Lake Superior at Grand Marais Water Level
NOAA CO-OPS (Tides & Currents) · Minnesota
Latest reading Oct 26, 11:42 AM · elevation
Lake Superior at Grand Marais is at 601.83 ft today, 0.2 ft lower than a year ago. It has risen 0.09 ft since yesterday.
Water level chart
ft above sea levelReading
Lake Superior at Grand Marais fishing report & conditions
updated Oct 26, 12:50 PM ETWater 52°F, level steady, light ENE wind — good fall fishing day (7/10), best window 7:56 AM–8:56 AM (moonset near sunrise).
- Water temp52°Fmeasured Oct 26, 11:42 AM · the operator
- Air temphigh 43°F / low 35°FMostly Sunny
- WindLight ENE5–10 mph 6 AM–6 PM, gusts to 22
- Level601.83 ftLevel steady (+0.09 ft in 24 h)
Official Minnesota fishing info: Minnesota DNR — Fishing info & LakeFinder
Best fishing times today
Today is a good fishing day (solunar + local conditions)
7/10
Full moon · 99% lit · New moon Mon, Nov 9 · Sunrise 7:37 AM · Sunset 5:52 PM
Major fishing times
- Moon underfoot12:09 PM–2:09 PM
Minor fishing times
- Moonset7:56 AM–8:56 AMSunrise
- Moonrise5:13 PM–6:13 PMSunset
Fishing times for the next 7 days
| TodayOct 26 | 7/10Good | Major 12:09 PM–2:09 PM Minor 7:56 AM–8:56 AM · 5:13 PM–6:13 PM Light wind 5–10 mph |
|---|---|---|
| TueOct 27 | 5/10Fair | Major 12:38 AM–2:38 AM · 1:08 PM–3:08 PM Minor 9:21 AM–10:21 AM · 5:47 PM–6:47 PM Moderate wind 10–15 mph |
| WedOct 28 | 4/10Fair | Major 1:39 AM–3:39 AM · 2:11 PM–4:11 PM Minor 10:44 AM–11:44 AM · 6:33 PM–7:33 PM Light wind 4–6 mph |
| ThuOct 29 | 5/10Fair | Major 2:43 AM–4:43 AM · 3:15 PM–5:15 PM Minor 11:56 AM–12:56 PM · 7:35 PM–8:35 PM Light wind 7–10 mph |
| FriOct 30 | 3/10Poor | Major 3:47 AM–5:47 AM · 4:19 PM–6:19 PM Minor 12:53 PM–1:53 PM · 8:50 PM–9:50 PM Calm wind 2–5 mph |
| SatOct 31 | 5/10Fair | Major 4:49 AM–6:49 AM · 5:19 PM–7:19 PM Minor 1:35 PM–2:35 PM · 10:11 PM–11:11 PM Light wind 6–8 mph |
| SunNov 1 | 4/10Fair | Major 4:47 AM–6:47 AM · 5:14 PM–7:14 PM Minor 1:05 PM–2:05 PM · 10:34 PM–11:34 PM Calm wind 2–6 mph |
How this rating works
Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the lake level is steady, and the water temperature where it is measured.
| Base | every day starts at 1 | 1 |
|---|---|---|
| Sunrise / sunset | a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonset × sunrise +1; Moonrise × sunset +1) | 2 |
| Moon phase | within 2 days of a new or full moon +2, within 4 days +1 (today: 0.5 days) | 2 |
| Local conditions | pressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · level within ±0.25 ft in 24 h +1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
| 2 |
| Today | 7, rounded | 7/10 |
1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page; water temperature reported by the operator. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.
Solunar periods calculated for 47.75, -90.34 (moon times from astronomical equations, Lake Superior at Grand Marais local time).
Weather & wind at Lake Superior at Grand Marais
air temperature, not water3-day forecast
- Today43° / 35°Mostly SunnyWind E 5 to 10 mphRain 4%
- Tuesday47° / 43°Rain ShowersWind E 10 to 15 mphRain 92%
- Wednesday52° / 44°Partly Sunny then Slight Chance Rain ShowersWind SW 5 mphRain 88%
NOAA National Weather Service forecast for 47.749, -90.341 (grid DLH), issued Oct 26, 11:41 AM local time. High / low are air temperatures; water temperature is in the fishing section above. The “Air temp & weather” tile at the top refreshes live.
Past 12 months
daily readings from NOAA CO-OPS (Tides & Currents)- Today601.83 ft
- Same date last year602.01 ft−0.2 ft change
- 12-month high602.25 ftAug 30, 2026
- 12-month low600.85 ftMar 15, 2026
Last 10 days
| Date | Level (ft) | Change |
|---|---|---|
| Mon Oct 26 (today) | 601.83 | +0.05 |
| Sun Oct 25 | 601.78 | −0.13 |
| Sat Oct 24 | 601.91 | +0.03 |
| Fri Oct 23 | 601.88 | +0.03 |
| Thu Oct 22 | 601.84 | +0.02 |
| Wed Oct 21 | 601.83 | −0.04 |
| Tue Oct 20 | 601.86 | +0.01 |
| Mon Oct 19 | 601.85 | −0.15 |
| Tue Sep 29 | 602.00 | −0.04 |
| Mon Sep 28 | 602.05 | +0.06 |
Daily mean of all readings that day; today is the average so far.
About this data
- Source
- NOAA CO-OPS (Tides & Currents)
- Location
- 47.7486, -90.3413 · Minnesota
- Measures
- Reservoir water-surface elevation, feet above sea level (IGLD 1985)
- Latest reading
- Oct 26, 11:42 AM local time
- History
- 369 days on file since 2025-09-26
- Page built
- Oct 26, 2026 12:50 PM ET
Source: NOAA CO-OPS (Tides & Currents) (official page). Operator data is preliminary and may be revised. Great Lakes levels are measured against the International Great Lakes Datum (IGLD 1985); NOAA CO-OPS publishes 6-minute water levels and verified daily means. Weather: NOAA National Weather Service.