Rivermatics

USGS Streamgage 09202000

Boulder Creek below Boulder Lake, near Boulder, WY

Boulder Creek below Boulder Lake, near Boulder, WY is USGS streamgage 09202000 in Wyoming, monitoring river discharge in hydrologic subbasin 14040102. It sits on the Boulder Creek, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 126 square miles. Discharge records at this site go back to 1938. Typical flow runs near 385.6 cfs in July and 27.2 cfs in April, with the higher of the two arriving in July.

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Gauge details

State
Wyoming
Drainage area
126 sq mi
Gauge elevation
7,177 ft
Subbasin (HUC-8)
14040102
Coordinates
42.81936, -109.71714
USGS site number
09202000
Records begin
1938-11-01 (88 years)

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 35 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 0.8 10.2 39.8
February 1.7 12.1 46.5
March 3.5 12.5 49.2
April 6.4 27.2 78.5
May 100.2 306.8 863.3
June 442.2 937.3 1,905
July 197.6 385.6 871.1
August 55.6 137.6 250.2
September 18 74.8 172.9
October 7.5 33.2 117
November 0.8 11.5 62.9
December 1 8.9 49.8

All values in cubic feet per second (cfs).

Common questions

When does Boulder Creek below Boulder Lake, near Boulder, WY normally run highest?
June, on the long-term record. The median daily flow that month is about 937.3 cfs, against 8.9 cfs in December, 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 below Boulder Lake, near Boulder, WY?
It depends on the month. In January, half of days historically fall near 10.2 cfs, with the middle 80% of days between 0.8 and 39.8 cfs. The month-by-month table on this page gives the full range.
How long has Boulder Creek below Boulder Lake, near Boulder, WY been measured?
Discharge records at USGS site 09202000 begin in 1938, about 88 years, covering roughly 67 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Where is Boulder Creek below Boulder Lake, near Boulder, WY?
The gauge sits at 42.81936, -109.71714, in Wyoming, in hydrologic subbasin 14040102, at an elevation of about 7,177 feet, draining roughly 126 square miles.
Can I use Boulder Creek below Boulder Lake, near Boulder, WY 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