Meramec River near Sullivan
Observed Wed, Sep 23, 7:29 AM CDT
- Flood stage
- 11.00 ft
- Record crest
- 36.52 ft2017
Flood stages and impacts
| Category | Stage |
|---|---|
| Major flood | 29.00 ft |
| Moderate flood | 20.00 ft |
| Minor flood | 11.00 ft |
| Action | 9.00 ft |
- 34.00 ftNear the entrance to Meramec State Park off Highway 185 west of the Meramec River bridge, this park access road near the visitor's center will begin flooding near this height.
- 29.00 ftThe main office at the Arapaho Campground begins flooding.
- 28.00 ftSpringer Road off of Sappington Bridge Road begins flooding near this height.
- 27.00 ftNear this height, rooms at the Do Drift Inn at Ozark Outdoors Resort will begin flooding.
- 25.00 ftSappington Bridge boat access parking area and restroom begins flooding near this height.
- 22.00 ftNear this height, Missouri Route W will be closed in both directions beyond Route JJ.
- 21.00 ftSappington Bridge Road just north of the Meramec River bridge begins flooding near this height.
- 18.50 ftNear this height, Missouri Route N will be closed in both directions.
- 17.30 ftThe Onondaga Cave State Park picnic shelter begins flooding near this height.
- 17.00 ftAt this height the entire Arapaho campground will be under water.
- 15.60 ftThe basic loop of the Onondaga Cave State Park campground begins flooding near this height.
- 14.50 ftAt this height the Arapaho Campground will evacuate campers. This campground is about 8.5 river miles downstream from the gage. About 14.3 miles upstream of the gage...Cave Road access to Ozark Outdoors begins flooding near this height.
- 14.00 ftThe main entrance road to the Meramec State Park campground begins flooding...blocking acess to cabins 1-8...the picnic and playground areas, and the Wilderness Trailhead parking lot. At Onondaga Cave State Park...the primary entrance to the campground is closed and the secondary entrance is used near this height.
- 13.50 ftCave Road begins flooding at Onondaga Cave State Park near this height.
- 12.00 ftThe main entrance gate at Onondaga Cave State Park begins flooding near this height. This may eventually force the park to use the rear entrance as the primary entrance to the park.
- 11.50 ftA small bridge in the back of Meramec State Park park is flooded, cutting the park in two. If the river continues to rise...park officials will evacuate the campgrounds at this point.
- 11.00 ftRight Bank begins to overflow flooding wooded areas.
- 6.00 ftWhen the river is rising above this height, canoe outfitters will generally not rent out canoes or rafts.
Flood outlook
Chance of flooding, September to November
| Category | Chance |
|---|---|
| Minor flooding | 30% |
| Moderate flooding | 9% |
| Major flooding | Under 5% |
The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.
Crest history
134 crests on NOAA’s list since 1915.
| # | Date | Stage |
|---|---|---|
| 1 | May 1, 2017 | 36.52 ft |
| 2 | August 1, 1915 | 33.50 ft |
| 3 | December 4, 1982 | 32.22 ft |
| 4 | June 9, 1945 | 32.00 ft |
| 5 | March 20, 2008 | 31.69 ft |
| 6 | December 29, 2015 | 31.48 ft |
| 7 | November 6, 2024 | 30.71 ft |
| 8 | April 12, 1994 | 29.23 ft |
| 9 | November 19, 1985 | 27.95 ft |
| 10 | June 19, 1985 | 27.50 ft |
| 11 | July 27, 1998 | 27.42 ft |
| 12 | January 30, 1969 | 27.02 ft |
| 13 | May 1, 1983 | 26.96 ft |
| 14 | November 15, 1993 | 26.50 ft |
| 15 | February 10, 1966 | 25.66 ft |
| 16 | January 4, 1950 | 25.50 ft |
| 17 | April 12, 1979 | 25.41 ft |
| 18 | April 26, 1947 | 24.80 ft |
| 19 | February 24, 1985 | 23.70 ft |
| 20 | July 11, 2026 | 23.55 ft |
| 21 | June 2, 1927 | 22.89 ft |
| 22 | June 30, 1957 | 22.61 ft |
| 23 | May 9, 1961 | 22.43 ft |
| 24 | September 26, 1993 | 22.14 ft |
| 25 | May 14, 1933 | 22.00 ft |
Most recent crests
- July 11, 2026: 23.55 ft
- March 8, 2026: 18.21 ft
- March 6, 2026: 19.65 ft
- July 1, 2025: 19.80 ft
- June 7, 2025: 11.70 ft
- June 5, 2025: 12.07 ft
- May 21, 2025: 12.80 ft
- April 20, 2025: 14.93 ft
- April 6, 2025: 21.51 ft
- November 6, 2024: 30.71 ft
Nearby
Upstream, downstream and the gauges around this one.
What this means
Forecasts by the North Central River Forecast Center. Forecasts are issued as needed during times of high water, but are not routinely available. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.
Sources
Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.