Hydrography Network - Connecticut
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Connecticut Department of Environmental Protection
- Publication_Date: 2000
- Title: Hydrography Network - Connecticut
- Geospatial_Data_Presentation_Form: vector digital data
- Online_Linkage:
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<http://magic.lib.uconn.edu/magic_2/vector/37800/hydrographynetworkct_37800_0000_1984_s24_ctdep_1_shp.zip>
- Description:
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- Abstract:
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This is a 1:24,000-scale datalayer of line features extending to the limit of all USGS quadrangles that cover the State of Connecticut. It is a single-line model of Connecticut's hydrography indicating hydrologic connectivity and direction of flow. Since this datalayer was derived from the hydrography datalayer based the U.S. Geological Survey Digital Line Graph Files (DLG) for the 1:24,000 scale Connecticut quadrangle maps published between 1969 and 1984, it may not reflect current surface water geography.
The network datalayer was developed from several separate elements. It is a combination of 1) single-line natural perennial or intermittant rivers and streams from the hydrography datalayer, 2) computer generated centerlines for the lakes and rivers that appear as polygons on the same hydrography datalayer, 3) digitized lines that provide hydrologic connectivity through marshes, where water is channeled underground, or where for any reason the actual stream channel does not appear on the USGS quadrangle but can be reasonably inferred. It does not include man-made features such as aqueducts or canals, centerlines for ponds shown without a single-line stream connection (isolated ponds) or for marsh headwaters. For lake headwaters the line begins at the center of the far shore. Wherever the drainage pattern formed a loop (i.e. a stream that forks as it enters a lake or a braided stream) a reasonable path was selected and the extra lines omitted.
The purpose of this network is to represent the natural surface water flow throughout Connecticut in a datalayer suitable for modeling. Within each major drainage basin the surface water is connected and all lines are oriented from upstream to downstream. Hydrography in this form is new at DEP. It is provided as a first step toward hydrologic modeling and analysis.
- Purpose: Data are intended for reference purposes only.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 1969-1984, depending on quad
- Currentness_Reference: publication date
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -73.731073
- East_Bounding_Coordinate: -71.749511
- North_Bounding_Coordinate: 42.125103
- South_Bounding_Coordinate: 40.958369
- Keywords:
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- Theme:
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- Theme_Keyword: Hydrography network
- Theme_Keyword: U.S. Geological Survey Digital Line Graph Files
- Place:
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- Place_Keyword: Connecticut
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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Map and Geographic Information Center, Homer Babbidge Library, University of Connecticut
- Contact_Person: Map Librarian
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 369 Fairfield Way
- City: Storrs
- State_or_Province: Connecticut
- Postal_Code: 06269
- Country: USA
- Contact_Voice_Telephone: 860-486-4589
- Contact_Electronic_Mail_Address: magic@uconn.edu
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- Process_Date: 20090519
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- Latitude_Resolution: 0.000000
- Longitude_Resolution: 0.000000
- Geographic_Coordinate_Units: Decimal degrees
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- Horizontal_Datum_Name: D_WGS_1984
- Ellipsoid_Name: WGS_1984
- Semi-major_Axis: 6378137.000000
- Denominator_of_Flattening_Ratio: 298.257224
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- Entity_Type_Label: hydrographynetworkct_37800_0000_1984_s24_ctdep_1_shp_wgs84
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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Map and Geographic Information Center, Homer Babbidge Library, University of Connecticut
- Contact_Person: Map Librarian
- Contact_Position: Map Librarian
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 369 Fairfield Way
- City: Storrs
- State_or_Province: Connecticut
- Postal_Code: 06269
- Country: USA
- Contact_Voice_Telephone: 860-486-4589
- Contact_Electronic_Mail_Address: magic@uconn.edu
- Resource_Description: Downloadable Data
- Distribution_Liability:
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MAGIC is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. MAGIC endorses but does not support secondary distribution of this data.
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- Metadata_Date: 20110721
- Metadata_Review_Date: 2009
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Map and Geographic Information Center, Homer Babbidge Library, University of Connecticut
- Contact_Person: Map Librarian
- Contact_Position: Map Librarian
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 369 Fairfield Way
- City: Storrs
- State_or_Province: Connecticut
- Postal_Code: 06269
- Country: USA
- Contact_Voice_Telephone: 860-486-4589
- Contact_Electronic_Mail_Address: magic@uconn.edu
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Generated by mp version 2.9.6 on Thu Jul 21 13:09:58 2011