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Research about Delaware, Maryland

Source-linked reports with geographic coverage including Delaware, Maryland.

At least 55 records · Page 3Linked to original sources
USGS1981

Seismicity map of the states of Delaware and Maryland

The earthquake data shown on this map and listed in tables 1 and 2 are a list of earthquakes that were originally used in preparing the Seismic Risk Studies in the United States (Algermissen, 1969) which have been recompiled and updated through 1977. These data have been reexamined which resulted in some revisions of epicenters and intensities as well as assignment of intensities to earthquakes that previously had none assigned. Intensity values were updated from new and additional data sources that were not available at the time of original compilation. Some epicenters were relocated on the basis of new information. The data shown in table 1 and 2 are estimates of the most accurate epicenter, magnitude, and intensity of each earthquake, on the basis of historical and current information. Some of the aftershocks from large earthquakes are listed but are incomplete in many instances, especially for ones that occurred before seismic instruments were in universal usage.

Delaware, Maryland↗
USGS1974

Floods of August and September 1971 in Maryland and Delaware

Intense rainfall, resulting mostly from severe thunderstorms in August and September 1971 caused considerable flooding throughout much of Maryland and Delaware. Precipitation totals of 5.47 inches in 3 hours and 12.6 inches in 12 hours were reported for the most severe storm of the period which occurred on Aug. 1-2, and was centered in southeast Baltimore County, Md. Total storm damage for the 2 months was estimated to exceed 10 million dollars. Fourteen lives were lost and extensive damage was done to homes, businesses, crops, bridges, culverts, and roadways. Flood discharge data are presented for 75 gaging stations and for 6 miscellaneous sites. New peaks of record occurred at 32 of the gaging stations. The maximum unit peak discharge rate recorded was 2,400 cubic fee t per second per square mile.

Delaware, Maryland↗