Central Office

Ohio Department of Natural Resources
Division of Geological Survey
2045 Morse Rd., Bldg. C1
Columbus, OH 43229-6693 

Telephone: (614) 265-6576
FAX: (614) 447-1918
E-mail: geo.survey@dnr.state.oh.us

Office Hours [50 KB PDF]

Location Map

Horace R. Collins Laboratory

3307 South Old State Road
Delaware, OH 43015

Telephone: (740) 548-7348
E-mail: geo.survey@dnr.state.oh.us

Location Map