Big Data is a big deal in local, state and federal governments. The avalanche of inputs from mobile devices and sensors is driving hardware, software and staff spending at all levels of government, since according to a new survey most agency officials say that they need Big Data analytics to meet their missions. Yet while they see a myriad of benefits, survey respondents say they are challenged to predict the return on Big Data investments. In part their concern is over the substantial challenges of implementing Big Data initiatives, including infrastructure and data quality issues.