Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

* We've detected you're using a mobile device. Find our mobile dedicated web site here.
Click to hideNews Bulletins
  • Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted. For more information, please see www.doi.gov/shutdown.

  • Please see news on new formats
  • Full News RSS icon

Site Map for Colorado

Click to hide state-specific text


Boulder County, Colorado
Hydrologic Unit Code 10190005
Latitude  40°01'07.2", Longitude 105°19'34.5" NAD83
Drainage area 24.2  square miles
Gage datum 5,750 feet above NGVD29
Location of the site in Colorado