AU SABLE RIVER NEAR SIDTOWN, MI
USGS 04137030 · Michigan · reports water temperature, dissolved oxygen
Reading AU SABLE RIVER NEAR SIDTOWN, MI…
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USGS 04137030 · Michigan · reports water temperature, dissolved oxygen
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, 8:45 PM EST · provisional USGS data
No flow at this gauge. USGS does not publish discharge here, so there are no flow statistics either; it reports what is shown. Flow on the same river: AU SABLE RIVER NEAR AU SABLE, MI (USGS 04137500, 7.2 miles away).
Water temperature, last 7 days: 168 readings from Oct 29, 10:45 PM EDT to Nov 5, 8:45 PM EST; ranging 54.1 to 55.8 °F; latest 55.6 °F.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Water temperature (°F) |
|---|---|
| Nov 5, 8:45 PM EST | 55.6 |
| Nov 5, 7:45 PM EST | 55.6 |
| Nov 5, 6:45 PM EST | 55.6 |
| Nov 5, 5:45 PM EST | 55.6 |
| Nov 5, 4:45 PM EST | 55.6 |
| Nov 5, 3:45 PM EST | 55.6 |
| Nov 5, 2:45 PM EST | 55.6 |
| Nov 5, 1:45 PM EST | 55.6 |
| Nov 5, 12:45 PM EST | 55.4 |
| Nov 5, 11:45 AM EST | 55.4 |
| Nov 5, 10:45 AM EST | 55.2 |
| Nov 5, 9:45 AM EST | 55.4 |
| Nov 5, 8:45 AM EST | 55.4 |
| Nov 5, 7:45 AM EST | 55.4 |
| Nov 5, 6:45 AM EST | 55.6 |
| Nov 5, 5:45 AM EST | 55.6 |
| Nov 5, 4:45 AM EST | 55.6 |
| Nov 5, 3:45 AM EST | 55.6 |
| Nov 5, 2:45 AM EST | 55.8 |
| Nov 5, 1:45 AM EST | 55.6 |
| Nov 5, 12:45 AM EST | 55.6 |
| Nov 4, 11:45 PM EST | 55.6 |
| Nov 4, 10:45 PM EST | 55 |
| Nov 4, 9:45 PM EST | 54.9 |
| Nov 4, 8:45 PM EST | 54.7 |
| Nov 4, 7:45 PM EST | 54.5 |
| Nov 4, 6:45 PM EST | 54.7 |
| Nov 4, 5:45 PM EST | 54.5 |
| Nov 4, 4:45 PM EST | 54.5 |
| Nov 4, 3:45 PM EST | 54.5 |
| Nov 4, 2:45 PM EST | 54.5 |
| Nov 4, 1:45 PM EST | 54.7 |
| Nov 4, 12:45 PM EST | 54.9 |
| Nov 4, 11:45 AM EST | 54.9 |
| Nov 4, 10:45 AM EST | 54.9 |
| Nov 4, 9:45 AM EST | 54.9 |
| Nov 4, 8:45 AM EST | 55 |
| Nov 4, 7:45 AM EST | 55.2 |
| Nov 4, 6:45 AM EST | 55.2 |
| Nov 4, 5:45 AM EST | 55 |
| Nov 4, 4:45 AM EST | 55 |
| Nov 4, 3:45 AM EST | 55 |
| Nov 4, 2:45 AM EST | 54.9 |
| Nov 4, 1:45 AM EST | 54.9 |
| Nov 4, 12:45 AM EST | 54.9 |
| Nov 3, 11:45 PM EST | 54.9 |
| Nov 3, 10:45 PM EST | 54.9 |
| Nov 3, 9:45 PM EST | 55 |
| Nov 3, 8:45 PM EST | 55.2 |
| Nov 3, 7:45 PM EST | 55.4 |
| Nov 3, 6:45 PM EST | 55.4 |
| Nov 3, 5:45 PM EST | 55.4 |
| Nov 3, 4:45 PM EST | 55.2 |
| Nov 3, 3:45 PM EST | 55.2 |
| Nov 3, 2:45 PM EST | 55.2 |
| Nov 3, 1:45 PM EST | 55.2 |
| Nov 3, 12:45 PM EST | 55.2 |
| Nov 3, 11:45 AM EST | 55 |
| Nov 3, 10:45 AM EST | 54.9 |
| Nov 3, 9:45 AM EST | 54.9 |
| Nov 3, 8:45 AM EST | 54.7 |
| Nov 3, 7:45 AM EST | 54.7 |
| Nov 3, 6:45 AM EST | 54.9 |
| Nov 3, 5:45 AM EST | 54.5 |
| Nov 3, 4:45 AM EST | 54.5 |
| Nov 3, 3:45 AM EST | 54.5 |
| Nov 3, 2:45 AM EST | 54.5 |
| Nov 3, 1:45 AM EST | 54.5 |
| Nov 3, 12:45 AM EST | 54.3 |
| Nov 2, 11:45 PM EST | 54.3 |
| Nov 2, 10:45 PM EST | 54.3 |
| Nov 2, 9:45 PM EST | 54.3 |
| Nov 2, 8:45 PM EST | 54.3 |
| Nov 2, 7:45 PM EST | 54.3 |
| Nov 2, 6:45 PM EST | 54.3 |
| Nov 2, 5:45 PM EST | 54.1 |
| Nov 2, 4:45 PM EST | 54.3 |
| Nov 2, 3:45 PM EST | 54.3 |
| Nov 2, 2:45 PM EST | 54.3 |
| Nov 2, 1:45 PM EST | 54.5 |
| Nov 2, 12:45 PM EST | 54.7 |
| Nov 2, 11:45 AM EST | 54.7 |
| Nov 2, 10:45 AM EST | 54.7 |
| Nov 2, 9:45 AM EST | 54.5 |
| Nov 2, 8:45 AM EST | 54.5 |
| Nov 2, 7:45 AM EST | 54.5 |
| Nov 2, 6:45 AM EST | 54.5 |
| Nov 2, 5:45 AM EST | 54.5 |
| Nov 2, 4:45 AM EST | 54.5 |
| Nov 2, 3:45 AM EST | 54.5 |
| Nov 2, 2:45 AM EST | 54.5 |
| Nov 2, 1:45 AM EST | 54.5 |
| Nov 2, 12:45 AM EST | 54.5 |
| Nov 1, 11:45 PM EST | 54.7 |
| Nov 1, 10:45 PM EST | 54.9 |
| Nov 1, 9:45 PM EST | 54.9 |
| Nov 1, 8:45 PM EST | 54.7 |
| Nov 1, 7:45 PM EST | 54.7 |
| Nov 1, 6:45 PM EST | 54.7 |
| Nov 1, 5:45 PM EST | 54.7 |
| Nov 1, 4:45 PM EST | 54.9 |
| Nov 1, 3:45 PM EST | 55 |
| Nov 1, 2:45 PM EST | 55.2 |
| Nov 1, 1:45 PM EST | 54.9 |
| Nov 1, 12:45 PM EST | 54.7 |
| Nov 1, 11:45 AM EST | 54.7 |
| Nov 1, 10:45 AM EST | 54.5 |
| Nov 1, 9:45 AM EST | 54.5 |
| Nov 1, 8:45 AM EST | 54.5 |
| Nov 1, 7:45 AM EST | 54.5 |
| Nov 1, 6:45 AM EST | 54.5 |
| Nov 1, 5:45 AM EST | 54.5 |
| Nov 1, 4:45 AM EST | 54.5 |
| Nov 1, 3:45 AM EST | 54.5 |
| Nov 1, 2:45 AM EST | 54.7 |
| Nov 1, 1:45 AM EST | 54.7 |
| Nov 1, 1:45 AM EDT | 54.7 |
| Nov 1, 12:45 AM EDT | 54.7 |
| Oct 31, 11:45 PM EDT | 54.7 |
| Oct 31, 10:45 PM EDT | 54.7 |
| Oct 31, 9:45 PM EDT | 54.7 |
| Oct 31, 8:45 PM EDT | 54.7 |
| Oct 31, 7:45 PM EDT | 54.7 |
| Oct 31, 6:45 PM EDT | 54.7 |
| Oct 31, 5:45 PM EDT | 54.7 |
| Oct 31, 4:45 PM EDT | 54.7 |
| Oct 31, 3:45 PM EDT | 54.7 |
| Oct 31, 2:45 PM EDT | 54.7 |
| Oct 31, 1:45 PM EDT | 54.7 |
| Oct 31, 12:45 PM EDT | 54.7 |
| Oct 31, 11:45 AM EDT | 54.7 |
| Oct 31, 10:45 AM EDT | 54.7 |
| Oct 31, 9:45 AM EDT | 54.7 |
| Oct 31, 8:45 AM EDT | 54.7 |
| Oct 31, 7:45 AM EDT | 54.9 |
| Oct 31, 6:45 AM EDT | 54.9 |
| Oct 31, 5:45 AM EDT | 54.9 |
| Oct 31, 4:45 AM EDT | 54.9 |
| Oct 31, 3:45 AM EDT | 55 |
| Oct 31, 2:45 AM EDT | 55 |
| Oct 31, 1:45 AM EDT | 55 |
| Oct 31, 12:45 AM EDT | 55 |
| Oct 30, 11:45 PM EDT | 55 |
| Oct 30, 10:45 PM EDT | 55.2 |
| Oct 30, 9:45 PM EDT | 55.2 |
| Oct 30, 8:45 PM EDT | 55.2 |
| Oct 30, 7:45 PM EDT | 55.2 |
| Oct 30, 6:45 PM EDT | 55.4 |
| Oct 30, 5:45 PM EDT | 55.4 |
| Oct 30, 4:45 PM EDT | 55.6 |
| Oct 30, 3:45 PM EDT | 55.6 |
| Oct 30, 2:45 PM EDT | 55.6 |
| Oct 30, 1:45 PM EDT | 55.4 |
| Oct 30, 12:45 PM EDT | 55.4 |
| Oct 30, 11:45 AM EDT | 55.2 |
| Oct 30, 10:45 AM EDT | 55.2 |
| Oct 30, 9:45 AM EDT | 55.2 |
| Oct 30, 8:45 AM EDT | 55.4 |
| Oct 30, 7:45 AM EDT | 55.4 |
| Oct 30, 6:45 AM EDT | 55.4 |
| Oct 30, 5:45 AM EDT | 55.6 |
| Oct 30, 4:45 AM EDT | 55.6 |
| Oct 30, 3:45 AM EDT | 55.6 |
| Oct 30, 2:45 AM EDT | 55.6 |
| Oct 30, 1:45 AM EDT | 55.8 |
| Oct 30, 12:45 AM EDT | 55.8 |
| Oct 29, 11:45 PM EDT | 55.8 |
| Oct 29, 10:45 PM EDT | 55.8 |
Map of USGS gauge 04137030 and the river around it
Where AU SABLE RIVER NEAR SIDTOWN, MI sits, with 5 other gauges on the same river and our water's map point.
Federal guidance. 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:
Under the federal 68°F line. Water 55.6°F now; the highest in the last 24 hours was 55.8°F. That is under the 68°F at which the National Park Service, at Grand Teton National Park, recommends anglers stop fishing in the afternoon (“cease fishing at 2 p.m. when water temperatures are likely to exceed 68°F”). Water warms through the afternoon, so check again later in the day: “Carry a pocket thermometer to monitor water temperature.”
High water temperatures prompt fishing advisory in Grand Teton National Park (29 July 2022) (National Park Service)This gauge is on the same river as our page for Au Sable River, but no agency page we read lists its species.
Cold water. Water 55.6°F. NWS: “Cold shock can be just as severe and dangerous from water temperatures of 50-60°F (10-15°C) as it is from water at 35°F (2°C).” “Always wear a life jacket in and around the water.”
Cold Water Hazards and Safety (National Weather Service)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)Dissolved oxygen 9.9 mg/L at Nov 5, 8:45 PM EST; 7-day range 9.4–9.9 mg/L
Enough oxygen for coldwater fish: 9.9 mg/L meets the 6.5 mg/L EPA sets for coldwater fish (other life stages; eggs and fry need a 8 mg/L minimum).
Quality Criteria for Water 1986 (“Gold Book”): dissolved oxygen, Table 1; pH (U.S. Environmental Protection Agency)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, 9:39 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.