Boundary Creek near Porthill ID

USGS Site No: 12321500 • Boundary Creek • Boundary County, ID

Boundary Creek near Porthill ID on the Boundary Creek is currently at 490 cfs (Very High — 100th percentile for this date) . Gage height: 11.56 ft.

Reading from

490
CFS Discharge
11.56
Gage Height (ft)
Very High
Flow Condition
N/A
Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for October 28 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 22
25th Low threshold 32
50th (Median) Normal (median) 41
75th High threshold 71
95th Very High threshold 321

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.

2.2k 1.1k 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 484 —
May 27, 2026 517 —
May 26, 2026 491 —
May 25, 2026 462 —
May 24, 2026 464 —
May 23, 2026 432 —
May 22, 2026 417 —
May 21, 2026 428 —
May 20, 2026 452 —
May 19, 2026 430 —
May 18, 2026 426 —
May 17, 2026 458 —
May 16, 2026 532 —
May 15, 2026 646 —
Apr 20, 2026 362 —
Apr 19, 2026 335 —
Apr 18, 2026 343 —
Apr 17, 2026 367 —
Apr 16, 2026 412 —
Apr 15, 2026 479 —
Apr 14, 2026 566 —
Apr 13, 2026 450 —
Apr 12, 2026 379 —
Apr 11, 2026 314 —
Apr 10, 2026 275 —
Apr 9, 2026 264 —
Apr 8, 2026 265 —
Apr 7, 2026 251 —
Apr 6, 2026 200 —
Apr 5, 2026 183 —

Station Information

USGS Site No
12321500
State
ID
County
Boundary County
Coordinates
48.9972, -116.5692
Drainage Area
97 mi²
Datum (ft)
1,768.7
HUC Code
17010104
View on USGS NWIS →

Recent Extremes

Max discharge
1,050 cfs
May 29, 2025
Min discharge
18 cfs
Oct 10, 2025

Computed from the local daily-values archive.

Nearby Gauges

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