How Spring Floods Affect Deer

floods deerThis week a low-pressure system has brought steady rain and localized flooding to the Carolinas, and today it’s moving up the East Coast. Late April and especially May is also when floods are common along the Mississippi and other rivers and streams in the Midwest.

How does all this spring rain and flooding affect the whitetail deer?

The good news, biologists say that rising floodwaters of river and creeks won’t kill many if any adult deer, though it will displace the animals for days and perhaps weeks. But the deer will filter back into their habitats and core areas once the waters recede.

While pregnant does will move out of rising water now and for the next few weeks, the primary concern for deer herds in and around flood zones occurs later on in May and in early June, when the does start dropping fawns.

“But fawn survival in flood plains is typically very high, even during flood years,” says noted whitetail scientist Grant Woods.

“To cause any significant problems in a herd, the water levels would have to rise very rapidly and be timed when the peak of fawn births occur, and before the fawns are mobile. This is a narrow window of time. Rivers rarely rise that quickly on that timing, and does are excellent mothers!”

Another and perhaps more serious concern is where floodwaters might affect preferred fawning cover. “When does are forced to fawn in adjoining croplands or woods where there isn’t as much cover predation on the fawns can increase. But overall, I’m not worried about the fawns and the deer herds in a normal flood zone.”