This data represents the 2002 Integrated Report final assessment results for aquatic life designated uses of non-tidal rivers. The assessments are based on data from the NJDEP Ambient Biomonitoring Network (AMNET) and Monmouth County Health Department AMNET. The health of in-stream benthic macroinvertebrate communities were evaluated using the US Environmental Protection Agency's (USEPA) Rapid Bioassessment Protocol (RBP) 2.
This data spatially represents the aquatic designated use results of rivers based on benthic macroinvertebrate assessments. This coverage depicts spatial extent by associating a single sampling point to a river stretch and applying the assessment results to the waterbody. The methods used for the final results are explained in the NJDEP document, "Integrated Water Quality Monitoring and Assessment Methods." Aquatic Life Designated Use Assessment Methods - Section 5.1 Spatial Extent Assessment Methods - Section 6
In 1992, NJDEP reactivated its Ambient Biomonitoring Network (AMNET). Under the program, sites in each of New Jersey's five Water Regions are sampled for benthic macroinvertebrates on a rotating schedule (once every five years). Since then two rounds of sampling have been completed. Go to http://www.state.nj.us/dep/wmm/sgwqt/wat/integratedlist/integratedlist.htm for more information on the Integrated Report.
publication date
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AMNET site locations based on NJDEP GIS shapefile, NJDEP Ambient Biomonitoring Network for New Jersey (AMNET) 2000 ver 1.0. Waterbody linework based on EPA Reach File Version 3.0 (RF3).
Linework is the USEPA Reach File 3.0 (RF3) hydrographic database. See "Source Information" for details. Assessment results were imported from NJDEP Water Assessment Team's data files of aquatic life assessment results, and included verification check with approximately 50% of the entries.
Checked for any duplicate segments, undershoots, and overshoots.
Blank entries for aquatic life assessment results are unassessed.
RF3 linework +- 35 ft
NA
RF3 used as the basis for linework.
EPA RF3 used as the base linework for the hydrography. The following edits were completed to improve and simplify the linework: a) lakes are represented by only one segment, one shoreline was deleted while the remaining shoreline represents lake as one line; b) canals of cranberry bogs were deleted (these are used for irrigation); c) type of waterbody (river, lake, canal) attribute was extensively edited based on NJDEP lakes, 1985 Land Use/Cover, and 1:24,000 hydrography coverages; d) added stream segments where sampling sites are located using 1:24,000 hydrography coverage; e) connected isolated stream segments if 1:24000 hydrography coverage showed a connection with rivers; and f) corrected river names. The assessment results were imported from the Water Assessment Team's data files and joined with the shapefile using the AMNET Site ID as the common attribute. Some river segments had to be split and new RF3 Reach IDs generated under the following circumstances: a) aquatic life assessment spatial extent ended before the termination node of the river reach (occurred mostly when two sampling sites on same RF3 stream reach); b) tidal area split a river reach; or c) a lake not depicted on the original RF3 coverage was corrected on the linework. Intersected coverage with watershed management area and HUC 11 coverages to identify which watershed management, HUC 11, HUC 8, and region stream segment located. SEE the document "Integrated Water Quality Monitoring and Assessment Methods" for the description of the spatial extent method.
Internal feature number.
ESRI
Feature geometry.
ESRI
RF3 Identification Number - each waterbody segment assigned a unique ID.
USEPA RF3 Hydrography Database
11 Digit Hydrologic Unit Code - identifies the HUC 11 the segment is located.
NJDEP 11 Digit Hydrologic Unit Code delineations for New Jersey (DEPHUC11)
HUC 11 Name
NJDEP 11 Digit Hydrologic Unit Code delineations for New Jersey (DEPHUC11)
Watershed Management Area - identifies the WMA the segment is located.
NJDEP Watershed Management Areas in New Jersey
Watershed Management Area Name
NJDEP Watershed Management Areas in New Jersey
Region Code - identifies the region the segment is located.
NJDEP 11 Digit Hydrologic Unit Code delineations for New Jersey (DEPHUC11)
Region Name
NJDEP 11 Digit Hydrologic Unit Code delineations for New Jersey (DEPHUC11)
8 Digit Hydrologic Unit Code - identifies the HUC 8 the segment is located.
NJDEP 11 Digit Hydrologic Unit Code delineations for New Jersey (DEPHUC11)
River Name - name of river system the segment is located.
USEPA Reach File Version 3.0, NJDEP 1:24,000 hydrography
Tributary Name - name of river, more detailed than River Name
USEPA Reach File Version 3.0, NJDEP 1:24,000 hydrography
Length of River Segment - length in feet
ESRI
Calculated River Segment Length - length converted to miles and based on type of waterbody
ESRI
Lakes are not calculated in total river miles, see Lakes coverage for assessments
NJDEP
Wide Rivers were divided by 2 to prevent double counting of river miles.
NJDEP
Rivers and streams calculated using length of river segment
NJDEP
Type of Waterbody
USEPA Reach File Version 3.0
River, Stream, Coastal Stream, or Isolated Stream
USEPA
Wide River
USEPA
Lake
USEPA
Comments - additional information about assessments or other data
NJDEP
Data Source - name of sampling network the data assessment is based upon.
NJDEP
Station Number
NJDEP
Name of Station
NJDEP
Aquatic Life Assessment Result
NJDEP
Aquatic life designated use fully attains standards
NJDEP
Aquatic life designated use does not attain standards, criteria exceeded
NJDEP
Data is not sufficient to make an assessment
NJDEP
Evaluation Method
NJDEP
assessment directly based on sampling station results
NJDEP
assessment extrapolted from monitored waters
NJDEP
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