The Digital Elevation Model of Indiana - Revised CD-ROM contains a 30-meter DEM based on the U.S. Geological Survey's National Elevation Dataset (NED) for Indiana and the surrounding states. IGS reconstruction has modified much of the original data set. An explanation of the process used to make new DEMs and images of the final grid are included on the CD-ROM.
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Indiana Geological and Water Survey
611 North Walnut Grove
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IGS Return Policy
All sales are final. Materials may not be returned after they have been accepted by the customer. Any discrepencies in mail orders must be reported to IGWS within 10 days of receipt of order.
The Indiana Geological and Water Survey will refund the purchase price and sales tax of products if returned with the original sales receipt within 10 days of receipt of order. Refunds will be issued with the same method of payment as indicated on the original receipt except for cash purchases, which will be refunded by check. Items must be returned in the same condition as purchased. Refunds on digital products and services are not allowed, except for defective media such as CD-ROMs, flash drives, and so on. The customer is responsible for paying shipping costs to return items.