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Service Description: This map contains the following:Fluvial Erosion Hazard Zones, created utilizing the New Hampshire implementation of the Vermont Stream Geomorphic Assessment protocols, for all of New Hampshire, based upon data from geomorphic assessments to date. New Hampshire Geological Survey 2014.Data collected at stream crossings throughout New Hampshire between 2009 and 2014, for use in transportation, water management and hazard mitigation purposes. The attribute table contains a suite of information regarding each crossing, in addition to the geomorphic and aquatic organism passage compatibility rankings, which can be mapped for culvert replacement prioritization planning.Location information for river geomorphic features mapped during the NH implementation of the Vermont Phase 2 protocols. These include alluvial fans, beaver dams, grade controls, active migration features (flood chutes, potential avulsions), and steep riffles or headcuts. A separate guide , entitled "Descriptions of fluvial geomorphology data," from 2014, is available from the New Hampshire Geological Survey, Department of Environmental Services. Locations of roads, rails, and trails that are near assessed rivers, as identified in the New Hampshire implementation of the Vermont Phase 1 and Phase 2 geomorphic assessment protocols. Impacts addressed include erosion, berms, no riparian buffers, mass failures, improved paths, riverside development, stormwater drains and bank armoring.

Map Name: Layers

Legend

All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers:

• Coastal Viewer (0)
  • Stream Crossing Data (1)
    • Geomorphic_Compatibility_Scores (2)
    • Aquatic_Organism_Passage_Scores (3)
    • Hydraulic Capacity Scores (4)
      • 10 yr Return Period Streamflow (5)
      • 25 yr Return Period Streamflow (6)
      • 50 yr Return Period Streamflow (7)
      • 100 yr Return Period Streamflow (8)
  • Geomorphic Data (9)
    • Geomorphic_Features (10)
    • Road_Encroachments (11)
    • Railroad_Encroachment (12)
    • Channel_Straightening (13)
    • State_Impact_Metrics (14)
    • Fluvial_Erosion_Hazard_Zones (15)

Description:

Service Item Id: 38c80a1cbe4d42e6a5c9ed87be69e215

Copyright Text: New Hampshire Geological Survey, New Hampshire Department of Environmental Services, Concord, NH

Spatial Reference: 102710  (3437)


Single Fused Map Cache: false

Initial Extent:

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YMin: 333052.60625886836
XMax: 1561709.5526110758
YMax: 865229.9981748684
Spatial Reference: 102710  (3437)

Full Extent:

XMin: 753008.3585051633
YMin: 77987.16250948608
XMax: 1215595.4474367462
YMax: 827742.2581406534
Spatial Reference: 102710  (3437)

Units: esriFeet

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: Coastal Viewer Map
Author:
Comments: This map contains the following:Fluvial Erosion Hazard Zones, created utilizing the New Hampshire implementation of the Vermont Stream Geomorphic Assessment protocols, for all of New Hampshire, based upon data from geomorphic assessments to date. New Hampshire Geological Survey 2014.Data collected at stream crossings throughout New Hampshire between 2009 and 2014, for use in transportation, water management and hazard mitigation purposes. The attribute table contains a suite of information regarding each crossing, in addition to the geomorphic and aquatic organism passage compatibility rankings, which can be mapped for culvert replacement prioritization planning.Location information for river geomorphic features mapped during the NH implementation of the Vermont Phase 2 protocols. These include alluvial fans, beaver dams, grade controls, active migration features (flood chutes, potential avulsions), and steep riffles or headcuts. A separate guide , entitled "Descriptions of fluvial geomorphology data," from 2014, is available from the New Hampshire Geological Survey, Department of Environmental Services. Locations of roads, rails, and trails that are near assessed rivers, as identified in the New Hampshire implementation of the Vermont Phase 1 and Phase 2 geomorphic assessment protocols. Impacts addressed include erosion, berms, no riparian buffers, mass failures, improved paths, riverside development, stormwater drains and bank armoring.
Subject: This map contains geomorphic features, impact metrics, stream crossing data, and Fluvial Erosion Hazard Zones for NH river assessments.
Category:
Keywords: fluvial geomorphology,hazard mitigation,rivers management,erosion,revetment,bank armor,riparian buffer,improved path,berm,mass failure,development,stormwater,FEH,Fluvial Erosion Hazard,Erosion,Zone,River,Safety,New Hampshire,stream crossings,roads,highways,transportation,geomorphology,aquatic organism passage,fisheries,public safety
AntialiasingMode: None
TextAntialiasingMode: Force

Supports Dynamic Layers: true

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true



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