Protecting and restoring watershed health since 2005

Left Hand Watershed Center

Left Hand Watershed Center protects and restores watersheds for people and the environment using a science-based approach.

As a stakeholder driven, non-profit organization located in Boulder County, Colorado, the Watershed Center serves the community by monitoring and protecting water quality and important water sources for over 20,000 residential and agricultural water users, implementing restoration projects, and striving to build a strong stewardship ethic within the community.

Join us in protecting and restoring watershed health

Catch the Hatch!

Become a Citizen Scientist!

Track mayfly emergence on local creeks as an indicator of watershed health and inform science on mayfly phenology.


Canyon Watershed Restoration Project

Adaptive Management Guide

Left Hand Watershed Center in the News

Stream Stewardship and Recovery Handbook

Upper Left Hand

Before and After Restoration


Before and After Restoration


Before and After Restoration


Learn more about how we protect and restore Front Range watershed health.

Watershed Insights

Lefthand Watershed in History


Colorado’s First Inter-basin Water Transfer and the Coffin versus Left Hand Ditch Water Case

How did an 1879 water conflict in the Left Hand Creek headwaters come to influence water law in nine western states?


and Left Hand Creek’s Legacy of Mining

Following the discovery of gold in Denver in 1859, it did not take long for miners to work their way up the creeks into the mountains, panning for gold and searching for the veins from which the nuggets came.


is it a Volcano?

Standing rather proudly in the shadow of the Rocky Mountains along the front range of Northern Colorado is a very unique little mountain affectionately known as Haystack Mountain, earning its name by the early dairy farmers who settled on its flanks.