Boulder Creek at North 75th St. Near Boulder, CO
USGS Site No: 06730200 • Boulder Creek • Boulder County, CO
Boulder Creek at North 75th St. Near Boulder, CO on the Boulder Creek is currently at 171 cfs (Normal — 35th percentile for this date) . Gage height: 5.43 ft.
Reading from
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 | 91 | |
| 25th | Low threshold | 133 | |
| 50th (Median) | Normal (median) | 233 | Today: 171 cfs |
| 75th | High threshold | 434 | |
| 95th | Very High threshold | 1,110 |
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.
30-Day Flow History
| Date | Discharge (CFS) | Gage Ht (ft) |
|---|---|---|
| May 28, 2026 | 124 | — |
| May 27, 2026 | 102 | — |
| May 26, 2026 | 78 | — |
| May 25, 2026 | 79 | — |
| May 24, 2026 | 98 | — |
| May 23, 2026 | 99 | — |
| May 22, 2026 | 99 | — |
| May 21, 2026 | 94 | — |
| May 20, 2026 | 79 | — |
| May 19, 2026 | 93 | — |
| May 18, 2026 | 125 | — |
| May 17, 2026 | 84 | — |
| May 16, 2026 | 79 | — |
| May 15, 2026 | 67 | — |
| Apr 20, 2026 | 26 | — |
| Apr 19, 2026 | 33 | — |
| Apr 18, 2026 | 36 | — |
| Apr 17, 2026 | 34 | — |
| Apr 16, 2026 | 35 | — |
| Apr 15, 2026 | 45 | — |
| Apr 14, 2026 | 41 | — |
| Apr 13, 2026 | 36 | — |
| Apr 12, 2026 | 34 | — |
| Apr 11, 2026 | 33 | — |
| Apr 10, 2026 | 31 | — |
| Apr 9, 2026 | 33 | — |
| Apr 8, 2026 | 38 | — |
| Apr 7, 2026 | 41 | — |
| Apr 6, 2026 | 39 | — |
| Apr 5, 2026 | 38 | — |
Station Information
- USGS Site No
- 06730200
- State
- CO
- County
- Boulder County
- Coordinates
- 40.0517, -105.1783
- Drainage Area
- 307 mi²
- Datum (ft)
- 5,105.7
- HUC Code
- 101900050601
Flood Stage Thresholds
- Action Stage
- 7.5 ft
- Flood Stage
- 8.0 ft
- Moderate Flood
- 9.0 ft
- Major Flood
- 10.0 ft
Currently 2.57 ft below flood stage.
Recent Extremes
- Max discharge
-
664 cfsJun 14, 2025
- Min discharge
-
2 cfsMar 29, 2026
- Days at flood stage
- 0
Computed from the local daily-values archive.
Nearby Gauges
-
Left Hand Creek at Hover Road Near Longmont, COVery Low6.2 mi · 1 cfs
-
Fourmile Creek at Orodell, COVery Low8.2 mi · 5 cfs
-
Fourmile Canyon Creek Near Sunshine, COVery Low9.0 mi · 0 cfs
-
Fourmile Creek at Logan Mill Road Near Crisman, COLow9.9 mi · 7 cfs
-
St Vrain Creek below Boulder Creek at Highway 119 near LongmontNormal11.7 mi · 719 cfs