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Connecticut Lake Bathymetry Polygon

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: State of Connecticut, Department of Environmental Protection (data compiler, editor, and publisher)
Publication_Date: 2003
Title:
Connecticut Lake Bathymetry Polygon
Edition: 2011
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Hartford, Connecticut USA
Publisher: State of Connecticut, Department of Environmental Protection
Other_Citation_Details:
The State of Connecticut, Department of Environmental Protection is the collector of the data (compiler), the creator and maintainer of the data layer (editor), and producer (publisher) of this information for use.
Online_Linkage: http://www.ct.gov/deep
Larger_Work_Citation:
Citation_Information:
Originator: Robert P. Jacobs
Originator: Eileen B. O'Donnell
Originator: William B. Gerrish
Publication_Date: 2002
Title:
A Fisheries Guide to Lakes and Ponds of Connecticut
Series_Information:
Series_Name: Connecticut Department of Environmental Protection Bulletin
Issue_Identification: DEP Bulletin 35
Publication_Information:
Publication_Place: Hartford, Connecticut
Publisher: Connecticut Department of Environmental Protection
Other_Citation_Details:
ISBN 0-942085-11-6
Online_Linkage: http://www.ct.gov/deep
Description:
Abstract:
Lake Bathymetry is a polygon feature-based layer that includes bathymetric (water depth) information for selected reservoirs, lakes, ponds and coves in Connecticut. The layer is based on information collected by the State of Connecticut, Department of Environmental Protection over a period of time using a variety of different techniques and equipment including manual depth soundings, use of an electronic depth sounder, use of a GPS receiver to locate the boat, and digitizing previously published bathymetry maps. Attribute information is comprised of codes to depict water depth, waterbody indentification, collection method, and to cartographically symbolize features on a map. Data is compiled at a variety of scales and resolutions, depending on the collection method used for a particular waterbody. This data is not updated, however bathymetry information for addtional waterbodies may become available and included in this layer as new information is collected. The Bathymetry layer includes bathymetry for the following Connecticut lakes, ponds and coves: Alexander Lake, Amos Lake, Anderson Pond, Aspinook Pond, Avery Pond, Babcock Pond, Ball Pond, Bantam Lake, Bashan Lake, Batterson Park Pond, Beach Pond, Beachdale Pond, Beseck Lake, Bigelow Pond, Billings Lake, Black Pond, Bolton Lake Lower, Bolton Lake Middle, Bolton Lake Upper, Bolton Notch Pond, Breakneck Pond, Burr Pond, Candlewood Lake, Cedar Lake, Chamberlain Lake, Chapman Pond, Colebrook River Reservoir, Congamond Lakes, Coventry Lake, Cresent Pond, Crow Point Cove, Crystal Lake, Dodge Pond, Dog Pond, Dooley Pond, Eagleville Lake, East Twin Lake, Frash Pond, Gardner Lake, Glasgo Pond, Gorton Pond, Great Hollow Pond, Green Falls Reservoir, Halls Pond, Hamburg Cove, Hampton Reservoir, Hatch Pond, Higganum Reservoir, Highland Lake, Holbrook Pond, Hopeville Pond, Horse Pond, Howells Pond, Jurovaty Pond, Keach Pond, Keeney Cove, Killingly Pond, Lake Hayward, Lake Housatonic, Lake Kenosia, Lake Lillinonah, Lake Of Isles, Lake Saltonstall, Lake Wintergreen, Lake Zoar, Lantern Hill Pond, Leonard Pond, Little Pond, Long Pond, Maltby Lake #1, Maltby Lake #2, Maltby Lake #3, Mamanasco Lake, Mansfield Hollow Reservoir, Mashapaug Lake, McDonough Lake, Messerschmidt Pond, Millers Pond, Mohawk Pond, Mono Pond, Moodus Reservoir Lower, Moodus Reservoir Upper, Moosup Pond, Morey Pond, Mount Tom Pond, Mudge Pond, North Farms Reservoir, Norwich Pond, Pachaug Pond, Park Pond, Pataconk Reservoir, Pataganset Lake, Pickerel Lake, Pine Acres Lake, Powers Lake, Quaddick Reservoir Lower, Quaddick Reservoir Middle, Quaddick Reservoir Upper (Stump Pond), Quinebaug Lake, Quonnipaug Lake, Rainbow Reservoir, Red Cedar Lake, Rogers Lake, Roseland Lake, Salmon Cove, Saugatuck Reservoir, Shenipsit Lake, Silver Lake, South Spectacle Lake, Squantz Pond, Stillwater Pond, Tyler Lake, Uncas Lake, Waramaug Lake, West Branch Reservoir, West Hill Pond, West Side Pond, West Thompson Reservoir, West Twin Lake, Wethersfield Cove, Winchester Lake, Wonoscoponuc Lake, Wood Creek Pond, Wrights Cove, and Wyassup Lake. The 2011 Edition added the following lakes: Allen Brook Pond, Ashland Pond, Barber Pond, Butterworth Dam, Day Pond, Gay City Pond, Lost Pond, Schreeder Pond, Twin Lakes North, Twin Lakes South, Williams Pond.
Purpose:
This dataset displays the bathymetry (water depth) of selected lakes in Connecticut.  Use this layer with hydrography or other waterbody datalayers to display water depth.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1959
Ending_Date: 2002
Currentness_Reference:
ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.542601
East_Bounding_Coordinate: -71.777815
North_Bounding_Coordinate: 42.062240
South_Bounding_Coordinate: 41.165460
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Bathymetry
Theme_Keyword: Depth contour
Theme_Keyword: Reservoir
Theme_Keyword: Lake
Theme_Keyword: Pond
Theme_Keyword: Cove
Place:
Place_Keyword_Thesaurus: U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (Federal Information Processing Standard 5-2): Washington, DC, National Institute of Standards and Technology.
Place_Keyword: Connecticut
Place_Keyword: CT
Place:
Place_Keyword_Thesaurus: U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
Place_Keyword: United States of America
Place_Keyword: USA
Access_Constraints: None. The data is in the public domain and may be redistributed.
Use_Constraints:
No restrictions or legal prerequisites for using the data. Although this data set has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata. When printing this data on a map or using it in a software application, analysis, or report, please acknowledge the State of Connecticut, Department of Environmental Protection as the source for this information. 
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Connecticut Department of Environmental Protection
Contact_Person: William Gerrish
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106-5127
Country: USA
Contact_Voice_Telephone: 860-424-3474
Contact_Facsimile_Telephone: 860-424-4070
Contact_Electronic_Mail_Address: dep.gisdata@ct.gov
Hours_of_Service: Monday to Friday, 08:30 to 16:30 Eastern Tiime
Browse_Graphic:
Browse_Graphic_File_Name: http://www.cteco.uconn.edu/metadata/dep/browsegraphic/lakebathymetrypolylinefullview.gif
Browse_Graphic_File_Description:
Full view of lake bathymetry polygon and line features
Browse_Graphic_File_Type: GIF
Browse_Graphic:
Browse_Graphic_File_Name: http://www.cteco.uconn.edu/metadata/dep/browsegraphic/lakebathymetrypolylinedetailview.gif
Browse_Graphic_File_Description:
Detailed view of lake bathymetry polygon and line features.
Browse_Graphic_File_Type: GIF
Browse_Graphic:
Browse_Graphic_File_Name: http://www.cteco.uconn.edu/metadata/dep/browsegraphic/lakebathymetrypolydetailview.gif
Browse_Graphic_File_Description:
Detail view of lake bathymetry polygon features
Browse_Graphic_File_Type: GIF
Data_Set_Credit:
Bruce Hunter and Tom Nosal of the State of Connecticut, Department of Environmental Protection developed the techniques and procedures for collecting, processing and preparing bathymetry information collected in the field for use and interpretation. Over a period of time, they systematically created detailed datasets of water depth information using a variety of different techniques. For example, they prepared point data sets of water depth information designed for use with mapping software that generates depth contours. Bill Gerrish, also of the State of Connecticut Department of Environmental Protection processed and edited these detailed datasets of water depth information in order to generate water depth contours for individual lakes and assembled this information into a single, statewide layer.
Native_Data_Set_Environment:
These data are maintained by the State of Connecticut using ArcGIS software developed by Environmental Systems Research Institute (ESRI) in a Microsoft Windows operating system environment.
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The Lake Bathymetry layer retains the feature types and information identified by the State of Connecticut, Department of Environmental Protection. This information was obtained from the previously published bathymetry maps and data. All attributes have valid values. Values are within defined domains. The WB_NO and DEPTH_FT attribute values were assigned to line features through a combination of automated and manual processes. The accuracy test for the WB_NO and DEPTH_FT attributes was conducted by inspecting paper check plots or interactive displays of the data on a computer graphic system by symbolizing, labeling and selecting depth contours by WB_NO and DEPTH_FT values. The value for the DEPTH_FT attribute assigned with open water (polygon) features is based on the depth of the bounding water contour (line) features. The estimated DEPTH_FT value for a water polygon is half the difference between the shallowest and deepest contour. For example, a water polygon bound by a shoreline feature (zero depth) and depth contour of 4 feet is assigned a DEPTH_FT value of 2 feet. DEPTH_FT attribute values for polygon features were manually assigned. AV_LEGEND is a broad classifications of Lake Bathymetry line features . The WBNAME, WBTOWN, LAKE_NO, BAY_NO, METHOD_COD, and DATADATE were not manually entered. These additional fields were populated by joining both the line and polygon feature attribute tables to a lookup data table with WB_NO as the relate key field. This lookup table contained this information for each waterbody. The METHOD value was populated by joining to a lookup table with METHOD_COD as a relate key. The ACREAGE (area in acres) field was automatically calculated for each polygon feature based on computer generated feature area in square feet. 
Logical_Consistency_Report:
Polygon features conform to the following topological rules. Polygons are single part. There are no duplicate polygons. Polygons do not self overlap. Polygons do not overlap other polygons. Polygons are bound by lines. Line features conform to the following topological rules. Lines are single part. There are no duplicate lines. Lines do not self overlap. Lines do not overlap other lines. Lines intersect only at nodes, and nodes anchor the ends of all lines. Lines do not overshoot or undershoot other lines they are supposed to meet and intersect. The tests of logical consistency were performed by the State of Connecticut using ESRI ArcInfo software to maintain feature topology in ArcInfo coverage format. The data is topologically clean. The ArcInfo Clean function was repeatedly used following edits to verify topology and enforce a minimum distance between vertices of 47.927 feet (fuzzy tolerance) and a minimum allowed overshoot length of 0 feet (dangle length). 
Completeness_Report:
The completeness of the data reflects the availability of digital information at the time the layer was published. 
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The horizontal positional accuracy of this data is unknown. 
Lineage:
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Spatial_Data_Organization_Information:
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: 1901
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
Lambert Conformal Conic
Standard_Parallel: 41.200000
Standard_Parallel: 41.866667
Longitude_of_Central_Meridian: -72.750000
Latitude_of_Projection_Origin: 40.833333
False_Easting: 999999.999996
False_Northing: 499999.999998
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000250
Ordinate_Resolution: 0.000250
Planar_Distance_Units: survey feet
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Resolution: 1.000000
Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Connecticut Lake Bathymetry Polygon
Entity_Type_Definition:
Lake Bathymetry represented as polygon features
Entity_Type_Definition_Source:
of Connecticut, Department of Environmental Protection
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.
Attribute:
Attribute_Label: BATHYP_COD
Attribute_Definition:
Bathymetry Polygon Code - Numeric values that identify bathymetry polygon feature types. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
Water
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition:
Island
Enumerated_Domain:
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition:
Marsh
Attribute:
Attribute_Label: BATHY_POLY
Attribute_Definition:
Bathymetry Polygon Type. Text values that correspond to numeric BATHYP_COD attribute values. BATHY_POLY is the English language equivalent of (decodes) the BATHYP_COD field. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Text Value
Attribute:
Attribute_Label: AV_LEGEND
Attribute_Definition:
ArcView Legend. A text field for symbolizing different feature types on a map. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Text Value
Attribute:
Attribute_Label: WB_NO
Attribute_Definition:
Waterbody Number - ID number of waterbody (lake, cove, etc) in this layer for which there is bathymetry data. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Numeric Value
Attribute:
Attribute_Label: WBNAME
Attribute_Definition:
Waterbody Name - Name of the waterbody as listed in the publication entitled, A Fisheries Guide to the Lakes and Ponds of Connecticut. Some waterbodies my not be listed in this publication. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Text Value
Attribute:
Attribute_Label: WBTOWN
Attribute_Definition:
Waterbody Town - The names of one or more towns the waterbody is located in. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Text Value
Attribute:
Attribute_Label: LAKE_NO
Attribute_Definition:
Lake Number - ID number of named lake as identified in the Hydrography layer, also published by the State of Connecticut, Department of Environmental Protection. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Numeric Value
Attribute:
Attribute_Label: BAY_NO
Attribute_Definition:
Bay Number - ID number of named bay or cove as identified in the Hydrography layer, also published by the State of Connecticut, Department of Environmental Protection 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Numeric Value
Attribute:
Attribute_Label: METHOD_COD
Attribute_Definition:
Data Capture Method Code - A numeric code used to denote the general method used in the field to collect water depth information. Different methods were used, depending on techniques available at the time information was collected in the field. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:
Manual soundings
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition:
Depth finder
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition:
GPS and depth finder
Attribute:
Attribute_Label: METHOD
Attribute_Definition:
Data Capture Method 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
See Enumerated Domain Value Definitions for METHOD_COD attribute.
Attribute:
Attribute_Label: DATADATE
Attribute_Definition:
Data Capture Date - Year bathymetry data was captured (collected) in the field 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
4 digit numeric value corresponding to a year
Attribute:
Attribute_Label: DEPTH_FT
Attribute_Definition:
Open Water Depth in Feet - Estimated depth of the water (polygon) based on the depth of the bounding water contour (line) features. The estimated DEPTH_FT value for a water polygon is half the difference between the shallowest and deepest contour. For example, a water polygon bound by a shoreline feature (zero depth) and depth contour of 4 feet is assigned a DEPTH_FT value of 2 feet. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Numeric Value
Attribute:
Attribute_Label: ACREAGE
Attribute_Definition:
Calculated area of polygon feature in acres. Note, ACREAGE values are not automatically updated after modifying feature geometry (shape). Values must be recalculated after features are edited, simplified, generalized, clipped, dissolved, etc. 
Attribute_Definition_Source:
State of Connecticut, Department of Environmental Protection 
Attribute_Domain_Values:
Unrepresentable_Domain:
Numeric Value
Attribute:
Attribute_Label: SHAPE
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: SHAPE.area
Attribute:
Attribute_Label: SHAPE.len
Overview_Description:
Entity_and_Attribute_Overview:
Includes bathymetric information such as depth contours, shoreline delineations and depths of areas of open water between contours. Information encoded about these features includes depth, waterbody name, data collection method, and a standard cartographic symbology classification scheme for classifying features on a map. Use the WB_NO field to uniquely identify waterbodies. Use the AV_LEGEND attribute to symbolize features by type on a map. Use the DEPTH_FT line attribute to label depth contours on a map. Use the DEPTH_FT polygon attribute to gradationally shade (symbolize) areas of water according to depth on a map. 
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person:
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106-5127
Country: USA
Contact_Voice_Telephone: 860-424-3540
Contact_Facsimile_Telephone: 860-424-4058
Contact_Electronic_Mail_Address: dep.gisdata@ct.gov
Resource_Description: Connecticut Lake Bathymetry Polygon
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: ArcGIS 9.3.1
File_Decompression_Technique: Zip File
Transfer_Size: 71.712
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://www.ct.gov/deep
Fees: An online copy of the data may be accessed without charge.
Custom_Order_Process:
The data distributor does not provide custom GIS analysis or mapping services. Data is available in a standard format and may be converted to other formats, projections, coordinate systems, or selected for specific geographic regions by the party receiving the data. 
Technical_Prerequisites:
Geographic information sytem (GIS), computer-aided drawing or other mapping software is necessary to display, view and access the information.
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Metadata_Reference_Information:
Metadata_Date: 20111208
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Bill Gerrish, Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Contact_Electronic_Mail_Address: dep.gisdata@ct.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None. No restrictions or legal prerequisites for accessing the metadata.
Metadata_Use_Constraints:
None. No restrictions or legal prerequisites for using the metadata after access is granted.
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: None
Metadata_Security_Handling_Description:
No restrictions for handling the metadata.
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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