | 62,800 | – | 58,200–96,700 |
| Nov 1, 1:48 AM EST | 71,600 | – | 58,200–96,700 |
| Nov 1, 1:48 AM EDT | 67,100 | – | 58,200–96,700 |
| Nov 1, 12:48 AM EDT | 73,300 | – | 64,500–94,100 |
| Oct 31, 11:48 PM EDT | 64,200 | – | 64,500–94,100 |
| Oct 31, 10:48 PM EDT | 74,500 | – | 64,500–94,100 |
| Oct 31, 9:48 PM EDT | 69,700 | – | 64,500–94,100 |
| Oct 31, 8:48 PM EDT | 77,200 | – | 64,500–94,100 |
| Oct 31, 7:48 PM EDT | 81,400 | – | 64,500–94,100 |
| Oct 31, 6:48 PM EDT | 76,000 | – | 64,500–94,100 |
| Oct 31, 5:48 PM EDT | 68,200 | – | 64,500–94,100 |
| Oct 31, 4:48 PM EDT | 63,300 | – | 64,500–94,100 |
| Oct 31, 3:48 PM EDT | 72,500 | – | 64,500–94,100 |
| Oct 31, 2:48 PM EDT | 76,600 | – | 64,500–94,100 |
| Oct 31, 1:48 PM EDT | 82,100 | – | 64,500–94,100 |
| Oct 31, 12:48 PM EDT | 62,300 | – | 64,500–94,100 |
| Oct 31, 11:48 AM EDT | 69,900 | – | 64,500–94,100 |
| Oct 31, 10:48 AM EDT | 80,400 | – | 64,500–94,100 |
| Oct 31, 9:48 AM EDT | 78,800 | – | 64,500–94,100 |
| Oct 31, 8:48 AM EDT | 70,300 | – | 64,500–94,100 |
| Oct 31, 7:48 AM EDT | 72,300 | – | 64,500–94,100 |
| Oct 31, 6:48 AM EDT | 75,700 | – | 64,500–94,100 |
| Oct 31, 5:48 AM EDT | 72,600 | – | 64,500–94,100 |
| Oct 31, 4:48 AM EDT | 75,400 | – | 64,500–94,100 |
| Oct 31, 3:48 AM EDT | 72,500 | – | 64,500–94,100 |
| Oct 31, 2:48 AM EDT | 84,000 | – | 64,500–94,100 |
| Oct 31, 1:48 AM EDT | 69,200 | – | 64,500–94,100 |
| Oct 31, 12:48 AM EDT | 63,200 | – | 65,500–93,400 |
| Oct 30, 11:48 PM EDT | 78,500 | – | 65,500–93,400 |
| Oct 30, 10:48 PM EDT | 66,000 | – | 65,500–93,400 |
| Oct 30, 9:48 PM EDT | 62,600 | – | 65,500–93,400 |
| Oct 30, 8:48 PM EDT | 72,400 | – | 65,500–93,400 |
| Oct 30, 7:48 PM EDT | 63,600 | – | 65,500–93,400 |
| Oct 30, 6:48 PM EDT | 81,700 | – | 65,500–93,400 |
| Oct 30, 5:48 PM EDT | 67,900 | – | 65,500–93,400 |
| Oct 30, 4:48 PM EDT | 62,700 | – | 65,500–93,400 |
| Oct 30, 3:48 PM EDT | 60,000 | – | 65,500–93,400 |
| Oct 30, 2:48 PM EDT | 59,600 | – | 65,500–93,400 |
| Oct 30, 1:48 PM EDT | 69,600 | – | 65,500–93,400 |
| Oct 30, 12:48 PM EDT | 64,900 | – | 65,500–93,400 |
| Oct 30, 11:48 AM EDT | 70,100 | – | 65,500–93,400 |
| Oct 30, 10:48 AM EDT | 71,100 | – | 65,500–93,400 |
| Oct 30, 9:48 AM EDT | 57,700 | – | 65,500–93,400 |
| Oct 30, 8:48 AM EDT | 66,100 | – | 65,500–93,400 |
| Oct 30, 7:48 AM EDT | 63,000 | – | 65,500–93,400 |
| Oct 30, 6:48 AM EDT | 59,400 | – | 65,500–93,400 |
| Oct 30, 5:48 AM EDT | 59,000 | – | 65,500–93,400 |
| Oct 30, 4:48 AM EDT | 56,400 | – | 65,500–93,400 |
| Oct 30, 3:48 AM EDT | 72,900 | – | 65,500–93,400 |
| Oct 30, 2:48 AM EDT | 65,600 | – | 65,500–93,400 |
| Oct 30, 1:48 AM EDT | 60,600 | – | 65,500–93,400 |
| Oct 30, 12:48 AM EDT | 73,600 | – | 65,300–95,100 |
| Oct 29, 11:48 PM EDT | 59,200 | – | 65,300–95,100 |
| Oct 29, 10:48 PM EDT | 52,000 | – | 65,300–95,100 |
| Oct 29, 9:48 PM EDT | 58,300 | – | 65,300–95,100 |
| Oct 29, 9:24 PM EDT | 69,800 | 579 | 65,300–95,100 |
Map of USGS gauge 04127885 and the river around it
Where ST. MARYS RIVER AT SAULT STE. MARIE, ONTARIO sits and our water's map point.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer. Michigan DNR publishes no water-temperature line for trout anglers that we found. The lines below are the National Park Service's, federal guidance, not a Michigan rule: 68°F.
Species the agency lists for Saint Marys River: Atlantic Salmon.
Source: Fishing in the fall is fun when you target salmon and steelhead (Michigan Department of Natural Resources).
Normal for Nov 5: 64,600–96,600 ft³/s (middle half of 17 years of record). Now: 56,800 ft³/s, below normal.
Below normal for this date. 56,800 ft³/s is between the 10th and 25th percentiles of daily mean flow for Nov 5 at this gauge over 17 years of record (2010–2026): 10th 48,100, 25th 64,600, median 77,600, 75th 96,600, 90th 103,000 ft³/s.
Daily means on record for Nov 5: lowest 43,200 ft³/s, highest 112,000 ft³/s.
Classes as USGS labels them (hyswap: flow categories (WDFN_stats schema) (U.S. Geological Survey) ); percentiles from the USGS daily statistics (U.S. Geological Survey) (approved daily means; the reading is provisional and instantaneous).
Falling over 24 hours: discharge down 18.3%, from 69,500 to 56,800 ft³/s. Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 5, 8:23 PM EST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.