Phelps Creek below Unnamed Tributary near Index, WA

USGS Site No: 12147680 • Phelps Creek • King County, WA

Phelps Creek below Unnamed Tributary near Index, WA on the Phelps Creek is currently at 6 cfs (Low — 19th percentile for this date) . Gage height: 6.03 ft.

Reading from

6
CFS Discharge
6.03
Gage Height (ft)
Low
Flow Condition
N/A
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 0
25th Low threshold 9 Today: 6 cfs
50th (Median) Normal (median) 15
75th High threshold 38
95th Very High threshold 0

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.

47 23 0 cfs Apr 7 May 29
10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date Discharge (CFS) Gage Ht (ft)
May 29, 2026 5 6.00
May 28, 2026 5 5.99
May 27, 2026 5 5.99
May 26, 2026 5 6.02
May 25, 2026 6 6.05
May 24, 2026 7 6.08
May 23, 2026 8 6.10
May 22, 2026 9 6.13
May 21, 2026 10 6.15
May 20, 2026 11 6.18
May 19, 2026 14 6.23
May 18, 2026 18 6.29
May 17, 2026 26 6.39
May 16, 2026 43 6.52
May 15, 2026 36 6.48
Apr 21, 2026 35 6.47
Apr 20, 2026 32 6.45
Apr 19, 2026 24 6.38
Apr 18, 2026 18 6.30
Apr 17, 2026 17 6.28
Apr 16, 2026 21 6.33
Apr 15, 2026 43 6.52
Apr 14, 2026 31 6.43
Apr 13, 2026 25 6.38
Apr 12, 2026 11 6.17
Apr 11, 2026 11 6.18
Apr 10, 2026 9 6.12
Apr 9, 2026 10 6.14
Apr 8, 2026 13 6.22
Apr 7, 2026 24 6.37

Station Information

USGS Site No
12147680
State
WA
County
King County
Coordinates
47.7042, -121.6008
Datum (ft)
1,846.1
HUC Code
17110010
View on USGS NWIS →

Recent Extremes

Max discharge
538 cfs
Dec 10, 2025
Min discharge
1 cfs
Sep 20, 2025

Computed from the local daily-values archive.

Nearby Gauges

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