Identification_Information: Citation: Citation_Information: Originator: Earth Systems Research Center, University of New Hampshire Publication_Date: 20130531 Title: Two Foot Contours - Little Suncook River (010700060502) - raw Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Durham, New Hampshire Publisher: Earth Systems Research Center, University of New Hampshire Other_Citation_Details: None Online_Linkage: Browse_Graphic_File_Description: gif image file Browse_Graphic_File_Type: gif Data_Set_Credit: NH GRANIT Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: 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 deliverables had a 2 meter or better nominal post spacing (2m GSD) and a a bare earth vertical accuracy of 15.0 centimeters RMSEz or better. Prior to contouring, the input raster was "smoothed" using a 3x3 circular neighborhood. The original elevation units of meters were converted to feet using a factor of 3.2808. Quantitative_Attribute_Accuracy_Assessment: Attribute_Accuracy_Value: Floating point Attribute_Accuracy_Explanation: None Logical_Consistency_Report: It is possible that individual contour lines cross one another in areas of complex or steep terrain. Polyline topology was not used to evaluate or fix this possible issue. Completeness_Report: Contour line segments less than 1 meter in length have been deleted. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Complex Systems Research Center, University of New Hampshire Publication_Date: 200601 Title: New Hampshire Hydrography Dataset Type_of_Source_Media: None Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1956 Ending_Date: 2005 Source_Currentness_Reference: Ground_Condition Source_Citation_Abbreviation: Bound_HUC Source_Contribution: NHD HUC watershed delineations. Source_Information: Source_Citation: Citation_Information: Originator: Photo Science, Inc. Publication_Date: 2011 Title: Coastal New Hampshire 2011 LiDAR collection Type_of_Source_Media: None Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20110506 Ending_Date: 20110630 Source_Currentness_Reference: Ground_Condition Source_Citation_Abbreviation: Coastal_LiDAR_DEM Source_Contribution: Two-meter LiDAR DEM Process_Step: Process_Description: ArcGIS "Focal Statistics" tool, circular 3x3 neighborhood, mean statistic. Source_Used_Citation_Abbreviation: Coastal_LiDAR_DEM Process_Date: 20130416 Source_Produced_Citation_Abbreviation: temp_LiDAR_DEM Process_Step: Process_Description: Ran the ArcGIS "Contour" tool using temp_LiDAR_DEM as the input raster and a Z factor of 3.2808 to produce 2-foot contours. A post processing step to remove short contours (length < 1 meter) was also performed. Source_Used_Citation_Abbreviation: temp_LiDAR_DEM Process_Date: 20130503 Source_Produced_Citation_Abbreviation: temp_Contours Process_Step: Process_Description: Final processing included 1) clipping the regional contour data set by HUC10, 2) projecting each HUC10 data set from UTM to NH State Plane feet, NAD83, and 3) clipping the HUC10 data sets by HUC12. (The original plan was to distribute the data by HUC10, but the large file sizes (in excess of 500 GB) were considered too large for web distribution. Once this finding was discovered, it was more expedient to re-clip from the HUC10 data sets.) Source_Used_Citation_Abbreviation: temp_Contours, Bound_HUC Process_Date: 20130503 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 9893 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: NAD 1983 StatePlane New Hampshire FIPS 2800 Feet Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9999666666666667 Longitude_of_Central_Meridian: -71.66666666666667 Latitude_of_Projection_Origin: 42.5 False_Easting: 984250.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.0003280833333333333 Ordinate_Resolution: 0.0003280833333333333 Planar_Distance_Units: foot_us Geodetic_Model: Horizontal_Datum_Name: D North American 1983 Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Contours_2ft_010700060502_raw Entity_Type_Definition: 2-foot elevation contours Entity_Type_Definition_Source: GRANIT Attribute: Attribute_Label: Shape_Length Attribute_Definition: Length of feature in internal units. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: Id Attribute_Definition: Software populated id. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated by the software. Attribute: Attribute_Label: Contour Attribute_Definition: elevation contour interval in feet. Attribute_Definition_Source: GRANIT Attribute_Domain_Values: Unrepresentable_Domain: Elevation contour intervals automatically generated by the software. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: OBJECTID Attribute_Definition: Internal feature number. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Metadata_Reference_Information: Metadata_Date: 20130520 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Earth Systems Research Center Contact_Person: GRANIT Database Manager Contact_Position: GRANIT Database Manager Contact_Address: Address_Type: physical Address: 8 College Rd City: Durham State_or_Province: New Hampshire Postal_Code: 03824 Country: US Contact_Voice_Telephone: 603-862-1792 Contact_Facsimile_Telephone: 603-862-0188 Contact_Electronic_Mail_Address: granit@unh.edu Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time