BOULDER CREEK AT MOUTH NEAR LONGMONT, CO
USGS 06730500 · Colorado · reports discharge (live), gauge height
USGS 06730500 · Colorado · reports discharge (live), gauge height
What the agencies suggest
Anglers should use a handheld thermometer to test water conditionsColorado Parks and Wildlife
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 9:00 PM MST · provisional USGS data
Below normal for Nov 5 Falling · 24 h
Discharge, last 7 days: 169 readings from Oct 29, 10:00 PM MDT to Nov 5, 9:00 PM MST; ranging 0.52 to 41.4 ft³/s; latest 14.2 ft³/s; shaded band: typical range (25th–75th percentile) for each date.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Gauge height (ft) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|
| Nov 5, 9:00 PM MST | 14.2 | 9.36 | 16–72 |
| Nov 5, 8:00 PM MST | 14.2 | 9.36 | 16–72 |
| Nov 5, 7:00 PM MST | 14.8 | 9.37 | 16–72 |
| Nov 5, 6:00 PM MST | 15.5 | 9.38 | 16–72 |
| Nov 5, 5:00 PM MST | 16.1 | 9.39 | 16–72 |
| Nov 5, 4:00 PM MST | 16.8 | 9.4 | 16–72 |
| Nov 5, 3:00 PM MST | 16.8 | 9.4 | 16–72 |
| Nov 5, 2:00 PM MST | 17.5 | 9.41 | 16–72 |
| Nov 5, 1:00 PM MST | 17.5 | 9.41 | 16–72 |
| Nov 5, 12:00 PM MST | 16.8 | 9.4 | 16–72 |
| Nov 5, 11:00 AM MST | 15.5 | 9.38 | 16–72 |
| Nov 5, 10:00 AM MST | 15.5 | 9.38 | 16–72 |
| Nov 5, 9:00 AM MST | 15.5 | 9.38 | 16–72 |
| Nov 5, 8:00 AM MST | 14.8 | 9.37 | 16–72 |
| Nov 5, 7:00 AM MST | 16.1 | 9.39 | 16–72 |
| Nov 5, 6:00 AM MST | 16.8 | 9.4 | 16–72 |
| Nov 5, 5:00 AM MST | 18.2 | 9.42 | 16–72 |
| Nov 5, 4:00 AM MST | 19.7 | 9.44 | 16–72 |
| Nov 5, 3:00 AM MST | 21.2 | 9.46 | 16–72 |
| Nov 5, 2:00 AM MST | 22.9 | 9.48 | 16–72 |
| Nov 5, 1:00 AM MST | 24.6 | 9.5 | 16–72 |
| Nov 5, 12:00 AM MST | 24.6 | 9.5 | 16–72 |
| Nov 4, 11:00 PM MST | 24.6 | 9.5 | 18–71 |
| Nov 4, 10:00 PM MST | 22.9 | 9.48 | 18–71 |
| Nov 4, 9:00 PM MST | 18.2 | 9.42 | 18–71 |
| Nov 4, 8:00 PM MST | 16.1 | 9.39 | 18–71 |
| Nov 4, 7:00 PM MST | 16.1 | 9.39 | 18–71 |
| Nov 4, 6:00 PM MST | 17.5 | 9.41 | 18–71 |
| Nov 4, 5:00 PM MST | 18.2 | 9.42 | 18–71 |
| Nov 4, 4:00 PM MST | 19.7 | 9.44 | 18–71 |
| Nov 4, 3:00 PM MST | 20.4 | 9.45 | 18–71 |
| Nov 4, 2:00 PM MST | 22 | 9.47 | 18–71 |
| Nov 4, 1:00 PM MST | 22.9 | 9.48 | 18–71 |
| Nov 4, 12:00 PM MST | 23.7 | 9.49 | 18–71 |
| Nov 4, 11:00 AM MST | 24.6 | 9.5 | 18–71 |
| Nov 4, 10:00 AM MST | 24.6 | 9.5 | 18–71 |
| Nov 4, 9:00 AM MST | 24.6 | 9.5 | 18–71 |
| Nov 4, 8:00 AM MST | 25.5 | 9.51 | 18–71 |
| Nov 4, 7:00 AM MST | 24.6 | 9.5 | 18–71 |
| Nov 4, 6:00 AM MST | 24.6 | 9.5 | 18–71 |
| Nov 4, 5:00 AM MST | 25.5 | 9.51 | 18–71 |
| Nov 4, 4:00 AM MST | 26.4 | 9.52 | 18–71 |
| Nov 4, 3:00 AM MST | 27.3 | 9.53 | 18–71 |
| Nov 4, 2:00 AM MST | 29.3 | 9.55 | 18–71 |
| Nov 4, 1:00 AM MST | 30.3 | 9.56 | 18–71 |
| Nov 4, 12:00 AM MST | 32.4 | 9.58 | 18–71 |
| Nov 3, 11:00 PM MST | 32.4 | 9.58 | 17–65 |
| Nov 3, 10:00 PM MST | 32.4 | 9.58 | 17–65 |
| Nov 3, 9:00 PM MST | 31.3 | 9.57 | 17–65 |
| Nov 3, 8:00 PM MST | 27.3 | 9.53 | 17–65 |
| Nov 3, 7:00 PM MST | 20.4 | 9.45 | 17–65 |
| Nov 3, 6:00 PM MST | 18.9 | 9.43 | 17–65 |
| Nov 3, 5:00 PM MST | 21.2 | 9.46 | 17–65 |
| Nov 3, 4:00 PM MST | 25.5 | 9.51 | 17–65 |
| Nov 3, 3:00 PM MST | 31.3 | 9.57 | 17–65 |
| Nov 3, 2:00 PM MST | 31.3 | 9.57 | 17–65 |
| Nov 3, 1:00 PM MST | 41.4 | 9.67 | 17–65 |
| Nov 3, 12:00 PM MST | 41.4 | 9.67 | 17–65 |
| Nov 3, 11:00 AM MST | 39.3 | 9.65 | 17–65 |
| Nov 3, 10:00 AM MST | 39.3 | 9.65 | 17–65 |
| Nov 3, 9:00 AM MST | 37.3 | 9.63 | 17–65 |
| Nov 3, 8:00 AM MST | 36.3 | 9.62 | 17–65 |
| Nov 3, 7:00 AM MST | 37.3 | 9.63 | 17–65 |
| Nov 3, 6:00 AM MST | 37.3 | 9.63 | 17–65 |
| Nov 3, 5:00 AM MST | 37.3 | 9.63 | 17–65 |
| Nov 3, 4:00 AM MST | 36.3 | 9.62 | 17–65 |
| Nov 3, 3:00 AM MST | 37.3 | 9.63 | 17–65 |
| Nov 3, 2:00 AM MST | 35.3 | 9.61 | 17–65 |
| Nov 3, 1:00 AM MST | 38.3 | 9.64 | 17–65 |
| Nov 3, 12:00 AM MST | 36.3 | 9.62 | 17–65 |
| Nov 2, 11:00 PM MST | 39.3 | 9.65 | 17–67 |
| Nov 2, 10:00 PM MST | 40.3 | 9.66 | 17–67 |
| Nov 2, 9:00 PM MST | 38.3 | 9.64 | 17–67 |
| Nov 2, 8:00 PM MST | 34.4 | 9.6 | 17–67 |
| Nov 2, 7:00 PM MST | 28.3 | 9.54 | 17–67 |
| Nov 2, 6:00 PM MST | 25.5 | 9.51 | 17–67 |
| Nov 2, 5:00 PM MST | 28.3 | 9.54 | 17–67 |
| Nov 2, 4:00 PM MST | 35.3 | 9.61 | 17–67 |
| Nov 2, 3:00 PM MST | 39.3 | 9.65 | 17–67 |
| Nov 2, 2:00 PM MST | 32.4 | 9.58 | 17–67 |
| Nov 2, 1:00 PM MST | 29.3 | 9.55 | 17–67 |
| Nov 2, 12:00 PM MST | 30.3 | 9.56 | 17–67 |
| Nov 2, 11:00 AM MST | 29.3 | 9.55 | 17–67 |
| Nov 2, 10:00 AM MST | 32.4 | 9.58 | 17–67 |
| Nov 2, 9:00 AM MST | 33.4 | 9.59 | 17–67 |
| Nov 2, 8:00 AM MST | 26.4 | 9.52 | 17–67 |
| Nov 2, 7:00 AM MST | 26.4 | 9.52 | 17–67 |
| Nov 2, 6:00 AM MST | 28.3 | 9.54 | 17–67 |
| Nov 2, 5:00 AM MST | 28.3 | 9.54 | 17–67 |
| Nov 2, 4:00 AM MST | 30.3 | 9.56 | 17–67 |
| Nov 2, 3:00 AM MST | 32.4 | 9.58 | 17–67 |
| Nov 2, 2:00 AM MST | 34.4 | 9.6 | 17–67 |
| Nov 2, 1:00 AM MST | 35.3 | 9.61 | 17–67 |
| Nov 2, 12:00 AM MST | 35.3 | 9.61 | 17–67 |
| Nov 1, 11:00 PM MST | 35.3 | 9.61 | 19–62 |
| Nov 1, 10:00 PM MST | 33.4 | 9.59 | 19–62 |
| Nov 1, 9:00 PM MST | 30.3 | 9.56 | 19–62 |
| Nov 1, 8:00 PM MST | 25.5 | 9.51 | 19–62 |
| Nov 1, 7:00 PM MST | 22 | 9.47 | 19–62 |
| Nov 1, 6:00 PM MST | 20.4 | 9.45 | 19–62 |
| Nov 1, 5:00 PM MST | 14.8 | 9.37 | 19–62 |
| Nov 1, 4:00 PM MST | 14.2 | 9.36 | 19–62 |
| Nov 1, 3:00 PM MST | 14.8 | 9.37 | 19–62 |
| Nov 1, 2:00 PM MST | 14.2 | 9.36 | 19–62 |
| Nov 1, 1:00 PM MST | 12.4 | 9.33 | 19–62 |
| Nov 1, 12:00 PM MST | 11.9 | 9.32 | 19–62 |
| Nov 1, 11:00 AM MST | 11.9 | 9.32 | 19–62 |
| Nov 1, 10:00 AM MST | 12.4 | 9.33 | 19–62 |
| Nov 1, 9:00 AM MST | 13 | 9.34 | 19–62 |
| Nov 1, 8:00 AM MST | 13 | 9.34 | 19–62 |
| Nov 1, 7:00 AM MST | 13.6 | 9.35 | 19–62 |
| Nov 1, 6:00 AM MST | 14.2 | 9.36 | 19–62 |
| Nov 1, 5:00 AM MST | 13 | 9.34 | 19–62 |
| Nov 1, 4:00 AM MST | 3.31 | 9.12 | 19–62 |
| Nov 1, 3:00 AM MST | 3.31 | 9.12 | 19–62 |
| Nov 1, 2:00 AM MST | 3.31 | 9.12 | 19–62 |
| Nov 1, 1:00 AM MST | 3.57 | 9.13 | 19–62 |
| Nov 1, 1:00 AM MDT | 3.57 | 9.13 | 19–62 |
| Nov 1, 12:00 AM MDT | 3.57 | 9.13 | 19–62 |
| Oct 31, 11:00 PM MDT | 3.57 | 9.13 | 15–59 |
| Oct 31, 10:00 PM MDT | 3.06 | 9.11 | 15–59 |
| Oct 31, 9:00 PM MDT | 3.06 | 9.11 | 15–59 |
| Oct 31, 8:00 PM MDT | 3.06 | 9.11 | 15–59 |
| Oct 31, 7:00 PM MDT | 3.06 | 9.11 | 15–59 |
| Oct 31, 6:00 PM MDT | 3.31 | 9.12 | 15–59 |
| Oct 31, 5:00 PM MDT | 3.06 | 9.11 | 15–59 |
| Oct 31, 4:00 PM MDT | 1.27 | 9.01 | 15–59 |
| Oct 31, 3:00 PM MDT | 0.66 | 8.95 | 15–59 |
| Oct 31, 2:00 PM MDT | 0.74 | 8.96 | 15–59 |
| Oct 31, 1:00 PM MDT | 0.83 | 8.97 | 15–59 |
| Oct 31, 12:00 PM MDT | 0.93 | 8.98 | 15–59 |
| Oct 31, 11:00 AM MDT | 1.15 | 9 | 15–59 |
| Oct 31, 10:00 AM MDT | 1.27 | 9.01 | 15–59 |
| Oct 31, 9:00 AM MDT | 1.4 | 9.02 | 15–59 |
| Oct 31, 8:00 AM MDT | 1.54 | 9.03 | 15–59 |
| Oct 31, 7:00 AM MDT | 1.4 | 9.02 | 15–59 |
| Oct 31, 6:00 AM MDT | 1.4 | 9.02 | 15–59 |
| Oct 31, 5:00 AM MDT | 1.69 | 9.04 | 15–59 |
| Oct 31, 4:00 AM MDT | 1.85 | 9.05 | 15–59 |
| Oct 31, 3:00 AM MDT | 2.02 | 9.06 | 15–59 |
| Oct 31, 2:00 AM MDT | 2.02 | 9.06 | 15–59 |
| Oct 31, 1:00 AM MDT | 2.21 | 9.07 | 15–59 |
| Oct 31, 12:00 AM MDT | 1.85 | 9.05 | 15–59 |
| Oct 30, 11:00 PM MDT | 0.83 | 8.97 | 11–54 |
| Oct 30, 10:00 PM MDT | 0.83 | 8.97 | 11–54 |
| Oct 30, 9:00 PM MDT | 0.93 | 8.98 | 11–54 |
| Oct 30, 8:00 PM MDT | 1.04 | 8.99 | 11–54 |
| Oct 30, 7:00 PM MDT | 1.15 | 9 | 11–54 |
| Oct 30, 6:00 PM MDT | 1.27 | 9.01 | 11–54 |
| Oct 30, 5:00 PM MDT | 0.59 | 8.94 | 11–54 |
| Oct 30, 4:00 PM MDT | 0.52 | 8.93 | 11–54 |
| Oct 30, 3:00 PM MDT | 0.59 | 8.94 | 11–54 |
| Oct 30, 2:00 PM MDT | 0.59 | 8.94 | 11–54 |
| Oct 30, 1:00 PM MDT | 0.66 | 8.95 | 11–54 |
| Oct 30, 12:00 PM MDT | 0.74 | 8.96 | 11–54 |
| Oct 30, 11:00 AM MDT | 0.83 | 8.97 | 11–54 |
| Oct 30, 10:00 AM MDT | 1.04 | 8.99 | 11–54 |
| Oct 30, 9:00 AM MDT | 1.15 | 9 | 11–54 |
| Oct 30, 8:00 AM MDT | 1.4 | 9.02 | 11–54 |
| Oct 30, 7:00 AM MDT | 1.54 | 9.03 | 11–54 |
| Oct 30, 6:00 AM MDT | 1.54 | 9.03 | 11–54 |
| Oct 30, 5:00 AM MDT | 1.4 | 9.02 | 11–54 |
| Oct 30, 4:00 AM MDT | 1.69 | 9.04 | 11–54 |
| Oct 30, 3:00 AM MDT | 1.85 | 9.05 | 11–54 |
| Oct 30, 2:00 AM MDT | 2.02 | 9.06 | 11–54 |
| Oct 30, 1:00 AM MDT | 1.85 | 9.05 | 11–54 |
| Oct 30, 12:00 AM MDT | 1.69 | 9.04 | 11–54 |
| Oct 29, 11:00 PM MDT | 1.4 | 9.02 | 12–52 |
| Oct 29, 10:00 PM MDT | 1.4 | 9.02 | 12–52 |
Map of USGS gauge 06730500 and the river around it
Where BOULDER CREEK AT MOUTH NEAR LONGMONT, CO sits, with 1 other gauge on the same river and our water's map point.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer: the trout lines Colorado Parks and Wildlife uses are 71°F.
This gauge is on our page for Boulder Creek, but no agency page we read lists its species.
Normal for Nov 5: 16–72 ft³/s (middle half of 73 years of record). Now: 14.2 ft³/s, below normal.
Below normal for this date. 14.2 ft³/s is between the 10th and 25th percentiles of daily mean flow for Nov 5 at this gauge over 73 years of record (1928–2026): 10th 3.1, 25th 16, median 43, 75th 72, 90th 93 ft³/s.
Daily means on record for Nov 5: lowest 0.5 ft³/s, highest 131 ft³/s.
Classes as USGS labels them (hyswap: flow categories (WDFN_stats schema) (U.S. Geological Survey) ); percentiles from the USGS daily statistics (U.S. Geological Survey) (approved daily means; the reading is provisional and instantaneous).
Falling over 24 hours: discharge down 22%, from 18.2 to 14.2 ft³/s. Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 5, 9:26 PM MST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.