Boulder Creek at Mouth Near Longmont, CO

USGS Site No: 06730500 • Boulder Creek • Weld County, CO

Boulder Creek at Mouth Near Longmont, CO on the Boulder Creek is currently at 62 cfs (Normal — 33th percentile for this date) . Gage height: 9.88 ft.

Reading from

↑ Upstream on Boulder Creek
Boulder Creek at North 75th St. Near Boulder, CO
62
CFS Discharge
9.88
Gage Height (ft)
Normal
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 3
25th Low threshold 27
50th (Median) Normal (median) 138 Today: 62 cfs
75th High threshold 361
95th Very High threshold 810

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.

1k 513 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 77 —
May 27, 2026 54 —
May 26, 2026 35 —
May 25, 2026 53 —
May 24, 2026 73 —
May 23, 2026 63 —
May 22, 2026 76 —
May 21, 2026 64 —
May 20, 2026 76 —
May 19, 2026 144 —
May 18, 2026 81 —
May 17, 2026 16 —
May 16, 2026 10 —
May 15, 2026 3 —
Apr 20, 2026 13 —
Apr 19, 2026 15 —
Apr 18, 2026 17 —
Apr 17, 2026 3 —
Apr 16, 2026 5 —
Apr 15, 2026 14 —
Apr 14, 2026 3 —
Apr 13, 2026 6 —
Apr 12, 2026 5 —
Apr 11, 2026 3 —
Apr 10, 2026 6 —
Apr 9, 2026 9 —
Apr 8, 2026 6 —
Apr 7, 2026 5 —
Apr 6, 2026 5 —
Apr 5, 2026 6 —

Station Information

USGS Site No
06730500
State
CO
County
Weld County
Coordinates
40.1388, -105.0202
Drainage Area
447 mi²
Datum (ft)
4,860.0
HUC Code
10190005
View on USGS NWIS →

Recent Extremes

Max discharge
552 cfs
Jun 14, 2025
Min discharge
0 cfs
Aug 5, 2025

Computed from the local daily-values archive.

Nearby Gauges

Related