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Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at will be replaced by the National Water Prediction Service (NWPS), with a target of March 2024. Existing AHPS content and features will be preserved and expanded within NWPS.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Hydrograph River at a Glance Download
Boulder Creek (CO) at Boulder Stage (ft)Flow (cfs)MHFDBOCC2(plotting HGIRZ) Graph Created (5:00AM Oct 2, 2023)Flood Stage is 8 ft
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About this graph
Tabular Data (UTC)
Tabular Data (MDT)
XML Data
RSS Files
Datum: NAVD88
NOTE: Forecasts for the Boulder Creek (CO) at Boulder are issued as needed during times of high water, but are not routinely available.
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Upstream Gauge - near Orodell Upstream Gauge Downstream Gauge Downstream Gauge - near Kersey
Flood Categories (in feet)
Major Flood Stage: 12.5
Moderate Flood Stage: 10
Flood Stage: 8
Action Stage: 5.5
Low Stage (in feet): -9999

Historic Crests
(1) 8.18 ft on 09/12/2013
(2) 5.76 ft on 08/14/2008
(3) 5.10 ft on 05/30/2014
(4) 4.43 ft on 07/13/2011
(5) 4.24 ft on 06/14/2015
(6) 4.19 ft on 06/07/2010
(7) 4.00 ft on 06/14/2016 (P)
(8) 3.80 ft on 06/13/2017
(9) 3.79 ft on 06/07/2021
(10) 3.74 ft on 07/07/2012
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 3.79 ft on 06/07/2021
(2) 3.67 ft on 07/01/2019
(3) 3.43 ft on 06/18/2018
(4) 3.80 ft on 06/13/2017
(5) 4.00 ft on 06/14/2016 (P)
(6) 4.24 ft on 06/14/2015
(7) 5.10 ft on 05/30/2014
(8) 8.18 ft on 09/12/2013
(9) 3.74 ft on 07/07/2012
(10) 4.43 ft on 07/13/2011
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

Zoom Level:14
KML Image
Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
13.5 There is extensive flooding of buildings and streets near Boulder Creek in the city of Boulder.
13 Water flows over or around numerous bridges crossing Boulder Creek.
12.5 Buildings close to Boulder Creek between 9th Street and Broadway, Folsom and 28th Streets and between Arapahoe Avenue and Foothills Parkway flood in the city of Boulder.
10 Boulder Creek flows into parking lots and approaches buildings in several areas in the city of Boulder. Boulder Creek rises to the bottom of the Arapahoe Avenue Bridge.
8 Boulder Creek Trail (bike path) is inundated with minor overbank flow in the city of Boulder. This level represents a flood that has a 10-percent chance of being equaled or exceeded in any given year. For more information click here.
5.5 Sections of the Boulder Creek Trail (bike path) flood.
(1) Looking Upstream
(2) Looking Downstream
About This Location Collapse

Latitude: 40.015000° N, Longitude: 105.279000° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 8 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 5340 5348 Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Additional Information Collapse
Observations provided by the Mile High Flood District
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Denver/Boulder Weather Forecast Office
325 Broadway
Boulder, CO 80305-3328
(303) 494-4221
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Page last modified: 2-Nov-2020 7:28 PM
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