The rate of service requests for addressing clogged storm drains made through Baltimore's 311 system per 1,000 residents. More than one service request may be made for the same issue but is logged as a unique request. Source: CitiStat Years Available: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020