<!DOCTYPE METADATA PUBLIC "-//FGDC//DTD METADATA 2.0//EN">
<metadata>
<idinfo>
<citation>
<citeinfo>
<origin>GRANIT, Earth Systems Research Center, University of New Hampshire</origin>
<pubdate>20191001</pubdate>
<title>Two Foot Topographic Contours - Fall River-Connecticut River (0108020105) - filtered</title>
<geoform>vector digital data</geoform>
<pubinfo>
<pubplace>Durham, New Hampshire</pubplace>
<publish>GRANIT, Earth Systems Research Center, University of New Hampshire</publish>
</pubinfo>
<othercit>None</othercit>
<onlink>&lt;URL:http://www.granit.unh.edu/cgi-bin/nhsearch?dset=contours_2ft/Contour_2ft_0108020105_filter&gt;</onlink>
</citeinfo>
</citation>
<descript>
<abstract>
This data set represents filtered, 2-foot bare earth contours (isolines) for the Fall River-Connecticut River (0108020105) HUC 10 unit. It was derived from a
data set which was compiled from LIDAR collections in NH available as of spring, 2019.  The raster was filtered using the ArcGIS FOCAL STATISTICS
tool with a 3x3 circular neighborhood. The contours were generated using the ArcGIS CONTOUR tool while applying a Z factor of
3.2802 to convert the elevation values from meters to feet. The data include an INDEX field with values of 10 and 100 to flag 10 and 100-foot contours.
Note on HUC 01060000310:
Due to limitations in the source LIDAR data, some anomalies exist in the generated contours in coastal areas of the state.
These were left in the data so that users can determine what further processing best meets their application needs.
</abstract>
<purpose>
These contours connect points of equal elevation at 2-foot intervals, and are one of a suite of topographic datasets available from
NH GRANIT that convey the shape of the Earth&apos;s surface.
</purpose>
<supplinf>
Two companion data sets representing (1) smoothed versions of the filtered contours (Two Foot Topographic Contours - Fall River-Connecticut River (0108020105) - smoothed,
recommended for cartographic purposes only) and (2) shapefile showing the extents of source LiDAR-derived DEM data (Two Foot Topographic Contours -
LiDAR Source) are also available from GRANIT.
</supplinf>
</descript>
<timeperd>
<timeinfo>
<rngdates>
<begdate>20110506</begdate>
<enddate>20180524</enddate>
</rngdates>
</timeinfo>
<current>None</current>
</timeperd>
<status>
<progress>Complete</progress>
<update>None planned</update>
</status>
<spdom>
<bounding>
<westbc>-72.5178040944</westbc>
<eastbc>-72.3811595566</eastbc>
<northbc>42.7844702906</northbc>
<southbc>42.7221924049</southbc>
</bounding>
</spdom>
<keywords>
<theme>
<themekt>ISO 19115 Topic Categories</themekt>
<themekey>elevation</themekey>
</theme>
<theme>
<themekt>None</themekt>
<themekey>contours</themekey>
<themekey>hypsography</themekey>
<themekey>LiDAR</themekey>
<themekey>Fall River-Connecticut River</themekey>
</theme>
<place>
<placekt>None</placekt>
<placekey>United States</placekey>
<placekey>Northeast</placekey>
<placekey>New England</placekey>
<placekey>New Hampshire</placekey>
<placekey>Fall River-Connecticut River</placekey>
<placekey>HUC 10 0108020105</placekey>
</place>
</keywords>
<accconst>None</accconst>
<useconst>Please cite NH GRANIT.</useconst>
<ptcontac>
<cntinfo>
<cntorgp>
<cntorg>GRANIT, Earth Systems Research Center</cntorg>
<cntper>GRANIT Database Manager</cntper>
</cntorgp>
<cntpos>Database Manager</cntpos>
<cntaddr>
<addrtype>mailing and physical address</addrtype>
<address>Morse Hall, University of New Hampshire</address>
<city>Durham</city>
<state>NH</state>
<postal>03824</postal>
<country>US</country>
</cntaddr>
<cntvoice>603-862-1792</cntvoice>
<cntfax>603-862-0188</cntfax>
<cntemail>granit@unh.edu</cntemail>
<hours>8:30AM-5PM, EST</hours>
</cntinfo>
</ptcontac>
<datacred>NH GRANIT</datacred>
<native>Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.6.1; Esri ArcGIS Pro 2.3.3</native>
</idinfo>
<dataqual>
<attracc>
<attraccr>
The critical attribute of this data is the contour elevation, the absolute accuracy of which has been affected by a number of
processing steps. The original LiDAR elevation source DEMs had a 0.7 - 2 meter or better nominal post spacing (GSD) and a bare
earth vertical accuracy of 7 - 18 centimeters RMSEz. Prior to contouring, the input raster was FILTERED using a 3x3
circular neighborhood. The original elevation units of meters were converted to feet using a factor of 3.2808.
</attraccr>
<qattracc>
<attraccv>Floating point</attraccv>
<attracce>None</attracce>
</qattracc>
</attracc>
<logic>Polyline topology was used to ensure that contours do not intersect or overlap.</logic>
<complete>Data are complete for the State of New Hampshire, and reflect the content of the source datasets.</complete>
<lineage>
<srcinfo>
<srccite>
<citeinfo>
<origin>GRANIT, Earth Systems Research Center, University of New Hampshire</origin>
<pubdate>200601</pubdate>
<title>New Hampshire Hydrography Dataset</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>1956</begdate>
<enddate>2005</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>HUC_10</srccitea>
<srccontr>NHD HUC 10 watershed delineations</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Photo Science, Inc.</origin>
<pubdate>2011</pubdate>
<title>Coastal New Hampshire 2011 LiDAR collection</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>20110506</begdate>
<enddate>20110630</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>Coastal_LiDAR_DEM</srccitea>
<srccontr>Input LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Quantum Spatial, Inc.</origin>
<pubdate>2016</pubdate>
<title>USGS Connecticut River NH State Plane LiDAR</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>20151024</begdate>
<enddate>20160429</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>Connecticut_LiDAR_DEM</srccitea>
<srccontr>Input LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Woolpert, Inc.</origin>
<pubdate>2014</pubdate>
<title>Isle of Shoals Lidar</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<sngdate>
<caldate>20131208</caldate>
</sngdate>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>Isles_of_Shoals_LiDAR_DEM</srccitea>
<srccontr>Input LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Federal Emergency Management Agency</origin>
<pubdate>20120914</pubdate>
<title>TERRAIN, Merrimack HUC 8 Watershed, Massachusetts and New Hampshire</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<sngdate>
<caldate>20120914</caldate>
</sngdate>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>Merrimack_LiDAR_DEM</srccitea>
<srccontr>Input LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Federal Emergency Management Agency</origin>
<pubdate>20110715</pubdate>
<title>TERRAIN, Nashua, Massachusetts</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<sngdate>
<caldate>20110128</caldate>
</sngdate>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>Nashua_LiDAR_DEM</srccitea>
<srccontr>Input LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Quantum Spatial, Inc.</origin>
<pubdate>20180830</pubdate>
<title>Umbagog NH/ME 2016 LiDAR</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>20160406</begdate>
<enddate>20180524</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>Umbagog_LiDAR_DEM</srccitea>
<srccontr>LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Photo Science, Inc.</origin>
<pubdate>Unpublished Material</pubdate>
<title>White Mountain National Forest Lidar (USGS Contract: G10PC00026  Task Order Numbers: G10PD01309 and G10PD00088)</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>20101111</begdate>
<enddate>20120419</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>WMNF_2011_LiDAR_DEM</srccitea>
<srccontr>LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Photo Science, Inc.</origin>
<pubdate>Unpublished Material</pubdate>
<title>White Mountain National Forest Lidar (USGS Contract: G10PC00026  Task Order Numbers: G12PD00775)</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>20121106</begdate>
<enddate>20121117</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>WMNF_2012_LiDAR_DEM</srccitea>
<srccontr>LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>Quantum Spatial, Inc.</origin>
<pubdate>20150410</pubdate>
<title>G14PD01014 - White Mountain National Forest3 LiDAR - FY2014</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>20141028</begdate>
<enddate>20141106</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>WMNF_2014_LiDAR_DEM</srccitea>
<srccontr>LiDAR DEM</srccontr>
</srcinfo>
<srcinfo>
<srccite>
<citeinfo>
<origin>GRANIT, Earth Systems Research Center, University of New Hampshire</origin>
<pubdate>1992</pubdate>
<title>New Hampshire Political Boundaries at 1:24,000 Scale</title>
</citeinfo>
</srccite>
<typesrc>Digital data</typesrc>
<srctime>
<timeinfo>
<rngdates>
<begdate>1953</begdate>
<enddate>1990</enddate>
</rngdates>
</timeinfo>
<srccurr>Ground_Condition</srccurr>
</srctime>
<srccitea>PBP</srccitea>
<srccontr>New Hampshire state outline</srccontr>
</srcinfo>
<procstep>
<procdesc>
Created an Esri Mosaic Dataset comprising Coastal_LiDAR_DEM, Connecticut_LiDAR_DEM, Isles_of_Shoals_LiDAR_DEM, Merrimack_LiDAR_DEM,
Nashua_LiDAR_DEM, Umbagog_LiDAR_DEM, WMNF_2011_LiDAR_DEM, WMNF_2012_LiDAR_DEM, and WMNF_2014_LiDAR_DEM. This interim data set is
referenced to UTM Zone 19N, NAD83, meters with a vertical datum of NAVD88, meters.
</procdesc>
<srcused>
Coastal_LiDAR_DEM, Connecticut_LiDAR_DEM, Isles_of_Shoals_LiDAR_DEM, Merrimack_LiDAR_DEM,
Nashua_LiDAR_DEM, Umbagog_LiDAR_DEM, WMNF_2011_LiDAR_DEM, WMNF_2012_LiDAR_DEM, and WMNF_2014_LiDAR_DEM
</srcused>
<procdate>201809</procdate>
<srcprod>DEM</srcprod>
</procstep>
<procstep>
<procdesc>Ran ArcGIS BUFFER tool using PBP as input and a buffer distance of 500-feet.</procdesc>
<srcused>PBP</srcused>
<procdate>various</procdate>
<srcprod>PBP_BUF</srcprod>
</procstep>
<procstep>
<procdesc>Ran ArcGIS CLIP to extract HUC_10 polygons in and within 500-feet of New Hampshire (PBP_BUF)</procdesc>
<srcused>HUC_10, PBP_BUF</srcused>
<procdate>various</procdate>
<srcprod>HUC_10_CLIP</srcprod>
</procstep>
<procstep>
<procdesc>
Selected the HUC_10_CLIP polygon of interest from within ArcGIS Pro. Ran an in-house ArcGIS Pro model which comprises the
following steps: Buffer the selected HUC_10_CLIP polygon by 1500 meters - HUC_10_CLIP_1; Set process extent to
HUC_10_CLIP_1 polygon; Run COPY RASTER to extract rectangular dem from DEM - DEM_1; Run EXTRACT BY MASK to subset DEM_1 to
the HUC_10_CLIP_1 shape; Run FOCAL STATISTICS using an Inverse Distance weighted neighborhood and the Sum output statistic - DEM_2;
Run DIVIDE on the DEM_2 raster using the sum of the focal statistics neighborhood (10.50713904) as the divisor; Run the CONTOUR tool
using DEM_2 as the input raster, a contour interval of 2 and a Z-factor of 3.2808 - CON_1; CLIP CON_1 by HUC_10 - CON_2; DICE CON_2
with a maximum vertex count of 5000 (output spatial reference system, NHSP, NAD83) - CON_3; Add a field named INDEX; Populate INDEX
with values of 10 and 100 to flag 10 and 100-foot contours.
</procdesc>
<srcused>HUC_10, PBP_BUF</srcused>
<procdate>various</procdate>
<srcprod>CONTOURS</srcprod>
</procstep>
<procstep>
<procdesc>
Final processing included; Create, validate and fix the following topology errors: contour must not intersect, contour must not overlap, contour must not self-intersect, contour must not self-overlap.
In some coastal areas, spurious contours found in the ocean (presumably a result of wave action) were manually deleted.
</procdesc>
<srcused>CONTOURS</srcused>
<procdate>various</procdate>
<srcprod>CONTOURS</srcprod>
</procstep>
</lineage>
</dataqual>
<spdoinfo>
<direct>Vector</direct>
<ptvctinf>
<sdtsterm>
<sdtstype>String</sdtstype>
<ptvctcnt>18074</ptvctcnt>
</sdtsterm>
</ptvctinf>
</spdoinfo>
<spref>
<horizsys>
<planar>
<mapproj>
<mapprojn>NAD 1983 StatePlane New Hampshire FIPS 2800 Feet</mapprojn>
<transmer>
<sfctrmer>0.9999666666666667</sfctrmer>
<longcm>-71.66666666666667</longcm>
<latprjo>42.5</latprjo>
<feast>984250.0</feast>
<fnorth>0.0</fnorth>
</transmer>
</mapproj>
<planci>
<plance>coordinate pair</plance>
<coordrep>
<absres>0.0003280833333333333</absres>
<ordres>0.0003280833333333333</ordres>
</coordrep>
<plandu>foot_us</plandu>
</planci>
</planar>
<geodetic>
<horizdn>North American 1983</horizdn>
<ellips>GRS 1980</ellips>
<semiaxis>6378137.0</semiaxis>
<denflat>298.257222101</denflat>
</geodetic>
</horizsys>
<vertdef>
<altsys>
<altdatum>NAVD88</altdatum>
<altres>varies</altres>
<altunits>foot</altunits>
</altsys>
</vertdef>
</spref>
<eainfo>
<detailed>
<enttyp>
<enttypl>Contour_2ft_0108020105_filter</enttypl>
<enttypd>2-foot elevation contours</enttypd>
<enttypds>GRANIT</enttypds>
</enttyp>
<attr>
<attrlabl>OBJECTID</attrlabl>
<attrdef>Internal feature number.</attrdef>
<attrdefs>Esri</attrdefs>
<attrdomv>
<udom>Sequential unique whole numbers that are automatically generated.</udom>
</attrdomv>
</attr>
<attr>
<attrlabl>Shape</attrlabl>
<attrdef>Feature geometry.</attrdef>
<attrdefs>Esri</attrdefs>
<attrdomv>
<udom>Coordinates defining the features.</udom>
</attrdomv>
</attr>
<attr>
<attrlabl>Id</attrlabl>
<attrdef>Software populated id.</attrdef>
<attrdefs>Esri</attrdefs>
<attrdomv>
<udom>Sequential unique whole numbers that are automatically generated by the software.</udom>
</attrdomv>
</attr>
<attr>
<attrlabl>Contour</attrlabl>
<attrdef>Elevation contour interval in feet.</attrdef>
<attrdefs>Esri</attrdefs>
<attrdomv>
<udom>Elevation contour intervals automatically generated by the software.</udom>
</attrdomv>
</attr>
<attr>
<attrlabl>Shape_Length</attrlabl>
<attrdef>Length of feature in internal units.</attrdef>
<attrdefs>Esri</attrdefs>
<attrdomv>
<udom>Positive real numbers that are automatically generated.</udom>
</attrdomv>
</attr>
<attr>
<attrlabl>INDEX</attrlabl>
<attrdef>Value of index contour</attrdef>
<attrdefs>GRANIT</attrdefs>
<attrdomv>
<edom>
<edomv>10</edomv>
<edomvd>10&apos; index contour</edomvd>
<edomvds>GRANIT</edomvds>
</edom>
<edom>
<edomv>100</edomv>
<edomvd>100&apos; index contour</edomvd>
<edomvds>GRANIT</edomvds>
</edom>
</attrdomv>
</attr>
</detailed>
</eainfo>
<distinfo>
<distrib>
<cntinfo>
<cntorgp>
<cntorg>GRANIT, Earth Systems Research Center</cntorg>
<cntper>GRANIT Database Manager</cntper>
</cntorgp>
<cntpos>GRANIT Database Manager</cntpos>
<cntaddr>
<addrtype>mailing and physical address</addrtype>
<address>Morse Hall, University of New Hampshire</address>
<city>Durham</city>
<state>NH</state>
<postal>03824</postal>
<country>US</country>
</cntaddr>
<cntvoice>603-862-1792</cntvoice>
<cntfax>603-862-0188</cntfax>
<cntemail>granit@unh.edu</cntemail>
<hours>8:30AM-5PM, EST</hours>
</cntinfo>
</distrib>
<distliab>
Digital data in NH GRANIT represent the efforts of the contributing agencies to record information from the cited
source materials. Earth Systems Research Center, under contract to the NH Office of Strategic Initiatives, and in
consultation with cooperating agencies, maintains a continuing program to identify and correct errors in these
data. OSI, ESRC, and the cooperating agencies make no claim as to the validity or reliability or to any implied uses of
these data.
</distliab>
<stdorder>
<digform>
<digtinfo>
<formname>Esri file geodatabase</formname>
<transize>129 MBs</transize>
</digtinfo>
<digtopt>
<onlinopt>
<computer>
<networka>
<networkr>Network_Resource_Name: &lt;URL:http://www.granit.unh.edu&gt;</networkr>
</networka>
</computer>
</onlinopt>
</digtopt>
</digform>
<fees>No charge when downloaded from the Internet.</fees>
</stdorder>
<techpreq>Ability to read/import Esri file geodatabase format.</techpreq>
</distinfo>
<metainfo>
<metd>20190930</metd>
<metc>
<cntinfo>
<cntorgp>
<cntorg>GRANIT, Earth Systems Research Center</cntorg>
<cntper>GRANIT Database Manager</cntper>
</cntorgp>
<cntpos>GRANIT Database Manager</cntpos>
<cntaddr>
<addrtype>physical</addrtype>
<address>8 College Rd</address>
<city>Durham</city>
<state>New Hampshire</state>
<postal>03824</postal>
<country>US</country>
</cntaddr>
<cntvoice>603-862-1792</cntvoice>
<cntfax>603-862-0188</cntfax>
<cntemail>granit@unh.edu</cntemail>
</cntinfo>
</metc>
<metstdn>FGDC Content Standard for Digital Geospatial Metadata</metstdn>
<metstdv>FGDC-STD-001-1998</metstdv>
<mettc>local time</mettc>
</metainfo>
</metadata>
