Contact List

U.S. Geological Survey Open-File Report 03-119


David J. Holtschlag
Hydrologist
U.S. Geological Survey
6520 Mercantile Way, Suite 5
Lansing, MI 48911

(517) 887-8910 (voice)
(517) 887-8937 (fax)
email: dholtschlag@usgs.gov

John A. Koschik
Hydraulic Engineer
U.S. Army Corps of Engineers
477 Michigan Ave.
Detroit, MI 48226

(313) 226-2394 (voice)
email: John.A.Koschik@lre02.usace.army.mil