Revision History for U.S. Geological Survey Fact Sheet 2018-3013 By Paul A. Buchanan, Maureen Downing-Kunz, David H. Schoellhamer, and Daniel N. Livsey Continuous water-quality and suspended-sediment transport monitoring in the San Francisco Bay, California, water years 2014–15 ----------------------------------------------------- Posted online March 8, 2018 ----------------------------------------------------- Revised and reposted May 11, 2018 Figure 3, the caption was changed from "Figure 3. Rating curve that relates turbidity to suspended-sediment concentrations (SSC): upper sensor at Richmond–San Rafael Bridge (station number 375607122264701), Central San Francisco Bay, California, water year 2015 (October 1, 2014–September 30, 2015). Output of an optical turbidity sensor is related to the SSC measured in water samples. to "Figure 3. Example rating curve that relates turbidity to suspended-sediment concentrations (SSC) using the nonparametric repeated median method (Siegel, 1982). Output of an optical turbidity sensor is related to the SSC measured in water samples." New reference added: Siegel, A.R., 1982, Robust regression using repeated medians: Biometrika, v. 69, p. 242–244.