Prokopovich, Nikola P. (1965). "Siltation and Pollution Problems in Spring Creek. Shasta County, Calif". Journal (American Water Works Association). 57 (8): 986–995. doi:10.1002/j.1551-8833.1965.tb01489.x. JSTOR41264524.
Nichols, A. L.; Willis, A. D.; Jeffres, C. A.; Deas, M. L. (2014). "Water Temperature Patterns Below Large Groundwater Springs: Management Implications for Coho Salmon in the Shasta River, California". River Research and Applications. 30 (4): 442–455. doi:10.1002/rra.2655. S2CID26643419.
Prokopovich, Nikola P. (1965). "Siltation and Pollution Problems in Spring Creek. Shasta County, Calif". Journal (American Water Works Association). 57 (8): 986–995. doi:10.1002/j.1551-8833.1965.tb01489.x. JSTOR41264524.
Nichols, A. L.; Willis, A. D.; Jeffres, C. A.; Deas, M. L. (2014). "Water Temperature Patterns Below Large Groundwater Springs: Management Implications for Coho Salmon in the Shasta River, California". River Research and Applications. 30 (4): 442–455. doi:10.1002/rra.2655. S2CID26643419.