ElevationDEM_DEMHE1MLCB

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: University of Vermont
Publication_Date: 20220629
Publication_Time:
Title: ElevationDEM_DEMHE1MLCB
Edition: First
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name:
Small stream hydro enforced DEMs for the Lake Champlain Basin, 2013-2017
Issue_Identification: First Edition (2022)
Publication_Information:
Publication_Place: University of Vermont
Publisher:
Other_Citation_Details: Tile Structure - HUC8
Description:
Abstract:
The small stream hydro enforced DEMs for the Lake Champlain Basin (2013-2017) were generated from the most recent LiDAR-derived QL2 DEMs available on Vermont Open Geodata Portal. While many of the river crossings and raised structures (e.g.,bridges, roads overlaying culverts) along the main stem rivers were removed in the original hydro enforced DEM (for all years but 2017), most crossings along tributaries and smaller streams persisted. In this dataset the DEMs were manually edited to hydrologically enforce the full stream network for rivers that drain more than 2 square-miles within the Lake Champlain Basin in Vermont. This dataset enables hydrologic models to simulate flow under bridges or through culverts without the creation of artificially pooled depressions that occur behind non hydro enforced river crossings.
Funding mostly from the Lake Champlain Basin Program and the Vermont DEC--in support of the DEC’s Functioning Floodplain Initiative (FFI).
Purpose:
Small stream hydro-enforced DEMs for the Lake Champlain Basin may be used for hydrologic analyses. This dataset was developed to support creation of the Topographically-Defined Floodplains for the Lake Champlain Basin, 2013-2017.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20130000
Ending_Date: 20170000
Currentness_Reference: Ground Conditions
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -74.734688
East_Bounding_Coordinate: -71.86162
North_Bounding_Coordinate: 45.689942
South_Bounding_Coordinate: 43.105759
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: LiDAR
Theme_Keyword: Light Detection and Ranging
Theme_Keyword: high-resolution
Theme_Keyword: topography
Theme_Keyword: DEM
Theme_Keyword: Digital elevation model
Theme_Keyword: Hydrologic
Theme_Keyword: Hydrologic Modeling
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Vermont
Place_Keyword: Lake Champlain
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2022
Access_Constraints:
VCGI and the State of VT makes no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Use_Constraints:
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Vermont
Contact_Address:
Address_Type: Mailing and Physical Address
Address: University of Vermont
City: Burlington
State_or_Province: Vermont
Postal_Code: 05405
Country: USA
Contact_Voice_Telephone:
Contact_TDD/TTY_Telephone:
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: Rebecca.Diehl@uvm.edu; Kristen.Underwood@uvm.edu
Hours_of_Service:
Data_Set_Credit:
Rebecca Diehl (UVM Faculty) and Kristen Underwood (UVM Faculty) for leading research group in development
Security_Information:
Security_Classification_System:
Security_Classification: Unclassified
Security_Handling_Description: No Security Considerations
Native_Data_Set_Environment: ESRI ArcGIS software

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Completeness_Report:
Hydro-enforcing is complete for the Vermont porition of the Lake Champlain Basin for streams that drainge more than 2 square-miles. The Lake Champlain Basin was defined according to the HUC12 boundaries obtained from VCGI.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Vertical_Positional_Accuracy:
RMSEz in open terrain is 9.25cm for QL2. See VCGI Lidar data product web page link above for details by collection extent. Elevations of modified stream crossings were set to the average channel centerline elevations upstream and downstream of the crossing.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date: 20181219
Publication_Time:
Title:
2017 Western Vermont Quality Level 2 Lidar Hydro-Flattened Digital Elevation Model (DEMHF) data from the 3D Elevation Program (3DEP)
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Montpelier VT 05620-0501
Publisher: VT Center for Geographic Information
Source_Scale_Denominator:
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Time_of_Day:
Source_Currentness_Reference:
Source_Citation_Abbreviation:
Source_Contribution:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date: 20170720
Publication_Time:
Title:
2014 Quad Counties Quality Level 2 Lidar Hydro Enforced Digital Elevation Model (DEMHE) data from the 3D Elevation Program (3DEP)
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Montpelier VT 05620-0501
Publisher: VT Center for Geographic Information
Source_Scale_Denominator:
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Time_of_Day:
Source_Currentness_Reference:
Source_Citation_Abbreviation:
Source_Contribution:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date: 20170720
Publication_Time:
Title:
2013 Rutland/GI Counties Quality Level 2 Lidar Hydro Enforced Digital Elevation Model (DEMHE) data from the 3D Elevation Program (3DEP)
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place:
Publisher: U.S. Geological Survey (USGS)
Source_Scale_Denominator:
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Time_of_Day:
Source_Currentness_Reference:
Source_Citation_Abbreviation:
Source_Contribution:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date: 1/3/2014
Publication_Time:
Title: VT Subwatershed Boundaries- HUC12 (WaterHydro_WBD12VT)
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place:
Publisher: National Resource Conservation Service (NRCS)
Source_Scale_Denominator:
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Time_of_Day:
Source_Currentness_Reference: 12/1/2018
Source_Citation_Abbreviation:
Source_Contribution:
The VT subwatershed boundaries were downloaded from the VCGI data portal. DEM's were clipped to the HUC12 boundary.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date: 07/23/2020
Publication_Time:
Title:
USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit- (0430)
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place:
Publisher: U.S. Geological Survey (USGS)
Source_Scale_Denominator:
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Time_of_Day:
Source_Currentness_Reference: 10/16/2005
Source_Citation_Abbreviation:
Source_Contribution:
The NHDPlus HR dataset for the Lake Champlain 4-digut HU was downloaded from The National Map (https://www.sciencebase.gov/catalog/item/5f1b089682cef313ed8824c7) and used to define the reach extents. NHDPlusFlowlineVAA table was joined to the NHDPlusBurnLineEvent feature using the NHDplusID field, and dissolved based on ReachCode. NHDPlus reaches that had a maximum drainage area less than 5.18 square-km were excluded, as were those that fell outside the Lake Champlain Basin in Vermont.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Publication_Date: 6/1/2021
Publication_Time:
Title: VT Road Centerline data layer (TransRoad_RDS)
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place:
Publisher: Vermont Agency of Transportation (VTrans)
Source_Scale_Denominator:
Type_of_Source_Media:
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:
Time_of_Day:
Source_Currentness_Reference: 10/24/2016
Source_Citation_Abbreviation:
Source_Contribution:
The VT Road Centerline data layer was used to identify stream crossings.
Process_Step:
Process_Description: DEMHE and DEMHF resampled to 1.0 m.
Process_Date:
Process_Step:
Process_Description:
DEMHE and DEMHF clipped to HUC-12 boundaries in the Lake Champlain Basin.
Process_Date:
Process_Step:
Process_Description:
All river crossings along the NHDplus river network for streams that drain more than 2 square miles were manually checked. If elevated bridge decks or road grades existed, DEM was edited to represent average channel geometry upsteam and downstream of crossing.
Process_Date:
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jarlath O'Neil-Dunne
Contact_Organization: University of Vermont Spatial Analysis Lab
Contact_Position:

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: RASTER
Direct_Spatial_Reference_Method: Raster
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point | G-polygon | Complete chain
Point_and_Vector_Object_Count:

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 4400
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999964
Longitude_of_Central_Meridian: -72.500000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 1 / 298.25722210

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: raster attributes
Attribute:
Attribute_Label: Value
Attribute_Definition: Elevation in Meters
Attribute_Definition_Source:
Attribute_Domain_Values:
Unrepresentable_Domain:

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 1 National Life Dr., Dewey Building, 2nd Floor
City: Montpelier
State_or_Province: Vermont
Postal_Code: 05620-2001
Country: USA
Contact_Voice_Telephone: (802) 585-0820
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: vcgi@vermont.gov
Hours_of_Service:
Resource_Description: Download from web site.
Distribution_Liability:
VCGI makes no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIF
Format_Specification: TIFF format
Format_Information_Content: geospatial data
File_Decompression_Technique: ZIP extraction tool
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://drive.google.com/drive/folders/1CGtdxG5OH_9k7g4933HN9vyA1f75zoi8?usp=sharing
Access_Instructions:
Offline_Option:
Offline_Media:
Fees:
Custom_Order_Process:
Technical_Prerequisites: GIS Software
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20220908
Time_of_Day:

Metadata_Reference_Information:
Metadata_Date: 20220908
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: UVM
Contact_Person: Rebecca Diehl
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 94 University Place, University of Vermont
City: Burlington
State_or_Province: VT
Postal_Code: 05405
Country: USA
Contact_Voice_Telephone:
Contact_TDD/TTY_Telephone:
Contact_Facsimile_Telephone:
Metadata_Standard_Name: FGDC Content Standards for Digital Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: Local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification_System: N/A
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: No security considerations

Generated by mp version 2.9.22 on Thu Sep 08 12:13:38 2022