Providing biological and physical assessments of aquatic and riparian ecosystems 

Spring Rivers provides biological and physical assessments of aquatic and riparian ecosystems for private entities, non-profit organizations, non-governmental organizations, and local, state, and federal government agencies.  

Biological Studies and Surveys

Spring Rivers offers biological surveys and specializes in surveys for special status taxa. 

Physical and Hydrological Assessments

Spring Rivers offers hydrological and physical stream channel assessment services. 

Contact Us

Spring Rivers Ecological Sciences LLC

​PO Box 153 Cassel CA, 96016​

(530) 335-5446