NAWQA GIS resources

Ground Water Study Boundaries and GIS Ancillary Data

Ground Water LUS and MAS Boundaries

• Cycle 1 - boundaries of Land Use Studies (LUS) and Subunit Surveys (SUS)
• Cycle 2 - boundaries of Land Use Studies (LUS) and Major Aquifer Studies (MAS) (updated February 2013)
• Cycle 1 and 2 - boundaries from cycle 1 and cycle 2 in geodatabase format (updated May 13, 2013)

Maps of cycle 1 ground water study areas (9.6mb PDF file): The PDF file contains one page size map per network, sorted by study unit. Each map shows BND, TRG if applicable, and wells. Maps were generated at various dates from 2002-2004 so some might not reflect the wells in the current data base. Also, no distinction is made between cycle 1 wells and cycle 2 wells.

Map of NAWQA Major Aquifer Studies (Feb. 2005):

Total areas (square meters) of LUS and MAS ground water studies:
   Metadata || CYC1 Areas || CYC2 Areas (updated Feb 2007)

Field Mapped Land use/Land Cover Characterization for Wells

Spatial data for field mapped land use/land cover within 500-m of the well (geodatabases)

Field mapped land use/land cover percentages (dbf files)

GIS Ancillary Data Calculated using National GIS Data Layers

All data files are tab-delimited text files. The point/buffer files are based on the sites in the NAWQAPT site coverage.

We usually process data for these geographic units: 500-m radius circular buffers around sampling points, ground water study area polygons, and sampling points.

500-m Buffers around Sampling Points

The current data sets (most as of October 2006; a couple are more recent, as of June 2008) are here.

Ground Water Study Areas (LUS and SUS)

The current data sets (as of October 2006) are here.

Sampling Points

All use May 2004 version of NAWQAPT. These are NOT in sync with what's been used to update the well buffer data.

Old GIS Ancillary Data Calculated using National GIS Data Layers

2005 archives.
2003 archives.
Really old data archives.