Identification_Information: Citation: Citation_Information: Originator: New Hampshire Fish and Game Department Publication_Date: 20140818 Title: Sea Level Affecting Marshes Model (SLAMM) for New Hampshire Geospatial_Data_Presentation_Form: raster and vector digital data Publication_Information: Publication_Place: Concord, New Hampshire Publisher: New Hampshire Fish and Game Department Other_Citation_Details: None Online_Linkage: Larger_Work_Citation: Citation_Information: Originator: NHDES Coastal Program Publication_Date: 20140818 Title: Resilient New Hampshire Coasts Project Online_Linkage: Description: Abstract: Tidal marshes are susceptible to climate change, especially sea level rise (SLR). Changes in tidal marsh area and habitat type may be estimated using the SLAMM model. This simulates the dominant processes involved in wetland conversion and shoreline modification under different scenarios of sea level rise: inundation (based on elevation and slope), erosion (based on threshold of maximum fetch and proximity to tidal water), accretion (sea level rise is offset by sedimentation and vertical accretion), soil saturation (sea level rise affects the fresh water table) and barrier island overwash (for islands under 500m width). SLAMM tracks the rise of water levels and the salt boundary in 25-year time steps and predicts changes to wetland habitat based on known relationships between wetland types and tide ranges. The model was run using "protection off", thereby depicting the potential for marsh migration into upland areas despite limitations of current land use or development. The connectivity sub-model was run for both options, "on" requires a low-elevation pathway to saline water, and "off" does not require a flow pathway to saline water. SLR1M_2025_C: Potential change in salt marsh at 1.2 meter SLR for year 2025 (intermediate-high emissions scenario), with connectivity on SLR1M_2100_C: Potential change in salt marsh at 1.2 meter SLR for year 2100 (intermediate-high emissions scenario), with connectivity on SLR2M_2025_C: Potential change in salt marsh at 2 meter SLR for year 2025 (high emissions scenario), with connectivity on SLR2M_2100_C: Potential change in salt marsh at 2 meter SLR for year 2100 (high emissions scenario), with connectivity on Purpose: The data are intended to guide conservation strategies that will protect the coastal wetland areas that are likely to provide high quality wildlife habitat and persist for the longest duration. Supplemental_Information: The project was funded in part by the National Oceanic and Atmospheric Administration as a Project of Special Merit and Great Bay National Estuarine Research Reserve operating award. Project work began in early 2014 and is slated to be complete in spring 2015. The New Hampshire Fish and Game Department will make the full suite of data layers available upon request. Please refer to the SLAMM_Supplemental.pdf document that accompanies these data for additional information. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20110506 Ending_Date: 20140818 Currentness_Reference: Ground conditions Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.977939 East_Bounding_Coordinate: -70.695230 North_Bounding_Coordinate: 43.232083 South_Bounding_Coordinate: 42.851313 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: habitat Theme_Keyword: wildlife Theme_Keyword: wetland Theme_Keyword: salt marsh Theme_Keyword: sea level rise Theme_Keyword: slamm Place: Place_Keyword_Thesaurus: None Place_Keyword: United States Place_Keyword: Northeast Place_Keyword: New England Place_Keyword: New Hampshire Place_Keyword: NH Access_Constraints: None Use_Constraints: The data are intended for planning purposes only and are not for legal or engineering use. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NH Fish and Game Department Contact_Person: Catherine Callahan Contact_Position: GIS Coordinator Contact_Address: Address_Type: mailing and physical address Address: 11 Hazen Dr City: Concord State_or_Province: NH Postal_Code: 03301 Country: US Contact_Voice_Telephone: 603-271-3014 Contact_Facsimile_Telephone: 603-778-7398 Contact_Electronic_Mail_Address: catherine.callahan@wildlife.nh.gov Hours_of_Service: 8:00AM-4:30PM, EST Data_Set_Credit: NH Fish and Game Department Native_Data_Set_Environment: ESRI grid Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attributes were generated during the geoprocessing and verified by logical and visual validation. Logical_Consistency_Report: The data layers were evaluated to ensure logical habitat classification. Completeness_Report: The data are complete for the region. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The data were derived in part from the coastal New Hampshire LiDAR collection (2011), with a 2m GSD (or 2-meter nominal post spacing). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Vertical accuracy of the coastal LiDAR is 15.0 centimeters RMSEz or better. Lineage: 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: LIDAR Source_Contribution: Two-meter LiDAR DEM Source_Information: Source_Citation: Citation_Information: Originator: US Fish and Wildlife Service Publication_Date: 20140513 Title: NH_Coastal_Updated_Wetlands Type_of_Source_Media: None Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20140513 Source_Currentness_Reference: Ground_Condition Source_Citation_Abbreviation: NWI Source_Contribution: Provided data for the initial classification of coastal wetlands. Process_Step: Process_Description: NWI data assigned codes corresponding to wetland classification used by SLAMM software. NWI polygons converted to raster. Source_Used_Citation_Abbreviation: Process_Date: 20140513 Source_Produced_Citation_Abbreviation: Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: NAD 1983 UTM Zone 19N Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -69.0 Latitude_of_Projection_Origin: 0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000000002220024164500956 Ordinate_Resolution: 0.000000002220024164500956 Planar_Distance_Units: meter Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS 1980 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Detail_Citation: None Entity_and_Attribute_Overview: Each grid contains a "value" field reporting the SLAMM wetland classification. Attribute: Attribute_Label: VALUE Attribute_Definition: integer assigned by SLAMM software Attribute_Definition_Source: SLAMM classification code Attribute_Domain_Values: 1 Developed Dry Land (differentiated only if "protect developed" option is chosen.) 2 Undeveloped Dry Land (if lower elevation drops below salt boundary then inundation takes place. If connectivity model included, land must be directly connected to saline water to be inundated.) 3 Swamp (palustrine forested broad-leaved deciduous; if connectivity model is included, the swamp must be directly connected to saline water to be inundated.) 4 Cypress Swamp (needle-leaved deciduous) 5 Inland Fresh Marsh (lacustrine, palustrine, and riverine emergent) 6 Tidal Fresh Marsh (riverine tidal emergent) 7 Transitional Salt Marsh (estuarine intertidal scrub-shrub broad-leaved deciduous) 8 Regularly Flooded Marsh (salt marsh, estuarine intertidal emergent) 9 Mangrove (estuarine intertidal forested and scrub-shrub broad-leaved evergreen) 10 Estuarine Beach (estuarine intertidal unconsolidated shore sand or beach-bar) 11 Tidal Flat (estuarine intertidal unconsolidated shore mud/organic or flat) 12 Ocean Beach (marine intertidal unconsolidated shore sand) 13 Ocean Flat (marine intertidal unconsolidated shore mud or organic) 14 Rocky Intertidal (marine intertidal rocky shore) 15 Inland Open Water (riverine, lacustrine, and palustrine open water) 16 River Tidal Open Water (riverine tidal open water) 17 Estuarine Water (estuarine subtidal) 18 Tidal Creek (estuarine intertidal stream bed) 19 Open Ocean (marine subtidal) 20 Irregularly Flooded Marsh (irregularly flooded estuarine intertidal emergent) 21 Not Used (previously "tall Spartina") 22 Inland Shore (shoreline not subject to the elevation pre-processor; must be connected to saline water to be inundated) 23 Tidal Swamp (tidally influenced swamp) 24 Blank (not processed) 25 Vegetated Tidal Flat (site-specific data, not NWI derived; high tidal flat that borders on regularly flooded marsh but that has a lower density of vegetation than the adjoining marshland) 26 Backshore (site-specific data, not NWI derived; dry part of active beach above MHHW) Attribute: Attribute_Label: COUNT Attribute_Definition: count Attribute_Definition_Source: Esri Attribute_Domain_Values: Attribute: Attribute_Label: YEAR Attribute_Definition: scenario year Attribute_Definition_Source: SLAMM software Attribute_Domain_Values: 2012, 2025, 2050, 2075, 2100 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Earth Systems Research Center, University of New Hampshire Contact_Person: GRANIT Database Manager Contact_Position: GRANIT Database Manager Contact_Address: Address_Type: mailing and physical address Address: Morse Hall, University of New Hampshire City: Durham State_or_Province: NH Postal_Code: 03824 Contact_Voice_Telephone: 603-862-1792 Contact_Facsimile_Telephone: 603-862-0188 Contact_Electronic_Mail_Address: granit@unh.edu Hours_of_Service: 8:30AM - 5 PM, EST Resource_Description: Downloadable Data Distribution_Liability: 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 Energy and Planning, and in consultation with cooperating agencies, maintains a continuing program to identify and correct errors in these data. OEP, ESRC, and the cooperating agencies make no claim as to the validity or reliability or to any implied uses of these data. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI grid Transfer_Size: 8 MB Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ESRI geodatabase Fees: No charge when downloaded from website. Cost of reproduction for provision on CD/DVD or other media. Metadata_Reference_Information: Metadata_Date: 20150427 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