This is the story I never heard before.

In the shadow of his father's fame, his son, Hans, an engineer,

made a historical contribution in taming the Mississippi River,

an almost impossible task then, that saved the city, New Orleans, etc.

Hans Albert Einstein (/aɪnˈstaɪn, -ˈʃtaɪn/ eyen-STYNE, -⁠SHTYNE; May 14, 1904 – July 26, 1973) was a Swiss-American engineer and educator, the second child and first son of Albert Einstein and Mileva Marić. Hans A. Einstein was a long-time professor of Hydraulic Engineering at the University of California, Berkeley.^[1][2]

Einstein was widely recognized for his research on sediment transport.^[3] To honor his outstanding achievement in hydraulic engineering, the American Society of Civil Engineers established the "Hans Albert Einstein Award" in 1988 and the annual award is given to those who have made significant contributions to the field.^{[4][5](from Internet)}

The Atchafalaya Basin, or Atchafalaya Swamp (/əˌtʃæfəˈlaɪə/; Louisiana French: L'Atchafalaya, [latʃafalaˈja]), is the largest wetland and swamp in the United States. Located in south central Louisiana, it is a combination of wetlands and river deltaarea where the Atchafalaya River and the Gulf of Mexico converge. The river stretches from near Simmesport in the north through parts of eight parishes to the Morgan City southern area.

The Atchafalaya is different among Louisiana basins because it has a growing delta system (see illustration) with wetlands that are almost stable.^[1] The basin contains about 70% forest habitat and about 30% marsh and open water. It contains the largest contiguous block of forested wetlands remaining (about 35%) in the lower Mississippi River valley and the largest block of floodplain forest in the United States. Best known for its iconic cypress-tupelo swamps, at 260,000 acres (110,000 ha), this block of forest represents the largest remaining contiguous tract of coastal cypress in the United States.^{[2](from Internet)}

The Atchafalaya Basin, or Atchafalaya Swamp (/əˌtʃæfəˈlaɪə/; Louisiana French: L'Atchafalaya, [latʃafalaˈja]), is the largest wetland and swamp in the United States. Located in south central Louisiana, it is a combination of wetlands and river deltaarea where the Atchafalaya River and the Gulf of Mexico converge. The river stretches from near Simmesport in the north through parts of eight parishes to the Morgan City southern area.

The Atchafalaya is different among Louisiana basins because it has a growing delta system (see illustration) with wetlands that are almost stable.^[1] The basin contains about 70% forest habitat and about 30% marsh and open water. It contains the largest contiguous block of forested wetlands remaining (about 35%) in the lower Mississippi River valley and the largest block of floodplain forest in the United States. Best known for its iconic cypress-tupelo swamps, at 260,000 acres (110,000 ha), this block of forest represents the largest remaining contiguous tract of coastal cypress in the United States.^{[2](from Internet)}