Don't need to mention Berkeley, which is ranked Top 5 in every program. Very only in the world.
Bio: UCSD, UC Davis, UCLA
Chem: UCLA
Math: UCLA
Physics: UCSB, UCSD, UCLA, UC Davis, UC Irvine, UC Santa Cruz
Earth Science: UCLA, UCSD, UCSC, UC Davis
Engineering:
Biomedical: UCSD
CheE: UCSB
Civil: UC Davis, UCLA, UCSD
EE: UCLA, UCSD, UCSB
ME: UCLA, UCSD