How high is the Belle Fourche River at WY-SD State Line right now?

The Belle Fourche River at WY-SD State Line is currently flowing at 7 cubic feet per second with a gage height of 3.27 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Belle Fourche River at WY-SD State Line normal for this time of year?

Current flow is classified as very low for June 11. Today's discharge is at the 4th percentile compared to the long-term historical record at this gauge.

Is the Belle Fourche River at WY-SD State Line at flood stage?

No — the gage height is 11.73 feet below the NWS flood-stage threshold of 15.0 feet.

What is the historical median flow for the Belle Fourche River at WY-SD State Line on June 11?

The long-term median discharge for this date is 97 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 17 to 1,070 cfs.

Where is the Belle Fourche River at WY-SD State Line stream gauge located?

The Belle Fourche River at WY-SD State Line stream gauge is operated by the USGS in Butte County, SD on the Belle Fourche River. USGS site number 06428500 (coordinates 44.7488, -104.0517).

Belle Fourche River at WY-SD State Line

USGS Site No: 06428500 • Belle Fourche River • Butte County, SD

Belle Fourche River at WY-SD State Line on the Belle Fourche River is currently at 7 cfs (Very Low — 4th percentile for this date) . Gage height: 3.27 ft.

Reading from 1 week ago

Downstream on Belle Fourche River ↓

Belle Fourche River Near Fruitdale,sd

CFS Discharge

3.27

Gage Height (ft)

Very Low

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	17	Today: 7 cfs
25th	Low threshold	38
50th (Median)	Normal (median)	97
75th	High threshold	193
95th	Very High threshold	1,070

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	10	3.34
May 27, 2026	9	3.32
May 26, 2026	6	3.24
May 25, 2026	6	3.24
May 24, 2026	7	3.26
May 23, 2026	5	3.22
May 22, 2026	6	3.24
May 21, 2026	6	3.25
May 20, 2026	6	3.25
May 19, 2026	7	3.26
May 18, 2026	7	3.27
May 17, 2026	6	3.23
May 16, 2026	6	3.24
May 15, 2026	8	3.30
Apr 20, 2026	23	3.56
Apr 19, 2026	22	3.56
Apr 18, 2026	22	3.54
Apr 17, 2026	20	3.51
Apr 16, 2026	18	3.49
Apr 15, 2026	20	3.52
Apr 14, 2026	20	3.52
Apr 13, 2026	20	3.52
Apr 12, 2026	21	3.54
Apr 11, 2026	23	3.56
Apr 10, 2026	23	3.57
Apr 9, 2026	24	3.58
Apr 8, 2026	25	3.60
Apr 7, 2026	27	3.62
Apr 6, 2026	27	3.63
Apr 5, 2026	30	3.67

Station Information

USGS Site No: 06428500
State: SD
County: Butte County
Coordinates: 44.7488, -104.0517
Drainage Area: 3,233 mi²
Datum (ft): 3,096.5
HUC Code: 10120202

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 13.0 ft
Flood Stage: 15.0 ft
Moderate Flood: 16.0 ft
Major Flood: 18.0 ft

Currently 11.73 ft below flood stage.

Recent Extremes

Max discharge: 227 cfs

Oct 17, 2025
Min discharge: 1 cfs

Sep 11, 2025
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Redwater River Above Belle Fourche,sd
11.9 mi · 10 cfs

Very Low
Murray Ditch above Headgate at WY-SD State Line
11.9 mi · 11 cfs

High
Redwater Creek at WY-SD State Line
12.2 mi · 16 cfs

Low
Belle Fourche River Near Fruitdale,sd
15.9 mi · 2 cfs

Very Low
Inlet Canal Above Belle Fourche Reservoir,sd
16.0 mi · 4 cfs

Low