FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION
VERSION 2006

TITLE: PROPOSED CRITICAL HABITAT FOR SEVEN MUSSELS 

Geodataset Name:       MUSSELS_CRIT_HAB
Geodataset Type:       SHAPEFILE
Geodataset Feature:    LINE
Feature Count:         872
GENERAL DESCRIPTION:
This dataset shows the proposed designation of critical habitat for endangered fat threeridge, shinyrayed pocketbook, Gulf moccasinshell, Ochlockonee moccasinshell and the oval pigtoe. Also shown are two threatened species the Chipola slabshell and the purple bankclimber. Collectively these species are referred to as the seven mussels. 
DATA SOURCE(S):                    U.S. FISH AND WILDLIFE SERVICE
SCALE OF ORIGINAL SOURCE MAPS:     100000, n/a
DATE OF AUTOMATION OF SOURCE:      20060606
GEODATASET EXTENT:                 STATE OF FLORIDA

FEATURE ATTRIBUTE TABLES: 

Datafile Name: MUSSELS_CRIT_HAB.dbf
ITEM NAME WIDTH TYPE N. DECIMAL DEGREES
COM_ID
11 Number ---
OBJECTID
4 OID ---
RCH_CODE
14 String ---
GNIS_ID
8 String ---
NAME
99 String ---
SOURCETHM
16 String ---
BASIN
100 String ---
LENGTH
19 Number 3
LGTH_MILES
19 Number 3
LNGTH_KM
19 Number 3
UNIT_NO
5 Number ---
UNIT_NAME
100 String ---
DESCRIPT
50 String ---
LEVEL_
4 Integer ---
FGDLAQDATE
36 Date ---
SHAPE
4 Geometry ---
AUTOID
4 Integer ---
SHAPE.LEN
0 Double ---

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item

Item Description





COM_ID

Common identifier
















OBJECTID

Internal feature number.
















RCH_CODE

Reach code
















GNIS_ID

Geographic Names Information System
















NAME

River or creek name
















SOURCETHM

Cataloging Unit Number
















BASIN

Basin Name
















LENGTH

Length in meters
















LGTH_MILES

Length in miles
















LNGTH_KM

Length in kilometers
















UNIT_NO

Proposed critical habitat unit number
















UNIT_NAME

Proposed critical habitat unit name
















DESCRIPT

Based on 'Name" field
















LEVEL_

Stream level
















FGDLAQDATE

Date FGDL aquired the data from source
















SHAPE

Feature geometry.
















AUTOID

Unique ID added by GeoPlan
















SHAPE.LEN

Length of line segment




























USER NOTES:








These data appear to be logically consistent.  No feature errors were identified















The data represents sites with known use by one of the seven species of mussels mapped.  
Mapped sites were identified based on survey results and the knowledge of biologists.  
Omissions may be possible due to the extent of coverage and difficulty of surveying all 
rivers and streams within the northeastern Gulf of Mexico drainages.















GeoPlan relied on the integrity of the attribute information within the original data.





























Horizontal accuracy was not tested; however, data was created using USGS 
National Hydrography Dataset (NHD) at a scale of 1:100,000.







































This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan







































A note concerning data scale:

Scale is an important factor in data usage. Certain scale 
datasetsare not suitable for some project, analysis, or
modeling purposes. Please be sure you are using the best
available data.

1:24000 scale datasets are recommended for projects that 
are at the county level.

1:24000 data should NOT be used for high accuracy base 
mapping such as property parcel boundaries.

1:100000 scale datasets are recommended for projects that 
are at the multi-county or regional level.

1:250000 scale datasets are recommended for projects that 
are at the regional or state level or larger.

Vector datasets with no defined scale or accuracy should 
be considered suspect. Make sure you are familiar with 
your data before using it for projects or analyses. Every 
effort has been made to supply the user with data 
documentation. For additional information, see the 
References sectionand the Data Source Contact section of 
this documentation. For more information regarding scale 
and accuracy, see our web pages at:

http://www.geoplan.ufl.edu/education.html








REFERENCES: 














DATA LINEAGE SUMMARY: 








Using mussel locations from source data, river reaches were selected from the 
NHD arc shapefiles and exported into a new shapefile.  Biologists with expertise
in current mussel occurrences reviewed the river reaches to identify missing 
streams or remove extra stream segments.  Fields were added to the attribute 
table for river distance (in meters, miles, and kilometers), unit name, and unit number.

The upstream boundary of a unit in an occupied stream is the first perennial tributary 
confluence or first permanent barrier to fish passage (such as a dam) upstream of 
the upstream-most current occurrence record.  The downstream boundary of a unit
in an occupied stream is the mouth of the stream, the upstream extent of tidal 
influence, or the upstream extent of an impoundment, whichever comes first, 
downstream of the downstream-most occurrence record.  Survey locations are 
typically at road crossings, because that is where surveyors can most easily gain 
access to the stream.  These road crossings do not typically represent a meaningful 
ecological boundary for longitudinal stream habitat conditions.

Data layers defining map units were created with USGS National Hydrography
Dataset (NHD) GIS data.  The 1:100,000 river reach (route) files were used to
calculate river kilometers and miles.  The following data sources were referenced 
to identify upstream and downstream extents of critical habitat units: 
USGS 7.5' quadrangles; Georgia Department of Transportation county 
highway maps; U.S. Census Bureau 1:100,000 TIGER line road data; 
1993 Georgia digital orthographic quarter quads (DOQQs); 
2004 Florida DOQQs; and DeLorme Atlas and Gazetteers for Alabama, 
Florida, and Georgia.  The projection used in mapping all units was 
Universal Transverse Mercator (UTM), NAD 83, Zone 16 North.
Process Date: 2005-2006


Geoplan acquired the data from the source
-Projected to FGDL Albers HPGN.
-UPCASED attribute table.
-Added fields 'DESCRIPT' and 'FGDLAQDATE'.
Process Date: 20060720









MAP PROJECTION PARAMETERS: 



Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000




DATA SOURCE CONTACT (S):








Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:




NHD
1601 Balboa Ave
Panama City, FL
32405
850-769-0552 x244


http://www.fgdl.org/
wendy_gierhart@fws.gov










FGDL CONTACT:

Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

Contact FGDL: 

      Technical Support:	        http://www.fgdl.org/fgdlfeed.html
      FGDL Frequently Asked Questions:  http://www.fgdl.org/fgdlfaq.html
      FGDL Mailing Lists:		http://www.fgdl.org/fgdl-l.html
      For FGDL Software:                http://www.fgdl.org/software.html