The Aberdeen Region encompasses the counties of Beadle, Brookings, Brown, part of Buffalo, Clark, Codington, Day, Deuel, Edmunds, Faulk, Grant, Hamlin, Hand, Hyde, Kingsbury, most of McPherson, Marshall, part of Miner, Roberts and Spink. It is divided into three areas with local offices in Aberdeen, Huron, and Watertown.

Region Engineer:
PO Box 1767
Aberdeen, SD 57401
Physical Address: 2735 W HWY 12
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Jeff Senst
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605.626.2244
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@AberdeenRegEng
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Region Operations Engineer:
PO Box 1767
Aberdeen, SD 57401
Physical Address: 2735 W HWY 12
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Mark Peterson
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605.626.2244
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@AberdeenOpsEng
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Aberdeen Area Engineer:
PO Box 1767
Aberdeen, SD 57401
Physical Address: 2735 W HWY 12
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Phil Dwight
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605.626.7885
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@AberdeenAreaEng
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Huron Area Engineer:
PO Box 940
Huron, SD 57350-0940
Physical Address: 901 Dakota N.
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Brad Letcher
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605.353.7140
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@HuronAreaEng
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Watertown Area Engineer:
PO Box 1446
Watertown, SD 57201-1446
Physical Address: 5000 9th Ave. SE
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Matt Brey
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605.882.5166
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@WatertwnAreaEng
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