How high is the Castle Creek Below Deerfield Dam SD right now?

The Castle Creek Below Deerfield Dam SD is currently flowing at 9 cubic feet per second with a gage height of 3.52 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Castle Creek Below Deerfield Dam SD normal for this time of year?

Current flow is classified as low for June 11. Today's discharge is at the 18th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the Castle Creek Below Deerfield Dam SD on June 11?

The long-term median discharge for this date is 16 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 6 to 54 cfs.

Where is the Castle Creek Below Deerfield Dam SD stream gauge located?

The Castle Creek Below Deerfield Dam SD stream gauge is operated by the USGS in Pennington County, SD on the Castle Creek. USGS site number 06410000 (coordinates 44.0291, -103.7819).

Castle Creek Below Deerfield Dam SD

USGS Site No: 06410000 • Castle Creek • Pennington County, SD

Castle Creek Below Deerfield Dam SD on the Castle Creek is currently at 9 cfs (Low — 18th percentile for this date) . Gage height: 3.52 ft. This station is at or above flood stage.

Reading from 1 week ago

↑ Upstream on Castle Creek

Castle Creek Above Deerfield Reservoir Near Hill City,sd

CFS Discharge

3.52

Gage Height (ft)

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	6
25th	Low threshold	12	Today: 9 cfs
50th (Median)	Normal (median)	16
75th	High threshold	25
95th	Very High threshold	54

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	3.53
May 27, 2026	10	3.53
May 26, 2026	10	3.53
May 25, 2026	10	3.53
May 24, 2026	10	3.53
May 23, 2026	10	3.53
May 22, 2026	10	3.54
May 21, 2026	10	3.53
May 20, 2026	10	3.54
May 19, 2026	10	3.54
May 18, 2026	10	3.55
May 17, 2026	10	3.55
May 16, 2026	10	3.54
May 15, 2026	10	3.55
Apr 20, 2026	10	3.57
Apr 19, 2026	10	3.57
Apr 18, 2026	10	3.57
Apr 17, 2026	10	3.57
Apr 16, 2026	10	3.57
Apr 15, 2026	10	3.56
Apr 14, 2026	10	3.55
Apr 13, 2026	10	3.56
Apr 12, 2026	10	3.56
Apr 11, 2026	10	3.56
Apr 10, 2026	10	3.56
Apr 9, 2026	10	3.57
Apr 8, 2026	10	3.57
Apr 7, 2026	10	3.57
Apr 6, 2026	10	3.56
Apr 5, 2026	10	3.56

Station Information

USGS Site No: 06410000
State: SD
County: Pennington County
Coordinates: 44.0291, -103.7819
Drainage Area: 92 mi²
Datum (ft): 5,785.8
HUC Code: 10120110

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 5,908.0 ft

Recent Extremes

Max discharge: 20 cfs

Apr 26, 2025
Min discharge: 8 cfs

Jul 28, 2025

Computed from the local daily-values archive.

Nearby Gauges

Castle Creek Above Deerfield Reservoir Near Hill City,sd
2.6 mi · 12 cfs

Normal
Rhoads Fork Near Rochford,sd
8.2 mi · 4 cfs

Low
Rapid Creek Above Pactola Reservoir at Silver City, SD
10.7 mi · 23 cfs

Very Low
Rapid Creek Below Pactola Dam,sd
15.2 mi · 49 cfs

Normal
Boxelder Creek Near Nemo,sd
18.1 mi · 9 cfs

Low