hydro_ln

Coordinate system: NAD 1983 HARN StatePlane Florida North FIPS 0903 Feet

Theme keywords: inlandWaters, environment, hydrography , environment, inlandWaters

Abstract: This data represents the outlines of all hydrography polyline features visible in stereo aerial photography. This data is a result of a change detection process designed to update the TLCGIS landbase data layers. The hydro data was originally compiled countywide in 1996 from analog panchromatic stereo aerial photography. The base scale of the photography was 1:7960. This data was updated using a change detection process in 2001. Again, the source photography was 1:7960 scale panchromatic analog stereo photogrphy. In 2005 an update was performed for 164 square miles of northeastern Leon County in February, 2005. The aerial imagery was acquired with the Merrick Digital Airborne Camera System (DACS). The ground sample distance (GSD) of the imagery is 1-foot. An update was performed on 161 square miles of southern Leon County in February, 2006. Another update was performed on 182 square miles of northwestern Leon County in February, 2007. The latest update was performed on 170 sqare miles of Leon County in February, 2008.

FGDC and ESRI Metadata:

Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.

Identification Information:


Citation:
Citation information:
Originators: Merrick and Company - Denver, Colorado


Title:
hydro_ln


Publication date: 20070101
Geospatial data presentation form: vector digital data


Publication information:
Publisher: Tallahassee/Leon County GIS

Publication information:
Publication place: Leon County, Florida

Online linkage: http://www.tlcgis.org


Description:
Abstract:
This data represents the outlines of all hydrography polyline features visible in stereo aerial photography. This data is a result of a change detection process designed to update the TLCGIS landbase data layers. The hydro data was originally compiled countywide in 1996 from analog panchromatic stereo aerial photography. The base scale of the photography was 1:7960. This data was updated using a change detection process in 2001. Again, the source photography was 1:7960 scale panchromatic analog stereo photogrphy. In 2005 an update was performed for 164 square miles of northeastern Leon County in February, 2005. The aerial imagery was acquired with the Merrick Digital Airborne Camera System (DACS). The ground sample distance (GSD) of the imagery is 1-foot. An update was performed on 161 square miles of southern Leon County in February, 2006. Another update was performed on 182 square miles of northwestern Leon County in February, 2007. The latest update was performed on 170 sqare miles of Leon County in February, 2008.

Purpose:
To provide members of the Tallahassee/Leon County GIS Interlocal group with base data to use in their maps, projects and business processes.

Time period of content:
Time period information:
Single date/time:
Calendar date: 20010220

Currentness reference:
ground condition

Status:
Progress: Complete
Maintenance and update frequency: Annually

Spatial domain:
Bounding coordinates:
West bounding coordinate: -84.395093
East bounding coordinate: -84.074873
North bounding coordinate: 30.624129
South bounding coordinate: 30.27344

Keywords:
Theme:
Theme keywords: inlandWaters, environment, hydrography
Theme keyword thesaurus: None

Theme:
Theme keywords: environment, inlandWaters
Theme keyword thesaurus: ISO 19115 Topic Categories

Place:
Place keywords: Leon County
Place keyword thesaurus: None

Place:
Place keywords: Tallahassee, Leon County, Florida
Place keyword thesaurus: None

Place:
Place keywords: Florida
Place keyword thesaurus: None

Access constraints: Public
Use constraints:
Not for use at scales greater than 1:1,200. Not intended to provide locations of wetland areas in Leon County. Only major visible swamp features were mapped in this coverage. Wetlands areas for Leon County can be found in the coverage /edb/esa/wetland.

Point of contact:
Contact information:
Contact organization primary:
Contact person: Greg Mauldin
Contact organization: Tallahassee-Leon County GIS
Contact position: GIS Project Manager


Contact address:
Address type: unknown
Country: US

Contact voice telephone: 850-606-5504
Contact facsimile telephone: 850-606-5501


Contact electronic mail address: maulding@leoncountyfl.gov


Hours of service: 8:00 to 5:00 M-F Eastern Standard Time



Native data set environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552


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Data Quality Information:


Logical consistency report:
ESRI feature type: Simple, Geometry: Polyline, Topology:

Completeness report:
Data set has been visually inspected. All data produced strives to meet National Mapping Accuracy Standards (NMAS).

Lineage:
Source information:
Source scale denominator: 1.2
Type of source media: hardDisk

Source time period of content:
Time period information:
Single date/time:
Calendar date: 20060220

Source currentness reference:
ground condition

Process step:
Process description:
Hydrographic features were initially compiled using Photogrammetric stereo-compilation techniques and Aerial Photography acquired in January 2001. This coverage is one of the planimetric data sets compiled as part of the Tallahassee-Leon County GIS Inter-local 2001 Landbase Update Project. The primary contractor for this project was Merrick and Company of Denver, Colorado. The project was conducted in two phases. The phase 1 area is an irregular shaped area which includes the Tallahassee City Limits south to Woodville and the southern boundary of Leon County. The Phase 2 area includes the remaining portion of Leon County. The limits of the Phase 1 area are shown in the Arc/Info Coverage ADRphase1 under the system directory A:/edb/base01 @. The Phase 1 area was flown at an altitude of 3960 feet producing a nominal photo scale of 1:7920 (1" = 660 feet). The Phase 2 area was flown at a higher altitude of 7920 feet producing a nominal photo scale of 1:15840 (1" = 1320 feet). The feature set includes rivers, streams, lakes, swamps, and headwalls. Streams less than 10ft wide are represented with a single line down the middle of the stream. Streams wider than 10 ft are represented with a line along the water edge on each side of the stream. Where hydro features hidden from view (under road, etc), the line feature is split and coded as hidden. Merrick & Company acquired true-color stereo digital imagery for 160 square miles of Leon County in February, 2006. The GSD was 1 foot. Exterior orientation was accomplished using direct georeferencing techniques. The latest update was performed on 182 square miles of northwestern Leon County in February, 2007. The hydro data was updated using change-detecion in a softcopy photogrammetric environment. The previous version of the hydro data was superimposed in the stereo model. All visible changes were compiled. The data was clipped and delivered by tiles. The tiling grid is called maptiles and can be found in the shape folder along with the building shapefile. The hydro polyline data is available as an ArcInfo coverage and ESRI polygon and line shapefiles

Process date: unknown


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Spatial Data Organization Information:


Direct spatial Rreference method: Vector


Point and vector object information:
SDTS terms description:
SDTS point and vector object type: String
Point and vector object count: 0

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Spatial Reference Information:


Horizontal coordinate system definition:
Planar:
Map projection:
Map projection name: NAD 1983 HARN StatePlane Florida North FIPS 0903 Feet
Lambert conformal conic:
Standard parallel: 29.58333333333333
Standard parallel: 30.75
Longitude of central meridian: -84.5
Latitude of projection origin: 29.0
False easting: 1968500.0
False northing: 0.0

Planar coordinate information:
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.0003280833333333335
Ordinate resolution: 0.0003280833333333335
Planar distance units: foot_us

Geodetic model:
Horizontal datum name: D North American 1983 HARN
Ellipsoid name: GRS 1980
Semi-major axis: 6378137.0
Denominator of flattening ratio: 298.257222101

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Entity and Attribute Information:


Detailed description:
Entity type:
Entity type label: hydro_ln

Attribute:
Attribute label: Shape
Attribute definition:
Feature geometry.
Attribute definition source:
ESRI

Attribute domain values:
Unrepresentable domain:
Coordinates defining the features.


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: TYPE
Attribute definition:
Feature Type

Attribute domain values:
Enumerated domain:
Enumerated domain value: 0
Enumerated domain value definition:
Island Polygon

Enumerated domain:
Enumerated domain value: 210
Enumerated domain value definition:
River

Enumerated domain:
Enumerated domain value: 212
Enumerated domain value definition:
Stream

Enumerated domain:
Enumerated domain value: 213
Enumerated domain value definition:
Hidden Stream

Enumerated domain:
Enumerated domain value: 215
Enumerated domain value definition:
Lake

Enumerated domain:
Enumerated domain value: 220
Enumerated domain value definition:
Headwall

Enumerated domain:
Enumerated domain value: 230
Enumerated domain value definition:
Swamp

Enumerated domain:
Enumerated domain value: 211
Enumerated domain value definition:
Hidden River

Enumerated domain:
Enumerated domain value: 213
Enumerated domain value definition:
Hidden Stream

Enumerated domain:
Enumerated domain value: 217
Enumerated domain value definition:
Hidden lake

Attribute:
Attribute label: DXF_LAYER
Attribute definition:
Description of layer type for CAD conversion

Attribute domain values:
Enumerated domain:
Enumerated domain value: RIVER

Enumerated domain:
Enumerated domain value: HIDDEN-RIVER

Enumerated domain:
Enumerated domain value: STREAM

Enumerated domain:
Enumerated domain value: HIDDEN-STREAM

Enumerated domain:
Enumerated domain value: LAKE

Enumerated domain:
Enumerated domain value: HIDDEN-LAKE

Enumerated domain:
Enumerated domain value: HEADWALL

Enumerated domain:
Enumerated domain value: SWAMP

Attribute:
Attribute label: SOURCE
Attribute definition:
Update entiry

Attribute domain values:
Enumerated domain:
Enumerated domain value: 1
Enumerated domain value definition:
ADR Associates

Enumerated domain:
Enumerated domain value: 2
Enumerated domain value definition:
Merrick & Company

Enumerated domain:
Enumerated domain value: 3
Enumerated domain value definition:
TLCGIS

Attribute:
Attribute label: MAP_DATE
Attribute definition:
Date of source imagery for update

Attribute domain values:
Enumerated domain:
Enumerated domain value: 2/2001

Enumerated domain:
Enumerated domain value: 2/2005

Enumerated domain:
Enumerated domain value: 2/2006

Enumerated domain:
Enumerated domain value: 2/2007

Enumerated domain:
Enumerated domain value: 2/2008

Attribute:
Attribute label: LENGTH
Attribute definition:
Featurte length (feet)

Attribute:
Attribute label: SHAPE_Length
Attribute definition:
Length of feature in internal units.
Attribute definition source:
Esri

Attribute domain values:
Unrepresentable domain:
Positive real numbers that are automatically generated.


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Metadata Reference Information:


Metadata date: 20160126


Metadata contact:
Contact information:
Contact organization primary:
Contact person: Jacob Coble
Contact organization: Tallahassee-Leon County GIS
Contact position: GIS Specialist II


Contact address:
Address type: mailing
Address:
Leon County Courthouse
Address:
301 S. Monroe Street
Address:
P3 Level
City: Tallahassee
State or province: Florida
Postal code: 32301
Country: US

Contact voice telephone: 850-606-5504
Contact facsimile telephone: 850-606-5501


Contact electronic mail address: coblej@leoncountyfl.gov


Hours of service: 8:00 to 5:00 M-F Eastern Standard Time



Metadata standard name: FGDC Content Standard for Digital Geospatial Metadata
Metadata standard version: FGDC-STD-001-1998
Metadata time convention: local time


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