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Colorado Boulder Creek

Characteristics updated 11 months ago
Flow updated about 1 hour ago
Available Segments 1

Explore Boulder Creek in Colorado: A Pristine Fly Fishing Destination

Welcome to Boulder Creek, a pristine fly fishing destination nestled in the scenic landscapes of Colorado. This comprehensive guide offers concise and informative information about Boulder Creek, covering challenges, the preferred season, the ideal flow rate, river access, and more. We highlight three of the highest-rated local fly shops and guides, providing novice and experienced anglers with accurate and timely information for their fishing adventures. River stewardship, sustainability, and conservation take top priority, emphasizing the practice of Leave No Trace principles.


Boulder Creek presents anglers with various challenges that require skill and adaptability. The creek's fast-flowing waters demand precise casting and delicate presentation to entice the trout. The narrow and rocky sections of the stream can test angler navigation skills, requiring careful wading and attention to safety. Additionally, the creek's popularity may increase angler pressure, requiring strategic planning to find quieter spots along its course.

Preferred Season

The preferred season for fishing on Boulder Creek spans from late spring to early fall. During this time, the creek comes alive with abundant insect activity, triggering exciting surface feeding and attracting trout species, including browns and rainbows. The mild temperatures and picturesque surroundings of this season make it an ideal time to indulge in the beauty and tranquility of Boulder Creek.

Ideal Flow Rate

To optimize your fly fishing experience on Boulder Creek, an excellent flow rate typically ranges between 50 and 200 cubic feet per second (CFS). This flow rate offers a balanced combination of manageable water conditions and active fish behavior. For up-to-date information on river flow data, including mean temperature and CFS rates, visit, providing essential information to plan your fishing trips effectively.

River Access Issues

While Boulder Creek offers exceptional fishing opportunities, awareness of potential river access issues is essential. Some sections of the creek flow through private property or restricted areas, limiting access for anglers. Respect any signage or regulations, and familiarize yourself with public access points to ensure an enjoyable and responsible fishing experience while preserving the creek's natural environment.

Local Fly Shops and Guides

  • Rocky Mountain Anglers - Explore Boulder Creek with experienced guides at Rocky Mountain Anglers. Committed to river stewardship and sustainability, their knowledgeable staff will ensure an unforgettable fishing adventure.
  • Front Range Anglers - Front Range Anglers is dedicated to providing a personalized and sustainable fishing experience on Boulder Creek. Their passionate guides prioritize river stewardship while helping you maximize your fishing. 

River Conservation

River stewardship, sustainability, and conservation are at the forefront of Boulder Creek fishing. To learn more about river conservation efforts and get involved, visit the nonprofit organization Running Rivers.

Characteristics & Metrics

⋅ Jun 24, 2022
Flows are decreasing daily, which is helping the clarity.
ALL-TIME Loading....
TODAY Loading....

Current Flow

Boulder Creek - Colorado
Gage Station Temp
(ft ³/s)
(ft ³/s)
boulder creek at north 75th st. near boulder, co n/a 12.7 117
boulder creek at mouth near longmont, co n/a 16.7 172
* Mean data is from Sunday - April 21, 2024
** Updated about 1 hour ago
*** streamflow is the volume of water flowing past a given point in the stream in a given period of time.(USGS)


* Based on YTD -- 2024
** Toggle legend names for an uncluttered view

Additional Resources

River and steam flow data are acquired from multiped sources. This feature is only available in select states (Colorado only). Flows are updated multiple times a day. Data might be unavailable due to ice or other objects obstructing the gage.

Update about 8 hours ago

Flow: 69 cfs

Data Source: DWR


* 1 segment listed for the Boulder Creek
Name Fishy Updated
Chapman Drive · Pretty Darn Fishy almost 2 years ago


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Mar 19, 2022

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Jun 14, 2022

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Jun 14, 2022

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Jun 15, 2022


Craig Hoffman

7 months ago

As of early Oct, flows are skinny. Certainly fishable.
Craig Hoffman

almost 2 years ago

Tough fishing. Just upstream from Elephant buttress. Good flows.

Known Fish

Known Fish of the Boulder Creek
Type Species Up To
Trout Brown 5 in.
Trout Brook 5 in.
* Fish likely to be found. Size is a approximation.