How high is the Big Sioux River Near Bruce, SD right now?

The Big Sioux River Near Bruce, SD is currently flowing at 205 cubic feet per second with a gage height of 3.89 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Big Sioux River Near Bruce, SD normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 34th percentile compared to the long-term historical record at this gauge.

Is the Big Sioux River Near Bruce, SD at flood stage?

No — the gage height is 4.11 feet below the NWS flood-stage threshold of 8.0 feet.

What is the historical median flow for the Big Sioux River Near Bruce, SD on June 11?

The long-term median discharge for this date is 361 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 90 to 1,480 cfs.

Where is the Big Sioux River Near Bruce, SD stream gauge located?

The Big Sioux River Near Bruce, SD stream gauge is operated by the USGS in Brookings County, SD on the Big Sioux River. USGS site number 06479770 (coordinates 44.4675, -96.8874).

Big Sioux River Near Bruce, SD

USGS Site No: 06479770 • Big Sioux River • Brookings County, SD

Big Sioux River Near Bruce, SD on the Big Sioux River is currently at 205 cfs (Normal — 34th percentile for this date) . Gage height: 3.89 ft.

Reading from 1 week ago

↑ Upstream on Big Sioux River

Big Sioux River Near Castlewood,sd

Downstream on Big Sioux River ↓

Big Sioux River Near Brookings,sd

205

CFS Discharge

3.89

Gage Height (ft)

Normal

Flow Condition

Normal

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	90
25th	Low threshold	117
50th (Median)	Normal (median)	361	Today: 205 cfs
75th	High threshold	645
95th	Very High threshold	1,480

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	210	3.92
May 27, 2026	215	3.94
May 26, 2026	229	4.00
May 25, 2026	249	4.10
May 24, 2026	254	4.12
May 23, 2026	225	3.99
May 22, 2026	205	3.89
May 21, 2026	207	3.90
May 20, 2026	213	—
May 19, 2026	220	—
May 18, 2026	243	—
May 17, 2026	249	—
May 16, 2026	247	—
May 15, 2026	248	—
Apr 20, 2026	338	4.47
Apr 19, 2026	363	4.57
Apr 18, 2026	394	4.69
Apr 17, 2026	412	4.75
Apr 16, 2026	424	4.80
Apr 15, 2026	417	4.77
Apr 14, 2026	405	4.73
Apr 13, 2026	384	4.65
Apr 12, 2026	378	4.63
Apr 11, 2026	365	4.57
Apr 10, 2026	381	4.64
Apr 9, 2026	390	4.67
Apr 8, 2026	408	4.74
Apr 7, 2026	392	4.68
Apr 6, 2026	390	4.67
Apr 5, 2026	383	4.65

Station Information

USGS Site No: 06479770
State: SD
County: Brookings County
Coordinates: 44.4675, -96.8874
Drainage Area: 2,396 mi²
Datum (ft): 1,612.0
HUC Code: 10170202

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 7.0 ft
Flood Stage: 8.0 ft
Moderate Flood: 10.0 ft
Major Flood: 13.0 ft

Currently 4.11 ft below flood stage.

Recent Extremes

Max discharge: 2,870 cfs

Jul 2, 2025
Min discharge: 70 cfs

May 14, 2025
Days at flood stage: 30

Computed from the local daily-values archive.

Nearby Gauges

Hidewood Creek Near Estelline SD
11.3 mi

Unknown
Medary Creek Near Brookings, SD
17.9 mi

Unknown
Big Sioux River Near Castlewood,sd
19.8 mi · 101 cfs

Normal
Big Sioux River Near Brookings,sd
21.0 mi · 223 cfs

Normal
Big Sioux River Below Watertown, SD
27.5 mi · 21 cfs

Low