USDA Forest Service

Pacific Southwest Research Station

Pacific Southwest
Research Station

1731 Research Park Dr.
Davis, CA 95618
(530) 759-1700
United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.
[image:] TreeSearch, links to

Giving you access to more than 50,000 online USDA Forest Service Research publications.

Keep in Touch
Facebook logoTwitter logoRSS logo
PSW on Twitter
PSW Publications List
What's new
Damage after the Woolsey Fire in California.

Recent studies have found that demographic factors play a big role in how homeowners perceive and respond to wildfire risk.

The Kings River Experimental Watershed project has been collecting data about headwater streams since 2002. USDA Forest Service photo by Jamie Hinrichs.

To understand the relationship between drought and water use in trees, PSW hydrologists are looking at underlying bedrock in the Kings River Experimental Watershed.

A mixed-conifer stand that has been thinned and then burned within the last 5 to 10 years, McCloud Ranger District, Shasta-Trinity National Forest

This assessment examines the range of conditions that exist among the yellow pine and mixed-conifer forests of northwestern California and southwestern Oregon.

The McCash Fire burns into areas that recently burned (brown areas) and areas that had burned in previous wildfires in the Klamath Mountains.

A recent Pacific Southwest Research Station study examined the role of previous fires in predicting and reducing the severity of future wildfires in the western United States.

Fire personnel on the Six Rivers National Forest in California conducting a prescribed cultural burn on a strategic ridge along a road to improve opportunities for future wildland fire response and Tribal gathering access. U.S. Forest Service photo by Frank Lake.

This recent journal article discusses various approaches in working with American Indians through research and management partnerships in the fields of wildland fire, forestry, and fuels.

Science that makes a difference.

The Pacific Southwest Research Station is a world leader in natural resources research through our scientific excellence and responsiveness to the needs of current and future generations.

We represent the research and development branch of the USDA Forest Service in the states of California and Hawaii and the U.S. affiliated Pacific Islands. Our mission is to develop and communicate science needed to sustain forest ecosystems and their benefits to society.

Pacific Southwest Research Station Director's Honor Award Recipients for 2022

The 2022 Pacific Southwest Research Station Director's Honor Awards recognize the outstanding contributions and excellence that employees added to the community and research & development throughout the year. The significant, invaluable contributes to the USDA Forest Service's Mission and goals are honored in the following categories: Community Enhancement and Diversity Award, Distinguished Science, Innovation and Service in Business Operations, Innovation and Service in Research, Improving the Station Workplace, and Science Delivery.

Richard Barhydt, the station director for Pacific Southwest Research Station (PSW), offers his appreciation to all who strive for the extraordinary in service of PSW, the Forest Service, and the public every year.

View the full list of award recipients and their accomplishments.

[image-text]: Recent Publications
Cover image psw-inf-001
Forest management handbook for small-parcel landowners in the Sierra Nevada and southern Cascade Range

A significant portion of Sierra Nevada and southern Cascades forests are owned and managed as small parcels (10 to 100 acres) by nonindustrial private landowners. This handbook is for such landowners to help them develop a sound forest management strategy for their property.

Cover image for PSW's charter
Science to Enhance Ecosystem Stewardship
Pacific Southwest Research Station Charter 2022-2031

The Pacific Southwest Research Station charter highlights how partners like local, State, Tribal, and Federal agencies and policymakers, universities, communities, indigenous groups, private industry, and non-profit entities help shape PSW both formally and informally.

Cover image psw-gtr-274
Measuring individual ozone exposure in Los Angeles urban parks

Exposure to ozone pollution has serious health risks. Damage to lungs and cardiovascular health are of particular concern for vulnerable populations, including children, the elderly, and individuals from "disadvantaged" communities whose health may already be compromised.