                                DATA DICTIONARY
                                ***************

COVERAGE NAME:  {county}strm

DATA DESCRIPTION:  Hydrography line (network) coverages for NJ counties.

KEYWORDS:  hydrography, rivers, streams, drainage


                                   CONTACTS
                                   ********

AGENCY:  BGSA
NAME:    Lou Jacoby
ADDRESS: CN 428
         Trenton, NJ   086250428
PHONE:   633-1203


                            MANUSCRIPT MAP INFORMATION
                            **************************

BASEMAP:     USGS Topoquads             COORDINATE SYSTEM:  NJ State Plane Feet
MAP DATE:    Various                    DATUM:              NAD27 
SCALE:       24000                      MAP ACCURACY:       Complies with NMAS
PROJECTION:  Polyconic                  GEOGRAPHIC AREA:    County
MAP MEDIA:   Mylar                      FEATURE TYPE:       Line

MAPPING METHODOLOGY AND MAPPING SOURCES:
   Original map source is the USGS 1:24,000 hydrography digital line graph (DLG)
   files.  Line work was updated using the 1986 orthophoto quads.  Several quad
   coverages had to be generated in-house (from orthophotos) including:
   Marmora, New Gretna, Oceanville, Tuckerton, and Point Pleasant.  These in-house
   generated quads display less detail in the coastal areas.

MAPPING CRITERIA:
   The hydrography layer (composed of the waterbody polygon coverage and the
   stream network line coverage) was initially generated by major drainage basin.
   The county coverages were clipped from the drainage basin coverages.

MAPPING ACCURACY AND DATA LIMITATIONS:
   Basemap (photoquad) feature positions are good to about +/- 60 feet or better.
   Delineated lines are generally good to about +/- 50 feet from locations on
   manuscript.  Coastline data was integrated from NJDEPE 1986 Coast coverage.


                                MAP AUTOMATION
                                **************

AUTOMATION DATE:  1988-1993              COORDINATE SYSTEM:  NJ State Plane Feet
                                         DATUM:  NAD27 (Projected to NAD83)

AUTOMATION METHODS:  USGS DLG file, and manual digitizing
PRODUCTION STAFF:    NJDEP, ESRI - Redlands, CA
AUTOMATION STATUS:   Linework complete, additional database items may be added
DATA AVAILABILITY:   ARC/INFO Export (DOS) on CD

CARTOGRAPHIC QUALITY:
   Data has been systematically plotted on mylar and checked to basemap.
   Nodeerrors, labelerrors and slivers resolved.  Features are within +/- 80
   feet or better from locations on the 1986 photoquads.

DISTRIBUTION RESTRICTIONS:
   Requires Data Distribution Agreement.


                                MAP ATTRIBUTES
                                **************

DATABASE:  Info

 ITEM NAME                   DESCRIPTION
 ---------                   -----------
NAME                     -   Stream name (Note UNT TO designates an un-named triburary to a
                             corresponding stream number at a specific river mile).
MODULE                   -   USGS quad number (1-178)
ORDER                    -   Stream order.  Tributaries converge to produce higher order.
LEVEL                    -   USNS stream level:  See explanation of Universal Stream
                             Numbering System (USNS) under NUMBER. 
NUMBER                   -   USNS stream number: 5 digit stream index number.  Numbering
                             system begins at the mouth of a major stream (example: Delaware
                             River is 57000 and level 1).  The first tributary entering the 
                             Delaware (moving up-stream) is given the next highest stream
                             number (usually incremented by 8, example:  Pond Creek is 
                             57008, level 2, direction 20).  If there are level 3 tributaries
                             that enter the level 2, the first is given the next stream number.
                             If there are any level 4 tributaries that enter the level 3, the
                             first is given the next stream number.
DIRECTION                -   USNS stream direction:  Odd tens digit means tributary enters
                             lower level stream from the left (as you head up-stream), even
                             tens digit from the right.  In cases where the units digit is not
                             zero, the units digit superceeds the tens digit.
PERIODICITY              -   Perennial (1) or intermittent (2) classification from USGS
                             DLG file.  Classification is not consistent throughout the
                             quad series for NJ.
SITUATION                -   Stream situation:  normal single line stream trace (1), or
                             center-line (2) through a waterbody.
REACH                    -   EPA River Reach (version I) number.  Item is redefined to REGION, 
                             SUB REGION, ACCOUNTING UNIT, CATALOGING UNIT, AND UNIQUE number.
HUC11                    -   Hydrologic Unit Code (from basins -> huc11 coverage) to which the 
                             stream belongs.

LOOKUP AND/OR RELATED DATA FILES:
   No lookup or relate data files.

ATTRIBUTE QUALITY:
   Frequencies run to check for valid attributes.  Visual inspection of proof
   plots.
