How high is the South Fork Grand River Near Cash,sd right now?

The South Fork Grand River Near Cash,sd is currently flowing at 9 cubic feet per second with a gage height of 0.70 feet, based on the most recent USGS instantaneous reading.

Is the flow on the South Fork Grand River Near Cash,sd normal for this time of year?

Current flow is classified as very low for June 11. Today's discharge is at the 8th percentile compared to the long-term historical record at this gauge.

Is the South Fork Grand River Near Cash,sd at flood stage?

No — the gage height is 11.30 feet below the NWS flood-stage threshold of 12.0 feet.

What is the historical median flow for the South Fork Grand River Near Cash,sd on June 11?

The long-term median discharge for this date is 31 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 11 to 295 cfs.

Where is the South Fork Grand River Near Cash,sd stream gauge located?

The South Fork Grand River Near Cash,sd stream gauge is operated by the USGS in Perkins County, SD on the South Fork Grand River. USGS site number 06356500 (coordinates 45.6487, -102.6433).

South Fork Grand River Near Cash,sd

USGS Site No: 06356500 • South Fork Grand River • Perkins County, SD

South Fork Grand River Near Cash,sd on the South Fork Grand River is currently at 9 cfs (Very Low — 8th percentile for this date) . Gage height: 0.70 ft.

Reading from 1 week ago

CFS Discharge

0.70

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	11	Today: 9 cfs
25th	Low threshold	16
50th (Median)	Normal (median)	31
75th	High threshold	81
95th	Very High threshold	295

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	11	0.77
May 27, 2026	12	0.80
May 26, 2026	14	0.85
May 25, 2026	17	0.92
May 24, 2026	17	0.92
May 23, 2026	16	0.90
May 22, 2026	13	0.83
May 21, 2026	10	0.73
May 20, 2026	10	0.74
May 19, 2026	10	0.75
May 18, 2026	9	0.72
May 17, 2026	9	0.70
May 16, 2026	8	0.68
May 15, 2026	9	0.70
Apr 20, 2026	24	1.06
Apr 19, 2026	23	1.04
Apr 18, 2026	23	1.05
Apr 17, 2026	34	1.23
Apr 16, 2026	33	1.21
Apr 15, 2026	16	0.90
Apr 14, 2026	16	0.90
Apr 13, 2026	17	0.93
Apr 12, 2026	19	0.97
Apr 11, 2026	23	1.05
Apr 10, 2026	34	1.24
Apr 9, 2026	47	1.42
Apr 8, 2026	71	1.68
Apr 7, 2026	91	1.87
Apr 6, 2026	36	1.25
Apr 5, 2026	24	1.07

Station Information

USGS Site No: 06356500
State: SD
County: Perkins County
Coordinates: 45.6487, -102.6433
Drainage Area: 1,306 mi²
Datum (ft): 2,424.2
HUC Code: 10130302

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 10.0 ft
Flood Stage: 12.0 ft
Moderate Flood: 14.0 ft
Major Flood: 16.0 ft

Currently 11.30 ft below flood stage.

Recent Extremes

Max discharge: 1,420 cfs

Apr 29, 2025
Min discharge: 8 cfs

May 16, 2026
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

North Fork Grand River Near White Butte,sd
17.2 mi · 3 cfs

Low
Cedar Creek near Haynes, ND
35.9 mi · 3 cfs

Low
North Fork Grand River Above Bowman-Haley Lake, ND
38.2 mi · 0 cfs

Unknown
Moreau River Near Faith,sd
39.1 mi · 11 cfs

Low
Spring Creek Near Haley, ND
40.3 mi · 0 cfs

Very High