Officials in California worry about the collapse of aging levees in the delta of the Sacramento and San Joaquin Rivers , which might allow surging seawater to contaminate much of the state 's drinking water supply .
California /location/location/contains Sacramento
NNS IN NNP VBP IN DT NN IN VBG NNS IN DT NN IN DT NNP CC NNP NNP NNP , WDT MD VB VBG NN TO VB JJ IN DT NN POS NN NN NN .
California
LOCATION
Sacramento
LOCATION
/location/location/contains