The following fact sheets address the safety of consuming produce from home gardens that have been flooded, as well as whether it is safe to continue gardening on a flooded site after the waters subside.
The South Dakota Extension Service publication, "Flooded Gardens" discusses whether and how to salvage garden produce, and also whether to plant on previously flooded land.
More at: http://eden.lsu.edu/Topics/Hazards/Floods/Recovery/Pages/Agriculture.aspx
"Information for Flood Damaged Field Crops" from Purdue University Dept. of Agronomy includes an extensive list of links to help farmers make crop management decisions in the aftermath of flooding.
"Managing Flood Damaged Crops" from Penn State Cooperative Extension has recommendations on whether or not farmers can harvest and market corn for silage or grain, and hay/pasture and other crops following a flood.
Last updated July 16, 2021