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St. Johns River at Astor water level

Tidal gauge, St. Johns River, Florida, United States

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Right now

Above flood stage

Water level

2.85ft Up 0.28 ft over the last 24 hours

Flow
372 cfs
1 3 4 5 Highest onrecord 4.81 ft Minor floodstage 2.30 ft

History

History
234ftOct 12Oct 14Oct 17Oct 20Oct 23Minor flood stage234ftOct 12Oct 17Oct 23Minor flood stage
1234ftSep 19Sep 27Oct 6Oct 14Oct 23Minor flood stage1234ftSep 19Oct 6Oct 23Minor flood stage
-024ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage-024ftOct 2025Apr 2026Oct 2026Minor flood stage
-024ftJanMarMayJulSepNov2026-024ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Forecast Minor flood stage

The forecast expects the river to rise to 3.30 ft by Tuesday, October 20 at 08:00 AM. The forecast reaches flood stage. Follow local warnings. Issued Sunday, October 18 at 08:47 AM by NOAA National Weather Service.

What this means

The gauge at St. Johns River at Astor reads 2.85 ft, over the official flood stage of 2.30 ft.

That puts it 0.34 ft above the median of 2.51 ft for mid-October, based on 35 years of readings. A year ago it stood at 3.18 ft (−0.33 ft). The record high is 4.81 ft, set on October 12, 2024.

The water is rising: up 0.28 ft over the past 24 hours. The forecast expects the river to rise to 3.30 ft by Tuesday, October 20 at 08:00 AM. The forecast reaches flood stage. Follow local warnings. Follow National Weather Service flood warnings for the area, and never drive through flooded roads.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Median for this date
2.51 ft0.34 ft above the median for this date
Normal for this date
1.47 ft – 3.78 ft8 years in 10 fall in this range (35 years of records)
Same day last year
3.18 ft−0.33 ft
Lowest and highest in 30 days
2.05 ft – 3.12 ft
Lowest and highest in 12 months
0.39 ft – 3.12 ft
Highest on record
4.81 ftOctober 12, 2024
Forecast peak
3.30 ftTuesday, October 20 at 08:00 AM

High water at St. Johns River at Astor

The National Weather Service splits flooding into minor, moderate and major flood stage, each tied to what starts to go under water at this particular gauge. Minor flooding usually means low roads, parks and farmland; major flooding reaches homes and businesses.

Keep children and dogs well back from the edge, and stay off flooded footpaths and towpaths.

What happens at each level

4.50 ft
Major widespread and long duration flooding occurs, with water rescues and evacuations necessary. Most low-lying homes become uninhabitable due to 2 to 3 feet water depth in many areas of the community on or near the river. Water reaches Front Street south of SR-40. Areas off of Riveredge Drive are inaccessible. Water surrounds and enters homes on Riverview Drive and Claire Street. Most areas near the Astor Landing Camptround are inaccessible due to knee-deep water.
4.00 ft
Major flooding occurs with water entering many structures on canals and along the river. Long duration flooding will occur, with levels taking weeks to months to return below flood stage. Water rescues will be necessary. River Road becomes inaccessible, with 1 to 2 feet water depth in numerous homes on Wildhog, Possum, Bonnet and Snail roads. Roads along Blue Creek are inaccessible with major flooding of homes on Otter, Branch and Chestnut roads. Camp South Moon Road and Juno Trail are inaccessible.
3.50 ft
Canals have overflowed into yards. Homes on or near Wildhog, Bonnet and Snail roads become inaccessible with several inches of water inside homes along the river and canals. Docks at Astor Bridge marina and throughout Astor are completely submerged. Bartram Rd and Holiday Circle are inaccessible with yards completely submerged. Clair Street is inaccessible. Roads flooded in South Moon Fish Camp, docks and yards at condominiums on Juno Trail and water breaches the sea wall at Blair's Jungle Den.
3.00 ft
Water approaches or may enter lowest homes on or near Wildhog Road and nearby canals. Flooding reaches the parking lot of the Juno Trail Apartments. Flooding on portions of Alligator Road and Holiday Road. Lowest lying yards along Blue Creek are flooded. Roads at Astor Landing Campground and Lake Dexter Boat Ramp begin to flood. Water enters lower homes closest to the river on McPherson Lane.
2.85 ft
Right now
2.80 ft
Docks and boat ramps covered at South Moon Fish Camp and approaching sea wall at Blair's Jungle Den. Water approaching sites closest to the river at Fish Tales RV Resort and Astor Landing Campground. Portion of Clair Street covered by river water south of the Butler Boat Ramp. Docks underwater at the Astor Bridge Marina and along Riveredge Drive. Portions of Fox Road are covered with water nearest to the river. Acorn, Hazelnut and Redbud roads are underwater with yards inundated.
2.30 ft
Many docks become submerged along the river and in canals in the Astor community. Water enters yards of properties on Bartram Road, Holiday Circle and along Wild Hog Road on the Lake County side. In Volusia County, water encroaches yards of homes on the river side of Alice Drive. No wake zones are in effect from near the South Moon Canal to approximately 800 feet south of the Riverview lodge.
2.00 ft
River levels rise and fills canals, encroaching on docks, yards and boat ramps in the vicinity of SR-40. Properties in low areas along and near the river and many canals should prepare for further water encroachment.

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: > 95 %.

RankLevelDate
14.81 ftOctober 12, 2024
24.71 ftOctober 1, 2022
34.52 ftNovember 10, 2022
44.46 ftOctober 6, 2017
54.43 ftSeptember 13, 2017
64.18 ftSeptember 26, 2004
74.03 ftOctober 20, 2017
83.90 ftSeptember 17, 2001
93.82 ftSeptember 25, 2008
103.49 ftOctober 12, 2016

Weather at the gauge

No rain in the last 3 days.

18 Sun 75° 64° – Wind 15 mph
19 Mon 78° 63° 0.13 in Wind 16 mph
20 Tue 79° 59° – Wind 10 mph
21 Wed 82° 59° – Wind 9 mph
22 Thu 81° 62° – Wind 9 mph
23 Fri 81° 62° – Wind 11 mph
24 Sat 82° 67° 0.07 in, 45% Wind 14 mph

Forecast: Open-Meteo

Sunrise 07:30 AM Sunset 06:54 PM Daylight 11 hr, 24 min First quarter 53%

Map

Other gauges on the St. Johns River

Gauge Level Compared with normal 24 hours Distance
St. Johns River near MelbourneRiver gauge, St. Johns River 6.69 ft High −0.03 ft 88 mi
St. Johns River near CocoaRiver gauge, St. Johns River 15.43 ft High +0.03 ft 68 mi
St. Johns River near ChristmasRiver gauge, St. Johns River 7.96 ft Normal +0.02 ft 56 mi
St. Johns River above Lake Harney near GenevaRiver gauge, St. Johns River 6.83 ft Normal ±0 43 mi
St. Johns River near SanfordRiver gauge, St. Johns River 4.03 ft Normal −0.05 ft 26 mi
St. Johns River near De LandRiver gauge, St. Johns River 3.16 ft Normal +0.01 ft 14 mi
St. Johns River at Buffalo Bluff near SatsumaTidal gauge, St. Johns River 12.63 ft High +0.85 ft 31 mi
St. Johns River at JacksonvilleTidal gauge, St. Johns River 12.29 ft High +0.54 ft 80 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Silver Glen Springs near AstorRiver gauge, Silver Glen Springs 2.89 ft Normal +0.30 ft 9 mi
Blue Springs near Orange CityRiver gauge, Blue Springs 3.46 ft Normal −0.02 ft 19 mi
Blackwater Creek near CassiaRiver gauge, Blackwater Creek 7.29 ft High −0.03 ft 20 mi
Ocklawaha River at Moss BluffRiver gauge, Ocklawaha River 36.30 ft Normal +0.04 ft 22 mi
Ocklawaha River above Moss Bluff Dam at Moss BluffRiver gauge, Ocklawaha River 57.48 ft Low −0.12 ft 22 mi
Wekiva River near SanfordRiver gauge, Wekiva River 3.67 ft Very high −0.12 ft 25 mi
Tomoka River near Holly HillRiver gauge, Tomoka River 7.74 ft Normal −0.11 ft 25 mi
Haynes Creek at LisbonRiver gauge, Haynes Creek 62.61 ft Normal −0.10 ft 26 mi

Questions and answers

How does the St. Johns River at Astor compare with last year?

It is 0.33 ft lower than on the same day last year, when the reading was 3.18 ft.

What is flood stage for the St. Johns River at Astor?

The official flood stage is 2.30 ft. The current reading is above it.

What is the water level of St. Johns River at Astor today?

On Oct 18, 2026, 05:30 PM EDT, the water level was 2.85 ft. Up 0.28 ft over the last 24 hours.

Is St. Johns River at Astor rising or falling?

Up 0.28 ft over the last 24 hours. Down 0.27 ft over the last 7 days.

Is the level of St. Johns River at Astor normal?

Above flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at St. Johns River at Astor?

The highest level on record is 4.81 ft on October 12, 2024.

Is St. Johns River at Astor expected to rise?

The forecast expects the river to rise to 3.30 ft by Tuesday, October 20 at 08:00 AM. The forecast reaches flood stage. Follow local warnings.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:02236125 (Agency page)
Coordinates
29.16693, -81.52206 (WGS84)
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level 2.85 ft 2026-10-18 21:30 Provisional
Flow 372 cfs 2026-10-18 19:30 Provisional

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How to cite

U.S. Geological Survey: St. Johns River at Astor (usgs:02236125). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/florida/st-johns-river-at-astor

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.