Municipal artesian well affected by flash flooding
Groundwater samples were collected from artesian wells in flood- and flash flood-affected areas of the Taquari Valley, southern Brazil, 143 days after the May 2024 flood peak. Bacterial communities were characterized by Illumina MiSeq sequencing of the V3-V4 region of the 16S rRNA gene to assess the impact of extreme flooding on groundwater microbial composition.