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Abstract
Automated Conflation of Reach Data for the National Hydrography Dataset
Track: Database Design, Automation, and Management
Author(s): Lawrence Stanislawski, Carl Nelson, Martin Hamann
When the features in an address-geocoded database are being spatially upgraded, conflation, or the process of transferring information associated with one digital representation to another representation of the same features, is essential for maintaining links to related databases. During recent months, an improved spatial representation of the National Hydrography Dataset (NHD) has been under development. The new dataset is being developed from vector data collected at a higher resolution than the existing 1:100,000-scale NHD. Each section, or reach, of surface drainage on the NHD is assigned a unique address known as a reach code. This paper describes automated approaches being used by the USGS to conflate areal and linear reach codes to the higher resolution dataset.
Lawrence Stanislawski
Science Applications International Corporation/United States Geological Survey
Production Operations
1400 Independence Road
MS 700
Rolla , MO 65401
USA
Phone: (573) 308-3914
Fax: (573) 308-3652
E-mail: lstan@usgs.gov
Carl Nelson
USGS
Production Operations
1400 Independence Road
MS 700
Rolla 65401
USA
Phone: (573) 308-3838
Fax: (573) 308-3652
Martin Hamann
SAIC
2224 Sarno Road
Melbourne , 32935
USA
Phone: (321) 751-3272