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Person

Steven M Peterson

Center Director
Upper Midwest Water Science Center

Email: speterson@usgs.gov
Office Phone: 763-314-1929
ORCID: 0000-0002-9130-1284

Location
Mounds View Business Center
2280 Woodale Drive
Mounds View , MN 55112-4900
US

Supervisor: Jennifer A Lacey
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The National Hydrogeologic Grid (NHG) dataset includes a raster and vector representation of 1-km cells defining a uniform grid that encompasses the continental United States. The value of each cell of the raster dataset corresponds to the 1-km cell number defined as 'cellnum' in the attributes of the vector data. The NHG consists of 4,000 rows and 4,980 columns, numbered from the top left corner of the grid, to correspond to the traditional row and column numbering system of the MODFLOW groundwater-flow simulation code (Hughes and others, 2017; Langevin and others, 2017). The Albers projection was chosen for the NHG because of the capability to best preserve area, which is crucial in the computation of volume for...
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