20120221141038001.0FGDC CSDGM MetadataFALSEbelknap_buffer_gap0021.801file://\\contact\granit-web3\dataarchive\DatatoProcess\DES-March2012-BufferGapAnalysis\belknap_buffer_gap.shpLocal Area Network967127.3751481119112.252879286393.707122458195.6350311ProjectedGCS_North_American_1983Linear Unit: Foot_US (0.304801)NAD_1983_StatePlane_New_Hampshire_FIPS_2800_Feet<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.0'><WKT>PROJCS["NAD_1983_StatePlane_New_Hampshire_FIPS_2800_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",984250.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-71.66666666666667],PARAMETER["Scale_Factor",0.9999666666666667],PARAMETER["Latitude_Of_Origin",42.5],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",3437]]</WKT><XOrigin>-17463700</XOrigin><YOrigin>-48257000</YOrigin><XYScale>137246076.82899535</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0032808333333333335</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>3437</WKID></ProjectedCoordinateSystem>CopyFeatures belknap_buffer_gap M:\Staff\kristen\Projects\Buffer_Gap\Shapefiles\belknap_buffer_gap.shp # 0 0 020120320122923002012032012292300FGDCMicrosoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.3.3600New Hampshire Buffer Gap Analysis2009-07-22T00:00:00Pierce RigrodNew Hampshire Department Of Environmental ServicesDrinking Water and Groundwater Bureau29 Hazen DriveConcordNew Hampshire03302Pierce.Laskey-Rigrod@des.nh.govUSA(603) 271-0688(603) 271-3305For Tiers 1 to 3 final output dataset depends upn the currentness of the source data layers including Conservation Lands (conslands.shp) and the National Hydrography Network and “local protections” tabular data in MS Access and related geodata developed and maintained by DES. Contact DES for more details.
NOTE: At the end of October 2009 two major updates were applied to the dataset. The first was an adjustment to the Tier classification based on updates on local municipal regulations that were provided by the Piscataqua Region Estuaries Partnership. The second update was based on the overlay of an updated Conservation Lands dataset in which situation stream segments within conservation lands were classified as Tier 1.
1-71.731475-71.15623243.75714643.284686To identify gaps in riparian buffer protection and to measure and report the river and lake shoreline frontage protected by conservation land, local zoning ordinances, or the Comprehensive Shoreline Protection Act (CSPA), in effect as of July 1st, 2008 under New Hampshire Status, Title L., Chapter 483-B.Buffer GapRiparian BufferRiparian Protection<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Some river and lake riparian buffers are currently protected under existing local ordinances or by conservation lands and easements. The state Comprehensive Shoreline Protection Act protects public waters including “great ponds” (waterbodies greater than 10 acres) and rivers with a stream-order of four or greater. This analysis identifies and measures where protections occur and where they are absent along river and lake shoreline frontage. The analysis categorizes all of the state’s rivers or lakes into six levels of protection according to the following criteria in Table 1. </SPAN></SPAN></P><P /><P STYLE="text-align:Center;margin:0 0 0 0;"><SPAN><SPAN>Table 1</SPAN></SPAN></P><TABLE><TBODY><TR><TD><P STYLE="text-align:Center;margin:0 0 0 0;"><SPAN><SPAN>Field Code for Level of Buffer Protection </SPAN></SPAN></P><P STYLE="text-align:Center;margin:0 0 0 0;"><SPAN><SPAN>(1 = highest)</SPAN></SPAN></P></TD><TD><P STYLE="text-align:Center;margin:0 0 0 0;"><SPAN><SPAN>Description of </SPAN></SPAN></P><P STYLE="text-align:Center;margin:0 0 0 0;"><SPAN><SPAN>Tier Buffer Protections</SPAN></SPAN></P></TD></TR><TR><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Tier 1</SPAN></SPAN></P></TD><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Conservation Land in excess of 300 feet from river/lake frontage</SPAN></SPAN></P></TD></TR><TR><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Tier 2</SPAN></SPAN></P></TD><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Conservation Land greater than or equal to 100 feet but less than 300 feet from river/lake frontage</SPAN></SPAN></P></TD></TR><TR><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Tier 3</SPAN></SPAN></P></TD><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>CSPA Protection (150 ft Natural Woodland Buffer) </SPAN></SPAN></P></TD></TR><TR><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Tier 4</SPAN></SPAN></P></TD><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Local Protection Ordinance, buffer greater than or equal to 100 feet</SPAN></SPAN></P></TD></TR><TR><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Tier 5</SPAN></SPAN></P></TD><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Local Protection Ordinance, buffer greater then or equal to 50 feet, but less than 100 feet</SPAN></SPAN></P></TD></TR><TR><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>Tier 6</SPAN></SPAN></P></TD><TD><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>No Protection (meeting the criteria in the above 5 Tiers) </SPAN></SPAN></P></TD></TR></TBODY></TABLE><P><SPAN /></P></DIV></DIV></DIV>New Hampshire Department of Environmental ServicesNone
Hydrography, Flowing Water, Watershed Planning, Stream Order, Shoreline ProtectionStatePierce RigrodNew Hampshire Department of Environmental Services29 Hazen DriveConcordNH03302pierce.laskey-rigrod@des.nh.govUSA603-271-0688603-271-3305Shapefile1.801datasetEPSG7.4.110781SimpleFALSE10781TRUEFALSEbelknap_buffer_gapFeature Class10781Stream segments based on national hydrography datasetFIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.StreamOrdeStreamOrdeSmallInteger440Strahler stream order to define stream size based on hierachy of tributaries.TIERTIERSmallInteger440Tier Classification of the stream segmentShape_LengShape_LengDouble1110520120320Pierce RigrodNew Hampshire Department of Environmental Services29 Hazen DriveConcordNH03302Pierce.Laskey-Rigrod@des.nh.govUSA603-271-0688603-271-3305The process to classify the stream segments is built on ESRI’s Model Builder – to perform the multiple steps required to conduct the analysis – and a geodatabase to retain “scratch” or “temp” files that are generated during the analysis. The final output from the Model Builder is stored in a second geodatabase that is used to distribute model results. All analysis based on vector datasets.
The classification system is hierarchical with Tier 1 at the top of the list and Tier 6 at the bottom. The assignment of Tier protection values (1-6) has been done so that river or lake segments are assigned the highest protection (Tier) value if they meet that Tier’s criteria. Accordingly, river or lake frontage meeting Tier 1 criteria and also meeting Tier 2 or other criteria has been assigned a final Tier value = 1 (its highest level of protection). This order of precedence (1 over 2, 2 over 3, etc) results in no overlap between Tier protection classes (no double counting) in order to better estimate protected frontage as a percentage of all frontage in the watershed.
Tier 1 and 2:
The two primary datasets for Tier 1 and Tier 2 analysis is the Conservation polygon shapefile (provided by NH GRANIT) and the National Hydrography Dataset provided by UNH, edited by DES. The method for generating the conservation lands dataset was a combination of converting vector data to raster and employing Spatial Analyst to identify segments whose buffers would intersect conservation lands. Conservation land parcels with no Primary Protection Type (PPTYPE field is NULL) were excluded from this analysis (see Known Issues below) and the stream segments for these parcels would be subject to Tier 3 or higher analysis.
NOTE 1: Most common error within Tier 1 and 2 coding was misclassifications of short stream segments to Tier 6 within conservation lands or coding of short segments outside conservation lands boundaries as Tier 1. To correct all Tier 6 records were isolated and an overlay analysis was used to identify which stream segments intersected the conservation land polygon (excluding parcels with no PPTYPE listed). The selected stream segments within conservation land parcels coded as Tier = 6 (no protection) were corrected from Tier 6 to Tier 1. Those short segments extending beyond the conservation land boundaries remain in the data as errors and may be manually corrected or further geoprocessed to correct.
Tier 3 (CSPA):
Tier 3 includes rivers with a stream order of 4 or greater, or great ponds not assigned a Tier 1 or 2 (i.e. not protected by conservation land). A simple query was used to identify NULL classifications (after the Tier 1 and Tier 2 classification) and to identify stream orders of 4 or greater.
NOTE 2: In the original creation of the dataset the generation of double lines (that is, 2 lines for one stream segment representing each river bank of the segment) from the hydrography dataset did not generate the proper stream order for particular segments associated with double lined hydrography. However, spot checks were conducted on the major rivers to correct for this. Later iterations and methods for generating this dataset will be corrected to ensure that this will no longer be an issue.
Tier 4 and Tier 5 (Local Regulations):
Tier 4 and Tier 5 is based on the presence of local zoning regulation for stream segments that do not fall into the Tier’s 1 – 3 criteria. The base data layer that identifies these communities with buffer protections in zoning ordinance was conducted in previous analysis and its results incorporated into this analysis. Stream segments were assigned to the Tier’s 4 or 5 if local zoning protected buffers according to the Tier 4 or 5 criteria and the stream/pond frontage was not assigned a higher Tier value (e.g. 1 – 3).
Tier 6 (No Protection):
A Tier 6 classification indicates no protection for a stream segment. It is assigned to the all remaining river or pond frontage without protection identified and coded in the previous steps