Resource Lands Assessment - Water Quality Protection for the Chesapeake Bay Watershed


Identification_Information:
Citation:
Citation_Information:
Originator:Chesapeake Bay Program
Publication_Date:Unpublished Material
Title:
Resource Lands Assessment - Water Quality Protection for the Chesapeake Bay Watershed
Geospatial_Data_Presentation_Form:raster digital data
Online_Linkage: http://www.chesapeakebay.net/
Online_Linkage: http://www.pasda.psu.edu/
Description:
Abstract:
Grid of the Chesapeake Bay Watershed with cell values representing relative value for the maintenance of water quality.
Purpose:
Assistance in prioritizing land for conservation in terms of value to the maintanence of water quality.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:1990
Ending_Date:1997
Currentness_Reference:
ground condition
Status:
Progress:Complete
Maintenance_and_Update_Frequency:Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -81.009731
East_Bounding_Coordinate: -74.577117
North_Bounding_Coordinate: 43.003232
South_Bounding_Coordinate: 36.551227
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:land conservation
Theme_Keyword:water quality
Theme_Keyword:resource lands assessment
Theme_Keyword:biota
Theme_Keyword:inlandWaters
Place:
Place_Keyword:Chesapeake Bay Watershed
Access_Constraints:Output datasets have no constraints. Some input datasets are not available for distribution.
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Andrew Fitch
Contact_Organization:UMCES - Chesapeake Bay Program
Contact_Position:GIS Applications Developer
Contact_Address:
Address_Type:mailing and physical address
Address:
410 Severn Ave., Suite 109
City:Annapolis
State_or_Province:MD
Postal_Code:21403
Country:USA
Contact_Voice_Telephone:410-267-9835
Contact_Facsimile_Telephone:410-267-5777
Contact_Electronic_Mail_Address:afitch@chesapeakebay.net
Data_Set_Credit:
Chesapeake Bay Program
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535
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Data_Quality_Information:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:US Department of Agriculture, Natural Resources Conservation Service
Publication_Date:1994
Title:
State Soil Geographic (STATSGO) Database
Geospatial_Data_Presentation_Form:vector digital data
Publication_Information:
Publication_Place:Fort Worth, TX
Publisher:US Department of Agriculture, Natural Resources Conservation Service
Online_Linkage: http://www.ncgc.nrcs.usda.gov/branch/ssb/products/statsgo
Source_Scale_Denominator:250000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:1994
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
STATSGO
Source_Contribution:
Erodibility of Soils (K Factor)
Source_Information:
Source_Citation:
Citation_Information:
Originator:US Department of Agriculture, US Forest Service
Title:
Net Primary Productivity
Publication_Information:
Publisher:US Department of Agriculture, US Forest Service
Source_Scale_Denominator:1 km
Source_Citation_Abbreviation:
NPP
Source_Contribution:
Net Primary Productivity
Source_Information:
Source_Citation:
Citation_Information:
Originator:US Geological Survey
Title:
Digital Elevation Model
Geospatial_Data_Presentation_Form:raster digital data
Publication_Information:
Publication_Place:Reston, VA
Publisher:US Geological Survey
Online_Linkage: http://edc.usgs.gov/products/elevation/dem.html
Source_Scale_Denominator:24000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:unknown
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
DEM
Source_Contribution:
Slope
Source_Information:
Source_Citation:
Citation_Information:
Originator:US Fish and Wildlife Service
Publication_Date:1981 - Present
Title:
National Wetlands Inventory
Geospatial_Data_Presentation_Form:vector digital data
Publication_Information:
Publication_Place:St. Petersburg, FL
Publisher:US Fish and Wildlife Service
Online_Linkage: http://nwi.fws.gov/
Source_Scale_Denominator:20000 - 62500
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:1971
Ending_Date:1997
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
NWI
Source_Contribution:
Wetland Function
Source_Information:
Source_Citation:
Citation_Information:
Originator:Chesapeake Bay Program
Publication_Date:1999
Title:
Mean Forest Patch Size by HUC-11
Geospatial_Data_Presentation_Form:vector digital data
Publication_Information:
Publication_Place:Annapolis, MD
Publisher:Chesapeake Bay Program
Other_Citation_Details:
Derived from 1992 MRLC
Source_Scale_Denominator:100000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:1990
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
CBP Forest Patch Size
Source_Contribution:
Forest Fragmentation - Patch Size
Source_Information:
Source_Citation:
Citation_Information:
Originator:Federal Emergency Management Agency
Publication_Date:Unknown
Title:
FEMA Q3 Flood Data
Geospatial_Data_Presentation_Form:vector digital data
Publication_Information:
Publication_Place:Washington, DC
Publisher:Federal Emergency Managment Agency
Online_Linkage: http://www.msc.fema.gov/q3flooda.shtml
Source_Scale_Denominator:24000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:unknown
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
FEMA Q3
Source_Contribution:
100 Year Flood Plains
Source_Information:
Source_Citation:
Citation_Information:
Originator:Brakebill, J.W. (ed)
Originator:Kelley, S.K. (ed)
Publication_Date:2000
Title:
Hydrogeomorphic Regions in the Chesapeake Bay Watershed
Geospatial_Data_Presentation_Form:vector digital data
Publication_Information:
Publication_Place:Baltimore, MD
Publisher:US Geological Survey
Online_Linkage: http://water.usgs.gov/lookup/getspatial?hgmr
Source_Scale_Denominator:250000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:2000
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
HGMR
Source_Contribution:
Hydrogeomorphic Regions
Source_Information:
Source_Citation:
Citation_Information:
Originator:USGS EROS Data Center
Publication_Date:1997
Title:
1997 Multi-Resolution Land Characteristics
Geospatial_Data_Presentation_Form:raster digital data
Publication_Information:
Publication_Place:Souix Falls, SD
Publisher:US Geological Survey
Other_Citation_Details:
Covers only Chesapeake Bay watershed; created specifically for Chesapeake Bay Program.
Source_Scale_Denominator:100000
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:1995
Ending_Date:1996
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
MRLC
Source_Contribution:
Percent Forested
Percent Impervious
Source_Information:
Source_Citation:
Citation_Information:
Originator:Ducks Unlimited
Publication_Time:2003
Title:
Ducks Unlimited Water Quality Rankings
Publication_Information:
Publisher:Ducks Unlimited
Other_Citation_Details:
derived in part from USGS SPARROW model data - http://md.water.usgs.gov/gis/chesbay/SPARROW.htm
Source_Scale_Denominator:100000
Source_Time_Period_of_Content:
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
DU
Source_Contribution:
Water Quality Rankings
Source_Information:
Source_Citation:
Citation_Information:
Originator:USGS
Publication_Date:2003
Title:
Surface Water Intakes by 11-Digit Watershed
Geospatial_Data_Presentation_Form:spreadsheet
Other_Citation_Details:
Contains a list of municipal surface water intakes in the Chesapeake Bay Watershed, with 11-digit watershed and population served by the supplier operating each intake.
Online_Linkage: None
Source_Scale_Denominator:100000
Source_Citation_Abbreviation:
Surface Water Intakes
Source_Contribution:
Municipal Surface Water Supplies - Intakes and Population Served
Source_Information:
Source_Citation:
Citation_Information:
Originator:Chesapeake Bay Program
Publication_Date:1997
Title:
Chesapeake Bay Watershed Medium Resolution Water Bodies
Geospatial_Data_Presentation_Form:vector digital data
Publication_Information:
Publication_Place:Annapolis, MD
Publisher:Chesapeake Bay Program
Other_Citation_Details:
Derived from USGS 1:100,000 DLG
Online_Linkage: ftp://ftp.chesapeakebay.net/pub/Geographic/MidAtlantic/Hydrography/Waterbodies/DLG100K/
Source_Scale_Denominator:100000
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:1997
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
wbody_mr
Source_Contribution:
Proximity to Water
Process_Step:
Process_Description:
Proximity to Water.
NHD and CBP medium resolution water body coverages were converted to ESRI Grids.
A Chesapeake Bay watershed boundary polygon coverage was converted to an ESRI Grid.
Grid EUCDISTANCE function was used to assign distance values in meters, using the NHD/Water Bodies combination as the source grid, and the watershed grid as the output location for distance values.
These values were then divided into the following classes and assigned a score (noted in parentheses):
0 - 90m (4)
90 - 180m (3)
180 - 270m (2)
> 270m (1)

The resulting grid was then multiplied by a weight of 5.
Source_Used_Citation_Abbreviation:
NHD
Source_Used_Citation_Abbreviation:
wbody_mr
Process_Date:2002
Process_Step:
Process_Description:
Erodibility of Soils.
STATSGO KFactor (KFact column in Layer table) data was downloaded and attached to STATSGO map unit coverage, which was clipped to the Chesapeake Bay watershed boundary.  This coverage was then converted to a grid.  The grid was reclassed and scores were assigned using the following classification system (scores in parentheses):
>= .3 (4)
.2 - .3 (3)
< .2 (2)

This grid was then multiplied by a weight of 2.
Source_Used_Citation_Abbreviation:
STATSGO
Process_Date:2002
Process_Step:
Process_Description:
Net Primary Productivity
Source_Used_Citation_Abbreviation:
NPP
Process_Date:2002
Process_Step:
Process_Description:
Slope.
Slope percentages were derived from USGS DEM data for the Chesapeake Bay watershed using ArcView Spatial Analyst 3.1.  The resulting grid was reclassed and scores were assigned using the following classification system (scores in parentheses):
> 15% (4)
15 - 10% (3)
5-10% (2)
< 5% (1)

The resulting grid was then multiplied by a weight of 3.
Source_Used_Citation_Abbreviation:
DEM
Process_Date:2002
Process_Step:
Process_Description:
Wetland Function.
Source_Used_Citation_Abbreviation:
NWI
Process_Date:2002
Process_Step:
Process_Description:
Forest Fragmentation - Patch Size.
An existing Chesapeake Bay Program grid containing average forest patch size in acres by 11-digit watersheds was reclassed, and scores were assigned using the following classification system (scores in parentheses):

> 1000 (4)
400 - 1000 (3)
100 - 400 (2)
< 100 (1)

The resulting grid was multiplied by a weight of 2.
Source_Used_Citation_Abbreviation:
CBP Forest Patch Size
Process_Date:2002
Process_Step:
Process_Description:
FEMA 100-year flood plain.
A polygon coverage of FEMA 100-year flood plains was converted to a grid.  Grid cells within 100-year flood plains were given a score of 4, and all other cells were given a score of 0.  The resulting grid was multiplied by a weight of 2.
Source_Used_Citation_Abbreviation:
FEMA Q3
Process_Date:2002
Process_Step:
Process_Description:
Hydrogeomorphic Regions.
A coverage of USGS Hydrogeomorphic Regions was classed, and scores were assigned using the following classification system (scores in parentheses):

CPU   - Coastal Plain Uplands (4)
PCA   - Piedmont Carbonate (4)
VRS   - Valley and Ridge Siliciclastic (4)

PCR   - Piedmont Crystal (3)
BR   - Blue Ridge (3)
APC   - Appalachian Plateau Carbonate (3)

CPD   - Coastal Plain Dissected Uplands (2)
ML   - Mesozoic Lowlands (2)
VRC   - Valley and Ridge Carbonate (2)
APS   - Appalachian Plateau Siliciclastic (2)

CPL   - Coastal Plain Lowlands (1)

The coverage was converted to a grid, while retaining scores as the grid cell values.  The resulting grid was then multiplied by a weight of 2.
Source_Used_Citation_Abbreviation:
HGMR
Process_Date:2002
Process_Step:
Process_Description:
Stream Density.
Stream length (from NHD), in meters, was summed by 11-digit watershed.  The sum for each watershed was then divided by the area (in square kilometers) of each watershed.  The resulting values were then classed and scored using the following classification system (scores in parentheses):
(in meters/square kilometers)
> 1.042 (4)
0.77 - 1.042 (3)
0.524 - 0.769 (2)
0 - 0.523 (1)

The resulting grid was then multiplied by a weight of 4.
Source_Used_Citation_Abbreviation:
NHD
Process_Date:2002
Process_Step:
Process_Description:
Percent Forested
1997 MRLC data was reclassed -- forested cells were set to 1, while all other cells were set to 0.  A HUC11 coverage was converted to grid, and the Grid ZONALSUM function was used to calculate the number of forested cells within each watershed.  Then the MRLC data was reclassed again, with all cells set to 1.  The ZONALSUM function was used again to calculate the total number of cells within each watershed.  The number of forested cells for each watershed was then divided by the number of total cells in each watershed to calculate a percentage of cells that are forested.  The resulting grid was then reclassed and scored using the following classification system (scores in parentheses):
40 - 65% (4)
30 - 40; 65 - 75% (3)
15 - 30; 75 - 85% (2)
< 15; > 85% (1)

The resulting grid was then multiplied by a weight of 3.
Source_Used_Citation_Abbreviation:
MRLC
Process_Date:2002
Process_Step:
Process_Description:
Percent Impervious
The grid was reclassed and scored using the following classification system (scores in parentheses):
5 - 15% (4)
< 5% (3)
15 - 25% (2)
> 25% (1)

The resulting grid was then multiplied by a weight of 3.
Source_Used_Citation_Abbreviation:
MRLC
Process_Date:2002
Process_Step:
Process_Description:
Water Quality Rankings
Source_Used_Citation_Abbreviation:
DU
Process_Date:2003
Process_Step:
Process_Description:
Municipal Surface Water Supplies.
An excel spreadsheet containing number of surface water intakes per 11-digit watershed, and population served by the supplier operating each intake.  Because population figures were repeated for intakes operated by the same supplier, the decision was made to include population figures repeated in different watersheds, and to exclude population figures repeated within a single watershed.  The total number of intakes and population served per watershed were summed, and the resulting table joined to a HUC-11 coverage using the watershed ID.  Watersheds were then classified as high, medium, or low for number of intakes and population served, separately, as follows:
> 6 intakes = High Intakes
3 - 5 intakes = Medium Intakes
< 3 intakes = Low Intakes

Population
> 50,000 = High Population
5,001 - 50,000 = Medium Population
<= 5000 = Low Population

Watersheds in the High class for either Intakes or Population were assigned a score of 4.  Those in the medium class for both Intakes and Population were scored as 3.  Those in the low class for one category and the medium for the other were given a score of 2.  Those watersheds in the low class for both Intakes and Population were scored as 1.  The resulting coverage was converted to a grid, retaining the scores as cell values.  The resulting grid was then multiplied by a weight of 4.
Source_Used_Citation_Abbreviation:
Surface Water Intakes
Process_Date:2003
Process_Step:
Process_Description:
Calculate sum of input datasets
Process_Date:2003
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Raster
Raster_Object_Information:
Raster_Object_Type:Grid Cell
Row_Count:19114
Column_Count:14310
Vertical_Count:1
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name:Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number:18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian:0.999600
Longitude_of_Central_Meridian:-75.000000
Latitude_of_Projection_Origin:0.000000
False_Easting:500000.000000
False_Northing:0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method:row and column
Coordinate_Representation:
Abscissa_Resolution:36.730000
Ordinate_Resolution:36.730000
Planar_Distance_Units:meters
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
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: wq
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:Value
Attribute:
Attribute_Label:Count
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Distribution_Information:
Resource_Description:Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size:91.483
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Metadata_Reference_Information:
Metadata_Date:20050907
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Andrew Fitch
Contact_Organization:UMCES - Chesapeake Bay Program
Contact_Position:GIS Applications Developer
Contact_Address:
Address_Type:mailing and physical address
Address:
410 Severn Ave., Suite 109
City:Annapolis
State_or_Province:MD
Postal_Code:21403
Country:USA
Contact_Voice_Telephone:410-267-9835
Contact_Facsimile_Telephone:410-267-5777
Contact_Electronic_Mail_Address:afitch@chesapeakebay.net
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
Metadata_Use_Constraints:
None
Metadata_Extensions:
Online_Linkage:
Profile_Name:ESRI Metadata Profile
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