How high is the Nassau River Near Tisonia, FL right now?

The Nassau River Near Tisonia, FL is currently flowing at -17,700 cubic feet per second with a gage height of 13.35 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Nassau River Near Tisonia, FL normal for this time of year?

Current flow is classified as very low for June 11. Today's discharge is at the 120th percentile compared to the long-term historical record at this gauge.

Is the Nassau River Near Tisonia, FL at flood stage?

Yes — the gage height is currently 12.05 feet above the NWS flood-stage threshold of 1.3 feet.

What is the historical median flow for the Nassau River Near Tisonia, FL on June 11?

The long-term median discharge for this date is -225 cfs based on USGS daily statistics. The 10th–95th percentile range historically is -1,480 to unavailable cfs.

Where is the Nassau River Near Tisonia, FL stream gauge located?

The Nassau River Near Tisonia, FL stream gauge is operated by the USGS in Duval County, FL on the Nassau River. USGS site number 02231291 (coordinates 30.5508, -81.5898).

Nassau River Near Tisonia, FL

USGS Site No: 02231291 • Nassau River • Duval County, FL

Nassau River Near Tisonia, FL on the Nassau River is currently at -17,700 cfs (Very Low — 120th percentile for this date) . Gage height: 13.35 ft. This station is at or above flood stage.

Reading from 1 week ago

-17,700

CFS Discharge

13.35

Gage Height (ft)

Very Low

Flow Condition

FLOOD

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	-1,480	Today: -17,700 cfs
25th	Low threshold	-838
50th (Median)	Normal (median)	-225
75th	High threshold	411
95th	Very High threshold	0

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	237	11.26
May 27, 2026	104	11.39
May 26, 2026	22	11.60
May 25, 2026	-18	11.73
May 24, 2026	497	11.83
May 23, 2026	1,110	11.78
May 22, 2026	1,320	11.75
May 21, 2026	1,730	11.85
May 20, 2026	1,730	12.03
May 19, 2026	1,670	12.06
May 18, 2026	1,490	12.02
May 17, 2026	1,240	12.04
May 16, 2026	1,260	12.16
May 15, 2026	-838	12.38
Apr 21, 2026	1,680	11.99
Apr 20, 2026	246	12.42
Apr 19, 2026	995	11.69
Apr 18, 2026	237	11.60
Apr 17, 2026	-15	11.28
Apr 16, 2026	-162	11.30
Apr 15, 2026	-227	11.38
Apr 14, 2026	-373	11.39
Apr 13, 2026	205	11.37
Apr 12, 2026	810	11.40
Apr 11, 2026	2,330	11.74
Apr 10, 2026	2,630	12.53
Apr 9, 2026	1,580	13.10
Apr 8, 2026	-1,480	13.38
Apr 7, 2026	163	12.62
Apr 6, 2026	-19	11.48

Station Information

USGS Site No: 02231291
State: FL
County: Duval County
Coordinates: 30.5508, -81.5898
Drainage Area: 285 mi²
HUC Code: 03070205

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 0.8 ft
Flood Stage: 1.3 ft
Moderate Flood: 2.3 ft
Major Flood: 3.3 ft

Currently 12.05 ft above flood stage.

Recent Extremes

Max discharge: 3,350 cfs

Oct 12, 2025
Min discharge: -3,590 cfs

Mar 28, 2026
Days at flood stage: 377

Computed from the local daily-values archive.

Nearby Gauges

Dunn Creek at Dunn Creek Road near Eastport, FL
6.6 mi · -478 cfs

Low
Clapboard Creek near Jacksonville, FL
8.3 mi · -524 cfs

Very Low
Broward River below Biscayne Blvd near Jacksonville, FL
8.8 mi · 550 cfs

Very High
Trout River near Jacksonville Fla
11.2 mi · -3,990 cfs

Very Low
St Mary'South River at I-95, Near Kingsland, GA
13.9 mi · -20,300 cfs

Unknown