Castle Creek Above Deerfield Reservoir Near Hill City,sd

USGS Site No: 06409000 • Castle Creek • Pennington County, SD

Castle Creek Above Deerfield Reservoir Near Hill City,sd on the Castle Creek is currently at 12 cfs (Normal — 35th percentile for this date) . Gage height: 2.69 ft.

Reading from

Downstream on Castle Creek ↓
Castle Creek Below Deerfield Dam SD
12
CFS Discharge
2.69
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 9
25th Low threshold 10
50th (Median) Normal (median) 14 Today: 12 cfs
75th High threshold 20
95th Very High threshold 39

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.

53 26 0 cfs Apr 5 May 28
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 28, 2026 12 2.69
May 27, 2026 12 2.69
May 26, 2026 12 2.69
May 25, 2026 12 2.69
May 24, 2026 12 2.70
May 23, 2026 12 2.71
May 22, 2026 14 2.75
May 21, 2026 12 2.69
May 20, 2026 12 2.69
May 19, 2026 12 2.69
May 18, 2026 12 2.70
May 17, 2026 12 2.70
May 16, 2026 11 2.67
May 15, 2026 11 2.67
Apr 20, 2026 11 2.68
Apr 19, 2026 11 2.69
Apr 18, 2026 11 2.67
Apr 17, 2026 11 2.68
Apr 16, 2026 11 2.67
Apr 15, 2026 11 2.67
Apr 14, 2026 11 2.67
Apr 13, 2026 11 2.67
Apr 12, 2026 11 2.68
Apr 11, 2026 11 2.68
Apr 10, 2026 11 2.68
Apr 9, 2026 11 2.68
Apr 8, 2026 11 2.68
Apr 7, 2026 12 2.69
Apr 6, 2026 11 2.69
Apr 5, 2026 12 2.69

Station Information

USGS Site No
06409000
State
SD
County
Pennington County
Coordinates
44.0136, -103.8305
Drainage Area
79 mi²
Datum (ft)
5,912.3
HUC Code
10120110
View on USGS NWIS →

Flood Stage Thresholds

Action Stage
4.5 ft
Flood Stage
6.0 ft
Moderate Flood
7.0 ft
Major Flood
7.5 ft

Currently 3.31 ft below flood stage.

Recent Extremes

Max discharge
25 cfs
Oct 16, 2025
Min discharge
10 cfs
Sep 10, 2025
Days at flood stage
0

Computed from the local daily-values archive.

Nearby Gauges

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