The findings indicate that although the Ellicott City storms and floods from July 30, 2016, and May 27, 2018, are considered very rare in terms of their probability of occurrence, other storms have occurred in the Maryland and Delaware regions in the past that have produced comparable runoff characteristics relative to drainage-area magnitude. To provide historical perspective on these floods in Ellicott City, results from the indirect discharge measurement computations were compared to peak flows from 75 USGS streamgages and 6 miscellaneous sites in Maryland and Delaware that resulted from intense storms in August and September 1971 (Carpenter, 1974). Peak discharges computed from the indirect discharge measurements for Hudson Branch, Tiber Branch, and New Cut Branch are presented for the storms and floods of July 30, 2016, and May 27, 2018. The storms and flood characteristics for July 30, 2016, and May 27, 2018, are described. This fact sheet describes the basin characteristics, hydrologic characteristics, and flood history of the Ellicott City, Maryland, area. Coverage: 2016 Ellicott City flood Baltimore Sun at 1:53 pm Expand Autoplay 1 of 161 The store of Sweet Elizabeth Jane, formerly Caplans, during a tour of the flood damage. Peak flows were computed using flow-through-culvert techniques with road overflow for Hudson Branch and slope-area techniques for Tiber Branch and New Cut Branch. Engineers survey the damage to sidewalks, roads and stores after a severe flash flood on the evening of July 30, 2016. Precipitation from the 2016 event totaled 6. 1), was severely flooded by intense, short-duration rainfall that resulted in loss of life significant damage to buildings, roads, infrastructure and hundreds of vehicles washed away. High-water marks were flagged on selected reaches of three streams, Hudson Branch (station 01589017), Tiber Branch (station 01589019), and New Cut Branch (station 01589021) (fig. IntroductionOn July 30, 2016, and May 27, 2018, the downtown area of Ellicott City, Maryland (fig. Geological Survey (USGS) performed indirect discharge measurements to determine peak flow on the three streams that drain through the downtown area of Ellicott City and empty into the Patapsco River.
In the aftermath of both storms, personnel from the U.S. Posted Sun, at 7:37 am ET Updated Sun, at 6:13 pm ET ELLICOTT CITY, MD Two fatalities have been reported as a result of the flood that severely damaged roads. The National Weather Service (NWS) reported that 5.96 inches of rainfall occurred within a two hour period. Precipitation from the 2018 storm totaled 6.56 inches in 3 hours (National Oceanic and Atmospheric Administration, 2018). On Saturday, July 30, 2016, torrential rains passed through Howard County, Maryland resulting in severe flash flooding through historic downtown Ellicott City. Precipitation from the 2016 event totaled 6.60 inches in 3 hours (National Oceanic and Atmospheric Administration, 2016).
On July 30, 2016, and May 27, 2018, the downtown area of Ellicott City, Maryland (fig.
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