Identification_Information:
Citation:Citation_Information:
Originator: William R. Sweeney and Leslie Morrissey, SNR/UVM
Publication_Date: 19990415
Publication_Time: unknown
Title: Wetlands of Charlotte, Vermont - Based on Aerial Photos
Edition: 1.0
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Burlington, VT
Publisher: William R. Sweeney and Leslie Morrissey.
Other_Citation_Details: unknown
Online_Linkage: unknown
Description:

Abstract:
Wetlands were delineated from 1992-94 color infrared aerial photography by Janice Stone, University of Massachusetts. The areas were drawn onto acetate overlays with a thin pen; the pen width equals about 20 feet of ground distance on the 1:40,000 scale photos. The minimum wetland mapping unit is generally wetlands less than 1 acre in size.

These overlays were used by the University of Vermont Spatial Analysis Lab as a means of creating this data layer. The overlays were rectified using ERDAS Imagine Orthomax software and registered to E911 roads coverage. All of the wetlands were hand digitized from the RF 1:40000 overlays imbedded in the photos by scanning at 450 dpi.

Purpose: Town of Charlotte wetlands
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1992 - 1994
Time_of_Day: Unknown
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 434041.094
East_Bounding_Coordinate: 448487.000
North_Bounding_Coordinate: 195829.719
South_Bounding_Coordinate: 207101.781

Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Charlotte Wetlands
Theme_Keyword: photo-interpreted wetlands
Theme_Keyword: wetland mapping
Theme_Keyword: wetlands
Theme_Keyword: wetland inventory

Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Townwide
Place_Keyword: town
Place_Keyword: Charlotte
Stratum:
Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Stratum_Keyword
Temporal:
Temporal_Keyword_Thesaurus: None
Temporal_Keyword: Temporal_Keyword

Access_Constraints: The UVM Spatial Analysis Lab make 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:
This data layer is intended for planning and informational
use, to alert the public to the presence of photo-interpreted
wetlands. This data layer is not designed to be used as
sole criteria in any decision making process. Questions
about jurisdictional wetland location and use should be referred to the ANR DEC Wetlands section, (802) 244-6951.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leslie Morrissey
Contact_Organization: UVM Spatial Analysis Lab
Contact_Position: Technician
Contact_Address:
Address_Type: Mailing and Physical Address
Address: UVM - Aiken Center
City: Burlington
State_or_Province: Vt.
Postal_Code: 05402
Country: USA
Contact_Voice_Telephone: 802-656-4280
Contact_TDD/TTY_Telephone: None
Data_Set_Credit: William Sweeney and Leslie Morrissey
Security_Information:
Security_Handling_Description: No Security Considerations
Security_Classification: Unclassified
Security_Classification_System: N/A
Native_Data_Set_Environment: ARC/INFO
Cross_Reference:
Citation_Information:
Originator: William Sweeney and Leslie Morrissey
Publication_Date: 19990415
Publication_Time: unknown

Title: Wetlands of Charlotte, Vermont - Based on Aerial Photos
Edition: 1.0
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Burlington, VT.
Publisher: William Sweeney and Leslie Morrissey
Other_Citation_Details: charwet.met
Online_Linkage: unknown
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data was developed and QA/QCed in several phases.

DATA DEVELOPMENT: The initial dataset was scanned or digitized from "source" materials. The majority of the scanned data was based on RF 40000 acetate overlays of NHAP CIR photography. Digitized data was scanned at 450 dpi and rectified and registered to E911 roads coverages. Janice Stone, University of Massachusetts, created this initial data layer.

QA/QC PROCEDURES: Quality control for this dataset
included the following; 1) field checking 2) spatial fidelity, 3) attribute value correctness, 4) and topological integrity.
1) Field Checking: Random wetlands were field checked by Karen Bates, Agency of Natural Resources.
2) SPATIAL FIDELITY: Check plots were generated and used to identify the presence/absence of wetland polygons. Errors were flagged and corrected. Problems which could not be resolved by Spatial analysis Lab staff were forwarded to Janice Stone for review.
3) ATTRIBUTE VALUE CORRECTNESS: Check plots were also used to identify attribution problems. Errors were flagged and corrected. Problems which could not be resolved by Spatial analysis Lab staff were forwarded to Janice Stone for review.
4) TOPOLOGICAL INTEGRITY: Problems such as dangling nodes and label errors were identified and resolved.

FINAL PHASE:
1) Verified that the CODE, TYPE, ECOSYS were fully populated with appropriate values.
2) Verified that AAT and PAT file definitions were consistent.
3) Calculated attributes.
4) Verified and User-IDs were unique.

NOTE: The presence/absence/delineation of wetlands
was not verified completely in the field. The intent of this data layer is to represent wetlands interpretable from aerial photography.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: 1.0
Attribute_Accuracy_Explanation: Fuzzy Tolerance
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: 10 map units
Attribute_Accuracy_Explanation: Dangle
Logical_Consistency_Report:
This data layer is intended for planning and informational
use, to alert the public to the presence of wetlands not included on the VSWI. This data layer is not designed to be used as
sole criteria in any decision making process. Questions
about regulatory wetland location and use should be referred to the
ANR DEC Wetlands section, 244-6951.
Completeness_Report:
This is a digital "representation" of wetlands included in an aerial photo survey. This map is quite different than the U.S. Fish and Wildlife Service NWI maps have been adopted by the State of Vermont as "official" regulatory wetlands. In many cases, wetlands included on this map do not appear on official VSWI maps. Line work was digitized from acetate overlays of RF 40000 CIR photography of Charlotte. The data layer does not attempt to identify every wetland in the town of Charlotte. It identifies only those interpretable from the photography.

The wetlands in this coverage are mainly palustrine Complexes. A smaller subset of the data define riverine and lacustrine wetland complexes (non-regulatory).
Single line streams are only included where the delineator added attribute data.

The wetlands in this coverage are not necessarily those regarded as
regulatory by the VT Water Resources Board. In some areas there were cases of mapping errors; where two overlays met and delineations were different on each acetate, and in areas of extreme topographic diversity where the rectification process created anomalies. In those cases the wetland boundaries were digitized by using ancilliary data layers as additional reference points.

See Feature Accuracy for details on the accuracy of the
source maps. This data layer is intended for planning and
informational use, to alert the public to the presence of
photo-interpreted wetlands. This data layer is not designed to be
used as sole criteria in any decision making process.
Questions about regulatory wetland location and use should be
referred to the ANR DEC Wetlands section, 244-6951.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The wetland boundaries are approximate due to the methods used to generate the original maps. Most boundaries are expected to be within several meters of their true locations. However, not all wetlands appear on this map, and some non-wetland areas may appear as wetlands.

Despite this, a number of wetlands that appear on this map do not appear on the VSWI maps, most of these being below 3 acres in size (often closed-canopy wetlands or open water).

For more information on the accuracy and use of the NWI
maps, contact the Wetlands Office of the Agency of
Natural Resources

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: William Sweeney and Leslie Morrissey
Publication_Date: 19990415
Publication_Time: unknown
Title: Wetlands of Charlotte, Vermont - Based on Aerial Photos Edition: 1.0
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Burlington, VT
Publisher: William Sweeney and Leslie Morrissey
Other_Citation_Details: charwet.met
Online_Linkage:
Source_Scale_Denominator: 40000; see Source Description
Type_of_Source_Media: acetate overlays of NHAP photography
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1992 - 1994
Time_of_Day: UnknownUnknown
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: charwet
Source_Contribution: NHAP colored aerial photos

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: Polygon
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 1174
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 5526
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.99996
Longitude_of_Central_Meridian: -072.500000
Latitude_of_Projection_Origin: +42.500000
False_Easting: 500,000
False_Northing: 0.000
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: 6378206.4
Denominator_of_Flattening_Ratio: 294.98
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Polygon
Entity_Type_Definition: Closed 2-D representation
Entity_Type_Definition_Source: UVM-SAL

Attribute:
Attribute_Label: CODE
Attribute_Definition:
Type of wetland area: COWARDIN classifications

Type (C), Width (16), Decimals (0)
Attribute_Definition_Source: overlays
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: CODE
Codeset_Source: overlays
Attribute_Units_of_Measure: Character
Beginning_Date_of_Attribute_Values: 19990415
Ending_Date_of_Attribute_Values: 19990415
Attribute_Value_Accuracy_Information:
Attribute_Value_Accuracy: CODE
Attribute_Value_Accuracy_Explanation:
The attribute is a multi-character-code containing Cowardin classifications.

See Cowardin classifications for detailed information.
Attribute:
Attribute_Label: NUMBER2
Attribute_Definition:
Unique identifier for each wetland type

Type (N), Width (8), Decimals (0)
Attribute_Definition_Source: UVM-SAL
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: NUMBER2
Enumerated_Domain_Value_Definition: This field is a unique ID number generated to aid in attribute coding.
Enumerated_Domain_Value_Definition_Source: UVM-SAL
Attribute_Units_of_Measure: Numeric
Beginning_Date_of_Attribute_Values: 19990415
Ending_Date_of_Attribute_Values: 19990415
Attribute:
Attribute_Label: ECOSYS
Attribute_Definition:
Defines broad Cowardin class
P-palustrine L-lacustrine R-riverine U-upland

Type (C), Width (8), Decimals (0)
Attribute_Definition_Source: UVM-SAL
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ECOSYS
Enumerated_Domain_Value_Definition:
P-palustrine L-lacustrine R-riverine U-upland
Enumerated_Domain_Value_Definition_Source: UVM-SAL
Attribute_Units_of_Measure: Numeric
Beginning_Date_of_Attribute_Values: 19990415
Ending_Date_of_Attribute_Values: 19990415

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Town of Charlotte Planning Commission
Contact_Organization: Town of Charlotte
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Charlotte Town Hall - Ferry Rd.
City: Charlotte
State_or_Province: Vt.
Postal_Code:
Country: USA
Contact_Voice_Telephone:
Contact_TDD/TTY_Telephone:
Contact_Facsimile_Telephone:
Hours_of_Service:
Resource_Description: charwet
Distribution_Liability: UVM-SAL make 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:
Non-digital_Form: unknown
Fees: unknown
Ordering_Instructions:unknown
Turnaround: unknown
Custom_Order_Process: unknown
Technical_Prerequisites: Arc/Info or ArcView software running on either a PC or host workstation.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1992-1994
Time_of_Day: UnknownUnknown
Metadata_Reference_Information:
Metadata_Date: 19990415
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leslie Morrissey
Contact_Organization: UVM-SAL
Contact_Address:
Address_Type: Mailing and Physical Address
Address: UVM - Aiken Center
City: Burlington
State_or_Province: Vt.
Postal_Code:
Country: USA
Contact_Voice_Telephone: 802/656-4280
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone:
Hours_of_Service: 9am-5pm
Metadata_Standard_Name: FGDC Content Standards for Digital Metadata
Metadata_Standard_Version: 19940608
Metadata_Time_Convention: Local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Handling_Description: No security considerations
Metadata_Security_Classification: Unclassified
Metadata_Security_Classification_System: N/A