Livestock ranchers are counting their losses as cleanup begins.
Thousands of cattle are left dead following Friday's mega storm.
These images near Union Center are only a glimpse of what is spread all over the western part of the state.
Ranchers spent all day Sunday and Monday trying to gather displaced cattle but they are facing plenty of challenges such as knowing which herds belong to which owners.
As they days and weeks continue, more cattle will unfortunately die.
"There's pneumonia, we've seen ones that were alive yesterday that didn't make it through the night," said cattle rancher Chris Grubl. "They're just too weak and it just took too much out of them."
Grubl says some ranchers have lost 20 percent of their livestock, while other losses are as much as 90 percent.
Contact the South Dakota Animal Industry Board at 605 773-3321 for on-farm carcass disposal and questions regarding livestock identification, or visit this web page.
The South Dakota Department of Agriculture is also asking ranchers to document losses.
Producers should document all livestock losses with pictures, vaccination and hauling receipts, or any other records for possible future use in disaster relief programs.
Third-party verification of losses is recommended.