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Boulder Creek (CO) at North 75TH St.

Highest listed crest 10.60 ftFlood stage 8.0 ft32 crests since 1987

The Boulder Creek (CO) at North 75TH St. crested at major flood stage 1 time among the 32 crests the National Weather Service lists from 1987 to 2021. The highest, 10.60 ft on September 13, 2013, was major flooding, 2.60 feet above flood stage. 1 other gauge on the Boulder Creek (CO) crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
10.60 ft
September 13, 2013; 8,400 cubic feet per second
Flood stage
8.0 ft
Major flooding from 10.0 ft
Crests at major
1
6th of 100 gauges in Colorado
Most recent flood crest
September 13, 2013
10.60 ft, major flooding
Location
Boulder County
Near Boulder (4.3 mi), Lafayette (5.7 mi), Louisville (6.0 mi)

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Boulder Creek (CO) at North 75TH St.
Action stage7.51May 17, 1995The level at which the NWS or its partners begin to take action
Flood stage (minor)8.00—Minimal or no property damage, but possibly some public threat
Moderate flood stage9.00—Some inundation of structures and roads near the stream
Major flood stage10.01Sep 13, 2013Extensive inundation of structures and roads

Every listed crest

32 crests from 1987 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Boulder Creek (CO) at North 75TH St., 1987 to 2021 4681012ft Flood stage 8.0 ftMajor 10.0 ft Jun 9, 1987: 6.76 ft, below flood stage; 1,080 cubic feet per secondJun 18, 1988: 6.33 ft, below flood stage; 663 cubic feet per secondJun 3, 1989: 6.21 ft, below flood stage; 542 cubic feet per secondApr 29, 1990: 6.21 ft, below flood stage; 542 cubic feet per secondJun 1, 1991: 6.72 ft, below flood stage; 1,090 cubic feet per secondAug 24, 1992: 5.94 ft, below flood stage; 371 cubic feet per secondJun 18, 1993: 6.65 ft, below flood stage; 957 cubic feet per secondAug 11, 1994: 6.47 ft, below flood stage; 769 cubic feet per secondMay 17, 1995: 7.85 ft, action stage; 1,950 cubic feet per secondMay 26, 1996: 6.97 ft, below flood stage; 1,000 cubic feet per secondJun 13, 1997: 7.32 ft, below flood stage; 1,500 cubic feet per secondJul 30, 1998: 6.32 ft, below flood stage; 554 cubic feet per secondAug 5, 1999: 7.16 ft, below flood stage; 1,330 cubic feet per secondJul 17, 2000: 7.00 ft, below flood stage; 1,180 cubic feet per secondAug 9, 2001: 6.21 ft, below flood stage; 548 cubic feet per secondMay 24, 2002: 6.05 ft, below flood stage; 443 cubic feet per secondJul 9, 2006: 6.31 ft, below flood stage; 648 cubic feet per secondJun 7, 2007: 5.84 ft, below flood stage; 343 cubic feet per secondJun 5, 2008: 6.10 ft, below flood stage; 493 cubic feet per secondJun 27, 2009: 6.34 ft, below flood stage; 667 cubic feet per secondJun 14, 2010: 6.71 ft, below flood stage; 1,020 cubic feet per secondJul 13, 2011: 6.98 ft, below flood stage; 1,220 cubic feet per secondJul 7, 2012: 6.66 ft, below flood stage; 863 cubic feet per secondSep 13, 2013: 10.60 ft, major flooding; 8,400 cubic feet per secondMay 30, 2014: 7.11 ft, below flood stage; 120 cubic feet per secondMay 9, 2015: 7.41 ft, below flood stage; 1,460 cubic feet per secondJun 14, 2016: 6.62 ft, below flood stage; 842 cubic feet per secondMay 18, 2017: 6.60 ft, below flood stage; 828 cubic feet per secondMay 18, 2018: 6.66 ft, below flood stage; 872 cubic feet per secondJul 2, 2019: 6.61 ft, below flood stage; 835 cubic feet per secondMay 24, 2020: 6.53 ft, below flood stage; 776 cubic feet per secondMay 30, 2021: 6.71 ft, below flood stage; 909 cubic feet per second Highest, 10.60 ft, Sep 13, 2013 1990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Boulder Creek (CO) at North 75TH St. 1980s: 0 1990s: 0 2000s: 0 2010s: 1 1 2020s: 0 1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Boulder Creek (CO) at North 75TH St.
1Sep 13, 201310.60+2.60Major8,400
2May 17, 19957.85−0.15Action1,950
3May 9, 20157.41−0.59Below flood stage1,460
4Jun 13, 19977.32−0.68Below flood stage1,500
5Aug 5, 19997.16−0.84Below flood stage1,330
6May 30, 20147.11−0.89Below flood stage120
7Jul 17, 20007.00−1.00Below flood stage1,180
8Jul 13, 20116.98−1.02Below flood stage1,220
9May 26, 19966.97−1.03Below flood stage1,000
10Jun 9, 19876.76−1.24Below flood stage1,080
11Jun 1, 19916.72−1.28Below flood stage1,090
12Jun 14, 20106.71−1.29Below flood stage1,020
13May 30, 20216.71−1.29Below flood stage909
14Jul 7, 20126.66−1.34Below flood stage863
15May 18, 20186.66−1.34Below flood stage872
16Jun 18, 19936.65−1.35Below flood stage957
17Jun 14, 20166.62−1.38Below flood stage842
18Jul 2, 20196.61−1.39Below flood stage835
19May 18, 20176.60−1.40Below flood stage828
20May 24, 20206.53−1.47Below flood stage776
21Aug 11, 19946.47−1.53Below flood stage769
22Jun 27, 20096.34−1.66Below flood stage667
23Jun 18, 19886.33−1.67Below flood stage663
24Jul 30, 19986.32−1.68Below flood stage554
25Jul 9, 20066.31−1.69Below flood stage648
26Jun 3, 19896.21−1.79Below flood stage542
27Apr 29, 19906.21−1.79Below flood stage542
28Aug 9, 20016.21−1.79Below flood stage548
29Jun 5, 20086.10−1.90Below flood stage493
30May 24, 20026.05−1.95Below flood stage443
31Aug 24, 19925.94−2.06Below flood stage371
32Jun 7, 20075.84−2.16Below flood stage343

The worst floods along the Boulder Creek (CO)

For this gauge's highest crests, the other gauges on the Boulder Creek (CO) that crested above flood stage within a week.

September 13, 2013: 10.60 ft here, major flooding

  • Broadway StCO · Sep 12, 2013 · 8.18 ft · Minor · its highest

Gauges on the Boulder Creek (CO)

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Boulder Creek (CO)
North 75TH St. this gaugeCO8.010.60 ft, Sep 13, 20131
Broadway StCO8.08.18 ft, Sep 12, 20130
NederlandCO5.55.50 ft, Jun 22, 19950
OrodellCO4.04.31 ft, Jun 6, 19210

Other gauges in Boulder County

Flood gauges in Boulder County
Broadway St8.08.18 ft, Sep 12, 20130
Nederland5.55.50 ft, Jun 22, 19950
Orodell4.04.31 ft, Jun 6, 19210
Jamestown4.54.60 ft, Apr 30, 19990
Nederland4.55.37 ft, Jun 2, 19140
Lyons8.013.00 ft, Sep 12, 20131
Eldorado Springs5.05.43 ft, Sep 12, 20130
Lyons6.06.50 ft, May 29, 19950

Boulder County: every hazard · River floods across the country · Colorado

NOAA National Water Prediction Service, gauge BOLC2, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.