Our clients are thought-leaders in their industries, willing to test new ideas and demonstrate new approaches. Our past and present clients include federal, state and local government, nonprofits, and private industry. The majority of Kestrel’s business comes from repeat clients and client referrals.


Our government clients include cities and counties, water and sanitation districts, resource conservation districts, ports, federal agencies and others.


City of Capitola, CA
City of Coachella, CA
→ City of Los Angeles Bureau of Sanitation, CA
City of Minneapolis,MN
City of Morro Bay, CA
City of Myrtle Creek, OR
City of Oxnard, CA
City of Pacific Grove, CA
City of San Bernardino, CA
City of San Diego, CA
City of Santa Cruz, CA
City of Seaside, CA
→ City of Seattle Public Utilities, WA
City of Watsonville, CA


Hood River County, OR
Santa Clara County Open Space Authority, CA
Santa Cruz County, CA

Special Districts

Davenport Sanitation District, CA
Elsinore Valley Municipal Water District, CA
Grassland Water District, CA
Mt. View Sanitary District, CA
Port Hueneme Water Agency, CA
Resource Conservation District of Santa Cruz County, CA
Sacramento Municipal Utility District, CA
San Simeon Community Services District, CA
Santa Cruz County Sanitation District, CA
Santa Cruz Port District, CA
Scotts Valley Water District, CA
Soquel Creek Water District, CA
South Bayside Waste Management Authority, CA
South Coast Water District, CA
Water Replenishment District of Southern California, CA


California State Coastal Conservancy
Central Coast Regional Water Quality Control Board, CA


Bureau of Reclamation
Monterey Bay National Marine Sanctuary


Private Sector

We add value to private sector projects by developing solutions that achieve multiple benefits.

t4 Spatial LLC
Ascent Environmental Inc.
California State Teacher’s Retirement System
California Water Service Company, CA
Carollo Engineers
Connecticut Green Bank
Fall Creek Engineering
→ GHD Engineers
HDR Engineering
Hazen & Sawyer
→ KEH & Associates
Kennedy Jenks Consultants Engineers & Scientists
MNS Engineers
Mission Markets
→ New Indy Containerboard
→ PIER 39, San Francisco
→ SWA Group
Tetra Tech


Non-profit organizations often become strategic partners who are critical to the success and implementation of  environmental restoration and conservation efforts. Non-profits have hired Kestrel to consult on funding strategies, project development and grant writing. We assist the Climate Bonds Initiative with industry review of draft criteria for climate bonds verification.

Climate Bonds Initiative
Big Sur Land Trust
Earth Island Institute
Elkhorn Slough Foundation
→ Regional Water Management Foundation