Rivermatics

USGS Streamgage 06730200

Boulder Creek at North 75Th St. near Boulder, CO

Boulder Creek at North 75Th St. near Boulder, CO is USGS streamgage 06730200 in Colorado, monitoring river discharge in hydrologic subbasin 10190005. It sits on the Boulder Creek, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 307 square miles. Discharge records at this site go back to 1986. Typical flow runs near 133.4 cfs in July and 52.5 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Colorado
Drainage area
307 sq mi
Gauge elevation
5,109 ft
Subbasin (HUC-8)
10190005
Coordinates
40.05167, -105.17833
USGS site number
06730200
Records begin
1986-10-01 (40 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Boulder Creek at North 75Th St. near Boulder, CO. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
29.6 33.1 36.6
28.1 32.7 38.7
26.2 31.5 38.3
25.4 31.6 40.5
24 31.1 39.4
22.8 31.3 41.6
20.5 30.8 41.5
18.1 29.1 39.1
17.2 27.9 37.8
15.3 26.2 36
18.1 27.1 36.5
17.6 26.5 36.2
15.5 24.8 34.4
14.4 24.2 34.2

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 40 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 8.5 27.2 57
February 6.9 25.4 55.1
March 6.6 30.5 68.6
April 13.5 52.5 141.5
May 59.9 142.3 383.2
June 91.1 235.1 642.4
July 63.3 133.4 290.8
August 45.5 86.8 179.5
September 27.2 52.9 106.5
October 13 37.9 72.4
November 5.5 27.3 67.2
December 5.9 27.1 59.2

All values in cubic feet per second (cfs).

Common questions

When does Boulder Creek at North 75Th St. near Boulder, CO normally run highest?
June, on the long-term record. The median daily flow that month is about 235.1 cfs, against 25.4 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Boulder Creek at North 75Th St. near Boulder, CO?
It depends on the month. In January, half of days historically fall near 27.2 cfs, with the middle 80% of days between 8.5 and 57 cfs. The month-by-month table on this page gives the full range.
How long has Boulder Creek at North 75Th St. near Boulder, CO been measured?
Discharge records at USGS site 06730200 begin in 1986, about 40 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Boulder Creek at North 75Th St. near Boulder, CO?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Boulder Creek at North 75Th St. near Boulder, CO?
The gauge sits at 40.05167, -105.17833, in Colorado, in hydrologic subbasin 10190005, at an elevation of about 5,109 feet, draining roughly 307 square miles.
Can I use Boulder Creek at North 75Th St. near Boulder, CO data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Boulder Creek

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Boulder Creek in full.

Other gauges in this subbasin