LakeLevelIs Grand Lake St Marys low right now?
Grand Lake St Marys was at 870.76 ft on October 10, 2026. Over the past week the lake has been falling about 0.03 ft a day.
Daily levels, last two weeks
| Date | Level (ft) | Change |
|---|---|---|
| Oct 10 | 870.76 | −0.01 |
| Oct 9 | 870.77 | ±0.00 |
| Oct 8 | 870.77 | −0.02 |
| Oct 7 | 870.79 | −0.05 |
| Oct 6 | 870.84 | −0.02 |
| Oct 5 | 870.86 | −0.03 |
| Oct 4 | 870.89 | −0.05 |
| Oct 3 | 870.94 | −0.01 |
| Oct 2 | 870.95 | +0.01 |
| Oct 1 | 870.94 | −0.04 |
| Sep 30 | 870.98 | −0.03 |
| Sep 29 | 871.01 | −0.03 |
| Sep 28 | 871.04 | −0.04 |
| Sep 27 | 871.08 | −0.05 |
About Grand Lake St Marys
- Data
- U.S. Geological Survey — USGS 403204084342601
- Datum
- NAVD88
Lakes near Grand Lake St Marys
- Lake LoramieOhio · 17 mi 953.8 ft −0.1 wkLatest reading
- Indian LakeOhio · 37 mi 995.5 ft −0.1 wkLatest reading
- JERoush-LakeOhio / Indiana · 52 mi 752.9 ft −19.0 wk3.9 ft above full pool
- C. J. Brown ReservoirOhio · 60 mi 1,011.1 ft −0.2 wk0.9 ft below full pool
- CJBrown-LakeOhio · 60 mi 1,011.2 ft −0.3 wkHigher than usual for this time of year
- Salamonie-LakeIndiana · 61 mi 759.1 ft −6.5 wk4.1 ft above full pool
Questions
Is Grand Lake St Marys low right now?
Grand Lake St Marys was at 870.76 ft on October 10, 2026. Over the past week the lake has been falling about 0.03 ft a day.
How often is the Grand Lake St Marys level updated?
The operator reports every 15 minutes to an hour. This page refreshes several times a day; the time of the latest reading is shown next to the level.
Where does this data come from?
U.S. Geological Survey (USGS 403204084342601). Readings are provisional and can be revised.