Hydrography of Tompkins County New York (Shapefile : 2001)

Dataset Identification:

Resource Abstract:
The Tompkins County Planning Department utilized inter-departmental mapping expertise of the Tompkins County Information Technology Services GIS Division to produce a data set of surface water features for Tompkins County, New York. The need for this data set has been identified by various county departments, local municipal agencies, and other not-for-profit organizations.
Citation
Title Hydrography of Tompkins County New York (Shapefile : 2001)
publication  Date   2001-01-01
cited responsible party - publisher
organisation Name  Tompkins County IT/GIS Program
Contact information
Address
, Tompkins County
cited responsible party - originator
organisation Name  Tompkins County Planimetric Project
cited responsible party -
organisation Name  
Contact information
Linkage for online resource
URL: http://cugir.mannlib.cornell.edu/bucketinfo.jsp?id=7497
Keywords:
Theme keywords (theme):
Hydrography
Rivers
Lakes
Ponds
Hydrology
Reservoirs
thesaurus name >
Title LCSH
Location keywords:
Fall Creek (Cayuga County and Tompkins County, N.Y.)
Six Mile Creek (N.Y.)
Cascadilla Creek (N.Y.)
New York (State)
Tompkins County (N.Y.)
Finger Lakes Region (N.Y.) -- Maps.
Cayuga Lake (N.Y.) -- Maps.
Ithaca (N.Y.) -- Maps.
Trumansburg (N.Y.) -- Maps.
Groton (N.Y.) -- Maps.
Dryden (N.Y.) -- Maps.
Newfield (N.Y.) -- Maps.
Freeville (N.Y.) -- Maps.
Cayuga Heights (N.Y.) -- Maps.
Lansing (Tompkins County, N.Y.) -- Maps.
Danby (N.Y. : Town)
Caroline, N.Y. (Township)
Enfield (N.Y.)
Ulysses, N.Y. (Township) -- Maps.
thesaurus name >
Title LCSH
purpose:
To provide a complete network of streams within the county boundaries and to add enough basic attributes that a fundamental degree of categorization would be achieved. To provide a stream layer for map production and to provide a framework for relating streams to external databases.
Resource language:  eng; USA
Resource progress code:  completed
Resource Maintenance Information
maintenance or update frequency:  asNeeded
Constraints on resource usage:
Constraints
Use limitation statement:
Cornell University provides these geographic data "as is." Cornell University makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. Cornell University further makes no warranty either expressed or implied, regarding the condition of the product or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these files have been processed successfully on computers at Cornell University, no warranty is made by Cornell University regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.
Constraints on resource usage:
Legal Constraints
use constraint:  otherRestrictions
Other constraints
Use Constraints: The following statement must be included with any products that use or are derived from this data set: Data contained in this product was originally produced by the Tompkins County ITS GIS Division and may not be reproduced or redistributed without the express written consent of the originator. The originator does not warrant the accuracy or completeness of the information portrayed by the data. Please use data at the scale in which it was intended to be used.
Constraints on resource usage:
Legal Constraints
Access Constraints  otherRestrictions
Other constraints
Access Constraints: None
Spatial representation type code:  vector
Processing environment:  Native Dataset Environment: PATH: /DATA/ARCINFO/COUNTY/NYSP/PHYSICAL/HYDROGRAPHY SOFTWARE: WindowsNT 4.0 x86, Arc/Info Single Precision Coverage
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude  -76.7
eastBoundLongitude  -76.2375
northBoundLatitude  42.6375
southBoundLatitude  42.25
Temporal Extent
1999-11-01 2001-05-01
Additional information on resource:
Data originating from the Tompkins County 1991-92 Planimetric project at a scale of 1:4800 was organized into watersheds and edited to complete the connectivity of stream segments and networks. Identified gaps between arcs due to the original data capture errors were corrected with the use of secondary data sources. In locations where stream paths did not exist through water bodies and wetlands, additional segments, or artificial paths were added through these polygons. Approximate stream centerlines were also delineated in locations where larger streams were identified only by two arcs representing stream edges. In addition, all centerline segment directional orientation was altered to a downstream direction. Paper Maps can be ordered directly from Tompkins County IT/GIS. Attribute information can be found is the following attached files :Hydrology_attributes.xls and a HYDROLOGY_ATTRIBUTES.txt file
Credits:
Tompkins County ITS GIS Division
point of contact - pointOfContact
individual Name Greg Potter
individual Name Svetla Borovska
individual Name Steve Horn
organisation Name  Tompkins County ITS GIS Division
position Name GIS
Contact information
Telephone
Voice (607) 274-5418
Fax (607) 274-5420
Address
128 East Buffalo Street, Ithaca, New York, 14850 Country USA
electronic Mail Address gis@tompkins-co.org
hoursOfService M-F 8:30 a.m. to 4:30 p.m.
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Vector spatial representation information

Geometric Objects
geometric Object Type  curve
geometric Object Count  21700
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Coverage description

Type of coverage content 
Cell value attribute description:  
Band
descriptor artificial path - an abstract line representing a stream passing through lakes, reservoirs, ponds, wetlands
sequence Identifier
name Apt -- More attribute information can be found is the following attached files :Hydrology_attributes.xls and a HYDROLOGY_ATTRIBUTES.txt file
Band
descriptor Bridges, culverts, and storm drains
sequence Identifier
name Bridge
Band
descriptor Stream perminancy determined form USGS 7.5 min. quadrangle map
sequence Identifier
name Class
Band
descriptor Any relevant information that does not conveniently fit into any other existing attribute field.
sequence Identifier
name Comments
Band
descriptor A unique stream segment identification number from National Hydrological Dataset (NHD).
sequence Identifier
name Commonid
Band
descriptor New York State Department of Environmental Conservation Water Index Number is an alphanumeric water feature identification system used by New York State agencies. In the Hydrology Data set the I.D. is applied only to the stream reaches represented by line types "s", "scl", and "ap".
sequence Identifier
name Dec-win
Band
descriptor Arc length (Internal Software Attribute, in Map Units)
sequence Identifier
name Length
Band
descriptor Type of water feature
sequence Identifier
name Ltype
Band
descriptor Man made features assigned where applicable to arcs with line type attributes "s", "scl", or "ap".
sequence Identifier
name Mmchannel
Band
descriptor For Line types "s", "scl", and "ap" the names of streams are provided as they appear on USGS Quadrangle maps. A few local stream names were added when requested.
sequence Identifier
name Name
Band
descriptor Priority Waterbodies indentification number from New York State Department of Environmental Conservation 1998 303(d) List of the Clean Water Act. Priority waterbodies are identified so that priority effort will be given to developing solutions to water quality problems. Assigned to applicable streams with a line type attribute of "s", "scl", or "ap".
sequence Identifier
name Priorityh2o
Band
descriptor A water quality code ,used by NYS/DEC, assigned to all arcs in the county hydrography dataset with a line type equal to "s", "scl", or "ap" that are also part ot the NYS/DEC Water Index Number data set.. Each stream segment that is coded in this data set with an entry in the protected field has some level of "protected" status.
sequence Identifier
name Protected
Band
descriptor Origin of arc data or most accurate source used to position a stream arc segment where a stream is known to exist
sequence Identifier
name Source
Band
descriptor An editing status field.
sequence Identifier
name Status
Band
descriptor Strahler Index number used to rank relative stream size for all arcs in the county hydrography dataset with a line type equal to "s", "scl", or "ap". This classification system begins with smaller numbers representing headwater streams and progressing to larger numbers downstream as more tributaries enter. This is a standard in simple stream classification first set forth by R.E. Horton and A.E. Strahler.
sequence Identifier
name Strindex
Band
descriptor A unique identifier assigned to all arcs in the county hydrography dataset with a line type equal to "s", "scl", or "ap". This identifier includes information about the watershed that it is a part of, it's relative location in that watershed, and whether or not it is included in the DEC, NHD, or Priority Water Bodies datasets.-Confluence to confluence reaches are consecutively lettered with lower case letters, tributaries are consecutively numbered, and capital letters are used to signify its inclusion in another data set. -The TCID code for each stream reach will begin with the name of the watershed that it is from. -Beginning at the confluence of the main stream, each tributary of that main stream is numbered consecutively as you progress up stream. -Tributaries to each of these tributaries will be consecutively numbered in an upstream direction until all tributaries are numbered. -This process of consecutively numbering tributaries of a stem tributary continues until all tributaries have received a number. - Reaches defined by the confluence of two tributaries will be consecutively lettered beginning at the mouth of the stream and progressing upstream, using lower case letters, beginning with "a" and if necessary starting over and progressing through "aa, ab" until you reach its headwater reach. This process is repeated for consecutive reaches of each tributary until all confluence to confluence reaches have received a letter code. -For streams with headwaters outside of Tompkins County and with a confluence in Cayuga Lake, the coding system ends at the county boundary. -For streams with their headwaters in the county that eventually exit across the county boundary, coding for the portions outside the county boundary uses the NYS/DEC Water Index Number map to determine reaches. As the coding proceeds upstream past the county boundary the County Hydrography is used to identify reaches for coding. -If a reach is included in the state DEC stream data set, then the TCID will end in "S". -If a reach is included in the NHD, then the Tompkins County reach code will end with "N". -If a reach is included in the state Priority Water Bodies Inventory list, then the TCID for that reach will end in "P". -If a reach is included in both the DEC and the NHD data sources, then the TCID will end in "SN". ("SNP " will be used when a reach is included in all three data sources.) -If in the future a tributary is added to the county stream data set, it is given a decimal equivalent to its relative distance upstream to the next tributary. (ie. If a tributary were added approximately half way between tributaries 3 and 4, then the new tributary number would be 3.5) - When a reach is divided by the addition of a new tributary, a .1 and .2 decimal is added to the new reaches. .1 is added to the downstream reach and .2 is added to the upstream reach. (ie. If reach Salmon-f were divided the resulting reaches would be Salmon-f.1 and Salmon-f.2)
sequence Identifier
name Tcid
Band
descriptor The name of watershed is provided for all arcs. Watersheds are typically defined by a line that divides two adjacent stream systems or groups of smaller streams that flow into Cayuga Lake. A coverage exists that represents the watershed deliniations within Tompkins County and this coverage is the basis for the Hydrography watershed divisions.
sequence Identifier
name Watershed
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Content information: feature catalog description

Included With Dataset  true
Feature Types  
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Scope of quality information
scope level  dataset
Resource lineage description
source
source description  Source Contribution: Source information included in the "Source" field of the Attribute tableSource Type
source citation
Title Unique Natural Areas of Tompkins County, 1999 Inventory
publication  Date   1999-01-01
Edition 2nd
other Citation Details  This is an extensive revision of the "Unique Natural Areas of Tompkins County, 1990 Inventory". One hundred and ninety-two Unique Natural Areas are inventoried. Detailed information about each Unique Natural Area (site description, reason for selection, rating, protection status, water resources, physical characteristics, soils, conservation comments, cover type, vegetation/animal description, rare flora, and rare fauna) and an accurate site map of the UNA boundary is provided for each site.
cited responsible party - originator
organisation Name  Tompkins County Environmental Management Council, Tompkins County Planning Department, Cornell Plantations
Resource extent
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description  Varies, depending on source of Hydography data (Planimetric Base Map, DOQQ s, aerial photo, raw conversion from paper maps, etc). The positional accuracy of each individual arc is determined by the source and status data for that arc found in the fields "Source" and "Status". More than 65% of the the data set tagged with the hyd and plan source attributes is limited to the accuracy of the 1991 Tompkins County Planimetric Base Map series. The centerlines and artificial paths (Ltype = scl and Ltype = ap) represents another 14% and the accuracy of these arcs is much less significant positionally since centerlines and artificial paths are only intended to represent an abstract paths of a streams passing through a lakes, reservoirs, ponds, wetlands. Arcs with a Source code other than "hyd" or an Ltype code of "ap" or "scl" are generally accurate to within plus or minus 30 feet.
Completeness Commission
evaluation Method Description  For all stream segments that are part of the National Hydrography Dataset ("Comonid"), the New York State Department of Environmental Conservation's Water Index Number ("WIN") maps, regulation numbers (" Apt"), and the 303(d) list of Priority Water Bodies ("Priorityh2o") this data can be considered complete for Tompkins County. Because of the changing nature of stream flow and the gray area defining intermittent streams it would not be responsible to suggest that the data is complete for streams on the smaller end of the size continuum. We have been careful to include as many data sources as possible to incorperate them into the Hydrography dataset.
Completeness Omission
evaluation Method Description  For all stream segments that are part of the National Hydrography Dataset ("Comonid"), the New York State Department of Environmental Conservation's Water Index Number ("WIN") maps, regulation numbers (" Apt"), and the 303(d) list of Priority Water Bodies ("Priorityh2o") this data can be considered complete for Tompkins County. Because of the changing nature of stream flow and the gray area defining intermittent streams it would not be responsible to suggest that the data is complete for streams on the smaller end of the size continuum. We have been careful to include as many data sources as possible to incorperate them into the Hydrography dataset.
ConceptualConsistency
measure Description  

Resource distribution information

Distributor
distributor contact - distributor
organisation Name  Albert R. Mann Library
Contact information
Telephone
Voice 607-255-5406
Address
Cornell University, Ithaca, New York, 14853
electronic Mail Address mann_ref@cornell.edu

Metadata data stamp:  2002-12-15
Resource Maintenance Information
date of next update:  2003-01-15
maintenance or update frequency:  annually
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version ) using the 2012-06-20T17:21:00 version of the FGDC RSE to ISO 19115-2 transform.
notes: Last Metadata Review Date: 2004-06-22
Metadata Constraints
Legal Constraints
Access Constraints  otherRestrictions
Other constraints
Metadata Access Constraints: None
Metadata Constraints
Legal Constraints
Access Constraints  otherRestrictions
Other constraints
Metadata Use Constraints: None
Metadata contact - pointOfContact
individual Name Greg Potter
organisation Name  Tompkins County ITS GIS Division
position Name GIS Project Leader
Contact information
Telephone
Voice (607) 274-5418
Fax (607) 274-5420
Address
128 East Buffalo Street, Ithaca, New York, 14850 Country USA
electronic Mail Address gis@tompkins-co.org
hoursOfService M-F 8:30 a.m. to 4:30 p.m.
Metadata scope code  dataset
Metadata language  eng; USA
Metadata character set encoding:   utf8
Metadata standard for this record:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
standard version:  ISO 19115-2:2009(E)
Metadata record identifier:  c1be9868-d7a2-432e-9d5f-8170c3794b15

Metadata record format is ISO19139-2 XML (MI_Metadata)