Identification_Information: Citation: Citation_Information: Originator: Hitt, K.J. Publication_Date: 20010326 Title: Boundaries of the land use study and study unit survey ground-water studies conducted by the 1991 National Water-Quality Assessment (NAWQA) study units Edition: 2 Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Reston, Virginia, USA Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: This is a set of digital maps of the boundaries of land use studies (LUS) and study unit surveys (subunit surveys, SUS), conducted by the 1991 National Water-Quality Assessment (NAWQA) study units. These coverages describe the sampling areas of the land use studies and study unit surveys, which represent two of the three ground-water study components of the National Water-Quality Assessment program. (The third ground-water component is the flow path studies). Purpose: The purpose of this data set is to describe the hydrogeologic units and predominant land uses that the NAWQA study units used for selecting wells for their sampling networks. There are several types of boundaries: 1) the polygon coverage that delineates the entire areal extent of the hydrogeologic unit defined for study in the study unit survey and/or land use study, i.e., the ground-water network study boundary. This boundary includes the full range of land uses, not only the targeted land use. For example, for both a study unit survey and for an agricultural land use study in the Piedmont Carbonate area, the polygon would represent the entire Piedmont Carbonate area, the boundary of the overall area considered. The coverage naming convention is netcode_bnd, for example, LUSCR1_BND. In some cases one network polygon coverage was used for several targeted land uses or overall study areas so duplicate coverages exist. (See tables 1 and 2 under Supplemental_Information.) 2) the polygon coverage that delineates the targeted land use within the overall area described in #1. This was supplied by the study units if they used a "local" improved source of land use data to delineate the land uses instead of using GIRAS Anderson Level II categories (updated with 1990 population; see ). For example, if the targeted areas are irrigated agriculture, the study unit would supply the coverage. Otherwise, National Synthesis was supposed to be able to derive the targeted land uses from GIRAS data. The coverage naming convention is netcode_trg, for example, LUSCR_TRG. 3) the polygon coverage of "local" improved land use data, if available, for the study unit. Following the example in #2, this would be the "non-GIRAS" improved land use data for all categories of land use, not only irrigated/non-irrigated land. The coverage naming convention is ____.ilu. (For San Joaquin, the coverage for almonds and vineyards is called LUS_ILU because the geographic extent is the land use study. For Upper Snake, the coverage is called USNK_ILU; the geographic extent is the Upper Snake study unit in Idaho.) As noted above, in some cases for BND and TRG coverages, the same boundary describes more than one NETCODE and so we have multiple copies of the same coverage. The data set version dated 3/36/2001 is a update of the data set dated 11/04/1997. In the 2001 version, the coverage names are consistent with updated sucodes and one coverage exists for each netcode. So, one boundary can describe more than one study, and that boundary is copied to the various coverages. (See processing step for 3/26/2001.) Limitations_of_Data: One of the limitations of the data set is that the maps came from 20 NAWQA study units, who compiled them from various source materials at various scales. Although we tried to make them as consistent as possible, the coverages are not uniform. Also, the quality of the on-line coverage documentation (INFO files covername.nar, covername.ref, covername.att, covername.doc) varies. Many of the study units did not explain how the coverages were used in selecting the wells. Users should plan to check other sources of information such as the study unit design plans, ground-water study description indexes available at , and so forth. Another limitation is that some of the sampling sites fall outside of the ground-water study area as defined by the GIS coverage boundaries. Often this resulted from differences in scale of the maps used to locate the wells in the field from the GIS coverages used to derive the boundaries. At any rate, the wells are sampling the correct aquifers. A third limitation is that many of the study units did not supply coverages of targeted land use. Supplemental_Information: Procedures_Used: The NAWQA study units submitted these coverages in response to the data aggregation request issued by the National Synthesis teams in fall 1996 for boundaries of land use studies and study unit surveys. The guidelines are available on the Internet at . Reviews_Applied_to_Data: The NAWQA National Synthesis ground water teams reviewed the coverages during summer 1997 and issued a ground-water GIS data verification request in August 1997, which is available on the Internet at . The NAWQA study units responded to the questions raised in the memo. At that time, in response to the memo, the study units modified existing coverages and submitted new coverages. Related_Spatial_and_Tabular_Data_Sets: When using the coverages, consult the list of network codes and network descriptions used by National Synthesis, which is available from Curtis Price. A coverage should exist for each SUCODE on the list that is not an "aggregate" or a "subset." Here is the original list of each sucode used by National Synthesis and the corresponding LUS coverage name. To keep pace with updated sucodes, the coverage names were changed in 2001. See processing steps for 3/26/2001. Table 1. List of Land Use Study SUCODEs and corresponding coverage names. (Append "_bnd" to each BND coverage name. Append "_trg" to each TRG coverage name.) Do not use as of 3/26/2001. !----------------------------------------------------------- ! LUS NAME OF NAME OF ! SUCODE BND COVERAGE TRG COVERAGE, if available !----------------------------------------------------------- !acfblusag1 lusag1 To be derived from GIRAS !acfbluscr1 luscr1 To be derived from GIRAS !acfbluscr2 luscr2 To be derived from GIRAS !acfblusfo1 lusag1 None !acfblusur1 lusur To be derived from GIRAS !acfblusur2 lusur To be derived from GIRAS !albelus1 lus1 !albelus2 lus2 (=lus1) !albelusur lusur !ccptlusag1a lusag1 lusag1 !ccptlusag1b lusag1 lusag1 !ccptlusag2 lusag2 lusag2 !ccptlusor1 lusag2 lusor1 !connlusag lus lusag !connlusfo lus lusfo !connlusur lus lusur !gaflluscr luscr To be derived from GIRAS !gafllusur3a lusur3 lusur3 !gafllusur3b lusur3 lusur3 !hdsnlusag1 lus lusag !hdsnlusag2 lus lusag !hdsnlusur lus lusur !lsuslus1 lus1 lus1 !lsuslus2 lus2 lus2 !lsuslus3 lus3 lus3 !lsuslus4 lus3 lus4 !nvbrlusag1 lusag1 !nvbrlusag2 lusag2 !nvbrlusur1 lusur1 !nvbrlusur2 lusur2 !ozrklusag1a sus2b lusag1 !ozrklusag1b sus2b lusag1 !ozrklusag2a sus2b lusag2 !ozrklusag2b sus2b lusag2 !potolusag1 lusag1 lusag1 !potolusag2 lusag2 lusag2 !potolusfo lusag1 None !potolusfo1 lusag1 None !rednlus1 lus1 !rednlus2 lus2 !riogluscr luscr luscr (sprinkler) !rioglusag lusag !rioglusur lusur !sanjlus41 sus1 lus41 !sanjlus42 sus1 lus41 !sanjlus51 sus1 lus51 !sanjlus52 sus1 lus51 !sanjlus61 sus1 lus61 !sanjlus62 sus1 lus61 !spltluscr luscr To be derived from GIRAS !spltlusur lusur To be derived from GIRAS !trinlusur1 lusur !trinlusur2 lusur !trinlusur3 lusur !usnkluscr1 luscr1 luscr1 !usnkluscr2 luscr2 luscr2 !usnkluscr3 luscr3 luscr3 !usnkluscr4 luscr4 luscr4 !whitlus1 lus1 lus1 !whitlus2 lus2 lus2 !whitlus3 lus3 lus3 !whitlus3d lus3 lus3 !whitlus4 lus3 lus4 !whitlus4d lus3 lus4 !willlus1 sus lus1 !willlus2 sus lus2 !willlusur sus lusur !wmiclusag11 lusag1 To be derived from GIRAS !wmiclusag12 lusag1 To be derived from GIRAS !wmiclusag21 lusag2 To be derived from GIRAS Here is the original list of each sucode used by National Synthesis and the corresponding SUS coverage name. These also have been updated to reflect more current SUCODEs. See processing step for 3/26/2001. Table 2. List of Study Unit Survey SUCODEs and corresponding coverage names. (Append "_bnd" to each coverage name.) Do not use as of 3/26/2001. !------------------------- ! SUS NAME OF ! SUCODE BND COVERAGE !------------------------- !acfbsus1 sus !acfbsus2 sus !albesus1 sus1 !albesus2 sus2 !albesus4 sus4 !albesus5 sus5 !albesus6 sus6 !ccptsus1d sus1d !cnbrsus1 sus1 !cnbrsus2 sus1 !connsus1 sus1 !gaflsus sus !hdsnsus1 sus !hdsnsus2 sus !lsussus1 sus1 !lsussus2 sus2 !nvbrsus1 lusur1 !nvbrsus2 lusur2 !nvbrsus3 lusag1 !ozrksus1 sus1 !ozrksus2a1 sus2a !ozrksus2a2 sus2a !ozrksus2b1 sus2b !ozrksus2b2 sus2b !potosus1 sus1 !potosus2 sus2 !rednsus1 sus1 !rednsus2 sus2 !rednsus3 sus3 !rednsus4 sus4 !rednsus5 sus5 !riogsus sus !sanjsus1 sus1 !spltsus1 sus1 !trinsus1 sus1 !trinsus2 sus2 !trinsus3 sus3 !usnksus1 sus1 !usnksus2 sus2 !usnksus3 sus3 !willsus sus !wmicsus1 sus1 ! Excluding CNBRSUS2, which was added in Sept 1998, the ground-water sampling sites (wells, springs, and other sites) are available in a separate point coverage that was derived from the network tables in the National Synthesis data base . Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19901001 Beginning_Time: Unknown Ending_Date: 19971025 Ending_Time: Unknown Currentness_Reference: Current as of publication date. Status: Progress: Complete Maintenance_and_Update_Frequency: As needed. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -127.00 East_Bounding_Coordinate: -65.00 North_Bounding_Coordinate: 50.00 South_Bounding_Coordinate: 22.00 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: National Water-Quality Assessment (NAWQA) Program ground water study boundaries land use study study unit survey subunit survey LUS SUS Place: Place_Keyword_Thesaurus: None Place_Keyword: Conterminous United States Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: None Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: None Access_Constraints: For internal USGS use only. Use_Constraints: For internal USGS use only. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie J. Hitt Contact_Organization: U.S. Geological Survey, Water Resources Division Contact_Address: Address_Type: mailing address Address: 12201 Sunrise Valley Drive, MS-413 City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6854 Contact_Facsimile_Telephone: 703-648-6693 Contact_Electronic_Mail_Address: kjhitt@usgs.gov Hours_of_Service: 9:00am-5:30pm EST Contact_Instructions: Please contact thru email Native_Data_Set_Environment: dgux, 5.4R3.10, AViiON UNIX, ARC/INFO version 7.0.4 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: See Entity_Attribute_Information Quantitative_Attribute_Accuracy_Assessment: Attribute_Accuracy_Value: See Explanation Attribute_Accuracy_Explanation: Where present, is described with each attribute defined in the Entity and Attribute Section. Logical_Consistency_Report: Polygon and chain-node topology present. Completeness_Report: See supplemental information. Lineage: Process_Step: Process_Description: Version 1. Process_Date: 19970630 Process_Step: Process_Description: Version 2. Process_Date: 19971021 Process_Step: Process_Description: Updated metadata to reflect that CNBRSUS2 has the same boundary as CNBRSUS1. Process_Date: 19981007 Process_Step: Process_Description: Coverages projected to NAD 83. Process_Date: 20000315 Process_Step: Process_Description: Changed coverage names so that they match updated sucodes, one coverage for each SUCODE. Repackaged the whole set, as below. ! NEW NEW ! SUCODE BND COV OLD BND COV TRG COV OLD TRG COV ! acfblusag1 lusag1_bnd lusag1_bnd ! acfbluscr1 luscr1_bnd luscr1_bnd ! acfbluscr2 luscr2_bnd luscr2_bnd ! acfblusfo1 lusfo1_bnd lusag1_bnd ! acfblusur1 lusur1_bnd lusur_bnd ! acfblusur2 lusur2_bnd lusur_bnd ! acfbsus1 sus1_bnd sus_bnd ! acfbsus2 sus2_bnd sus_bnd ! albelusag1 lusag1_bnd lus1_bnd ! albelusag2 lusag2_bnd lus2_bnd ! albelusur1 lusur1_bnd lusur ! albesus1 sus1_bnd sus1_bnd ! albesus2 sus2_bnd sus2_bnd ! albesus4 sus4_bnd sus4_bnd ! albesus5 sus5_bnd sus5_bnd ! albesus6 sus6_bnd sus6_bnd ! ccptlusag1a lusag1a_bnd lusag1_bnd lusag1a_trg lusag1_trg ! ccptlusag1b lusag1b_bnd lusag1_bnd lusag1b_trg lusag1_trg ! ccptlusag2 lusag2a_bnd lusag2_bnd lusag2a_trg lusag2_trg ! ccptlusag2 lusag2b_bnd lusag2_bnd lusag2b_trg lusag2_trg ! ccptlusor1 lusor1a_bnd lusag2_bnd lusor1a_trg lusor1_trg ! ccptlusor1 lusor1b_bnd lusag2_bnd lusor1b_trg lusor1_trg ! ccptsus1a sus1a_bnd sus1d_bnd ! ccptsus1b sus1b_bnd sus1d_bnd ! ccptsus1d sus1d_bnd ! cnbrsus1 sus1_bnd sus1_bnd ! cnbrsus2 sus2_bnd sus1_bnd ! connlusag1 lusag1_bnd lus_bnd lusag1_trg lusag_trg ! connlusfo1 lusfo1_bnd lus_bnd lusfo1_trg lusfo_trg ! connlusur1 lusur1_bnd lus_bnd lusur1_trg lusur_trg ! connsus1 sus1_bnd sus1_bnd ! gaflluscr1 luscr1_bnd luscr_bnd ! gafllusur3a lusur3a_bnd lusur3_bnd lusur3a_trg lusur3_trg ! gafllusur3b lusur3b_bnd lusur3_bnd lusur3b_trg lusur3_trg ! gaflsus1 sus1_bnd sus_bnd ! hdsnlusag1 lusag1_bnd lus_bnd lusag1_trg lusag_trg ! hdsnlusag2 lusag2_bnd lus_bnd lusag2_trg lusag_trg ! hdsnlusur1 lusur1_bnd lus_bnd lusur1_trg lusur_trg ! hdsnsus1 sus1_bnd sus_bnd ! hdsnsus2 sus2_bnd sus_bnd ! lsuslusag1 lusag1_bnd lus1_bnd lusag1_trg lus1_trg ! lsuslusag2 lusag2_bnd lus2_bnd lusag2_trg lus2_trg ! lsuslusag3 lusag3_bnd lus3_bnd lusag3_trg lus3_trg ! lsuslusur1 lusur1_bnd lus3_bnd lusur1_trg lus4_trg ! lsussus1 sus1_bnd sus1_bnd ! lsussus2 sus2_bnd sus2_bnd ! nvbrlusag1 lusag1_bnd lusag1_bnd ! nvbrlusag2 lusag2_bnd lusag2_bnd ! nvbrlusur1 lusur1_bnd lusur1_bnd ! nvbrlusur2 lusur2_bnd lusur2_bnd ! nvbrsus1 sus1_bnd lusur1_bnd ! nvbrsus2 sus2_bnd lusur2_bnd ! nvbrsus3 sus3_bnd lusag1_bnd ! ozrklusag1a lusag1a_bnd sus2b_bnd lusag1a_trg lusag1_trg ! ozrklusag1b lusag1b_bnd sus2b_bnd lusag1b_trg lusag1_trg ! ozrklusag2a lusag2a_bnd sus2b_bnd lusag2a_trg lusag2_trg ! ozrklusag2b lusag2b_bnd sus2b_bnd lusag2b_trg lusag2_trg ! ozrksus1 sus1_bnd sus1_bnd ! ozrksus2a sus2a_bnd sus2a_bnd ! ozrksus2b sus2b_bnd sus2a_bnd ! ozrksus3a sus3a_bnd sus2b_bnd ! ozrksus3b sus3b_bnd sus2b_bnd ! potolusag1 lusag1_bnd lusag1_bnd lusag1_trg lusag1_trg ! potolusag2 lusag2_bnd lusag2_bnd lusag2_trg lusag2_trg ! potolusfo lusag1_bnd ! potolusfo1 lusfo1_bnd lusag1_bnd lusfo1_trg ! potosus1 sus1_bnd sus1_bnd ! potosus2 sus2_bnd sus2_bnd ! rednlusag1 lusag1_bnd lus1_bnd ! rednlusag2 lusag2_bnd lus2_bnd ! rednsus1 sus1_bnd sus1_bnd ! rednsus2 sus2_bnd sus2_bnd ! rednsus3 sus3_bnd sus3_bnd ! rednsus4 dropped sus4_bnd ! rednsus4 sus4_bnd sus5_bnd ! rioglusag1 lusag1_bnd lusag_bnd ! riogluscr1 luscr1_bnd luscr_bnd luscr1_trg luscr_trg ! rioglusur1 lusur1_bnd lusur_bnd ! riogsus1 sus1_bnd sus_bnd ! sanjluscr1a luscr1a_bnd sus1_bnd luscr1a_trg lus61_trg ! sanjluscr1b luscr1b_bnd sus1_bnd luscr1b_trg lus61_trg ! sanjlusor1a lusor1a_bnd sus1_bnd lusor1a_trg lus41_trg ! sanjlusor1b lusor1b_bnd sus1_bnd lusor1b_trg lus41_trg ! sanjlusor2a lusor2a_bnd sus1_bnd lusor2a_trg lus51_trg ! sanjlusor2b lusor2b_bnd sus1_bnd lusor2b_trg lus51_trg ! sanjsus1 sus1_bnd sus1_bnd ! spltluscr1 luscr1_bnd luscr_bnd ! spltlusur1 lusur1_bnd lusur_bnd ! spltsus1 sus1_bnd sus1_bnd ! trinlusur1 lusur1_bnd lusur_bnd ! trinlusur2 lusur2_bnd lusur_bnd ! trinlusur3 lusur3_bnd lusur_bnd ! trinsus1 sus1_bnd sus1_bnd ! trinsus2 sus2_bnd sus2_bnd ! trinsus3 sus3_bnd sus3_bnd ! usnkluscr1 luscr1_bnd luscr1_bnd luscr1_trg luscr1_trg ! usnkluscr2 luscr2_bnd luscr2_bnd luscr2_trg luscr2_trg ! usnkluscr3 luscr3_bnd luscr3_bnd luscr3_trg luscr3_trg ! usnkluscr4 luscr4_bnd luscr4_bnd luscr4_trg luscr4_trg ! usnksus1 sus1_bnd sus1_bnd ! usnksus2 sus2_bnd sus2_bnd ! usnksus3 sus3_bnd sus3_bnd ! whitluscr1 luscr1_bnd lus1_bnd luscr1_trg lus1_trg ! whitluscr2 luscr2_bnd lus2_bnd luscr2_trg lus2_trg ! whitluscr3a luscr3a_bnd lus3_bnd luscr3a_trg lus3_trg ! whitluscr3b luscr3b_bnd lus3_bnd luscr3b_trg lus3_trg ! whitlusur1a lusur1a_bnd lus3_bnd lusur1a_trg lus4_trg ! whitlusur1b lusur1b_bnd lus3_bnd lusur1b_trg lus4_trg ! willlusag1 lusag1_bnd sus_bnd lusag1_trg lus1_trg ! willlusag2 lusag2_bnd sus_bnd lusag2_trg lus2_trg ! willlusur1 lusur1_bnd sus_bnd lusur1_trg lusur_trg ! willsus1 sus1_bnd sus_bnd ! wmiclusag1a lusag1a_bnd lusag1_bnd ! wmiclusag1b lusag1b_bnd lusag1_bnd ! wmiclusag2 lusag2_bnd lusag2_bnd ! wmicsus1 sus1_bnd sus1_bnd Process_Date: 20010326 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Albers Conical Equal Area Albers_Conical_Equal_Area: Standard_Parallel: 29.5 Standard_Parallel: 45.5 Longitude_of_Central_Meridian: -96 Latitude_of_Projection_Origin: 23 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1.0 Ordinate_Resolution: 1.0 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: COVERAGE.PAT Entity_Type_Definition: Polygon Attribute Table Entity_Type_Definition_Source: GIS software Attribute: Attribute_Label: AREA Attribute_Definition: Area of polygon in square coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: n/a Enumerated_Domain_Value_Definition_Source: n/a Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of polygon in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition: n/a Enumerated_Domain_Value_Definition_Source: n/a Attribute: Attribute_Label: COVER# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition: n/a Enumerated_Domain_Value_Definition_Source: n/a Attribute: Attribute_Label: COVER-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition: n/a Enumerated_Domain_Value_Definition_Source: n/a Attribute: Attribute_Label: SUCODE Attribute_Definition: NAWQA network code Attribute_Definition_Source: NAWQA study unit abbrev + network code Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: alphabetic Enumerated_Domain_Value_Definition: n/a Enumerated_Domain_Value_Definition_Source: n/a Overview_Description: Entity_and_Attribute_Overview: The general structure of each boundary coverage is: !COVER# !COVER-ID !SUCODE SUCODE is the combination of the 4-letter abbreviation for the NAWQA study unit plus the ground-water study network code (NETCODE). In some cases, the same boundary is used for more than one NETCODE and the boundary is copied to more than one coverage. Any fields besides SUCODE usually are ignored. When using the coverages, any interior polygon that has a blank SUCODE is considered to be outside of the ground-water study area. When analyzing data using the coverages, EXCLUDE the polygons that have a blank value for SUCODE. The 1991 NAWQA study unit names and the 4-letter abbreviations are: !ACFB = APALACHICOLA-CHATTAHOOCHEE-FLINT R BASIN !ALBE = ALBEMARLE-PAMLICO DRAINAGE !CCPT = CENTRAL COLUMBIA PLATEAU !CNBR = CENTRAL NEBRASKA BASINS !CONN = CONNECTICUT,HOUSATONIC,THAMES R BASINS !GAFL = GEORGIA-FLORIDA COASTAL PLAIN !HDSN = HUDSON RIVER BASIN !LSUS = LOWER SUSQUEHANNA RIVER BASIN !NVBR = NEVADA BASIN AND RANGE !OZRK = OZARK PLATEAUS !POTO = POTOMAC RIVER BASIN !REDN = RED RIVER OF NORTH BASIN !RIOG = RIO GRANDE VALLEY !SANJ = SAN JOAQUIN-TULARE BASINS !SPLT = SOUTH PLATTE BASIN !TRIN = TRINITY RIVER BASIN !USNK = UPPER SNAKE RIVER BASIN !WHIT = WHITE RIVER BASIN !WILL = WILLAMETTE BASIN !WMIC = WESTERN LAKE MICHIGAN DRAINAGE ! The following list of standard ground-water netcodes is from the NAWQA data dictionary, : !lusag = ground-water land-use study of agricultural area !luscr = ground-water land-use study of cropland area !lusfo = ground-water land-use study of forested area !lusor = ground-water land-use study of orchard or vineyard area !lusur = ground-water land-use study of urban area !sus = ground-water subunit survey Entity_and_Attribute_Detail_Citation: NAWQA data dictionary . Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: Mailing address Address: 12201 Sunrise Valley Drive, MS 413 City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703 648-6854 Contact_Electronic_Mail_Address: kjhitt@usgs.gov Contact_Instructions: Please use email. Distribution_Liability: None. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARC/INFO Format_Information_Content: Archived directories of ARC/INFO coverages. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Access_Instructions: The files are available in anonymous ftp/pub/kjh/gwgis91/91gwpolys.tar.gz on hqwiftp.er.usgs.gov. The main directory is called 91gwpolys. Within that directory are 20 study unit subdirectories that contain the coverages for each study unit. In each study unit subdirectory, the coverages names are constructed as NETCODE_BND and NETCODE_TRG. The metadata is in INFO files under the old DOCUMENT structure (covername.nar, covername.doc, covername.ref, covername.att). Fees: None Metadata_Reference_Information: Metadata_Date: 20010326 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie J. Hitt Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 12201 Sunrise Valley Drive, MS-413 City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Voice_Telephone: 703-648-6854 Contact_Facsimile_Telephone: 703-648-6693 Contact_Electronic_Mail_Address: kjhitt@usgs.gov Hours_of_Service: 9:00am-5:30pm EST Contact_Instructions: Please contact thru email Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: Local Time Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None