Forested Water Quality


Identification_Information:
Citation:
Citation_Information:
Originator:Natural Lands Trust with input data from PA DEP.
Publication_Date:May 2006
Title:
Forested Water Quality
Edition:first
Geospatial_Data_Presentation_Form:raster digital data
Online_Linkage: ftp://www.pasda.psu.edu/pub/pasda/nlt
Online_Linkage: http://www.natlands.org
Description:
Abstract:
This raster dataset has been created using inputs including "Networked Streams of Pennsylvania" data as originated by Environmental Resources Research Institute (see metadata entitled "netstreams.htm", "Pennsylvania Land Cover dated 1992" developed by the EROS Data Center for EPA Federal Region III (see metadata entitled "Land Cover 1992 EPA Federal Region III.pdf") and small watersheds (see metadata entitled "smallsheds.xml").  The percent of first and second order streams (Strahler method) within the small watersheds and the percent of Forest (Coniferous Forest, Mixed Forest, Deciduous Forest, and Woody Wetland) within the small watersheds were calculated. The shapefiles were then converted to Raster and reclassified into 10 quantiles as follows:

1st & 2nd Order streams:
Old Value		New Value
0-42			1
43-59			2
60-66			3
67-70			4
71-75			5
76-78			6
79-83			7
84-89			8
90-99			9
99-100			10	


Forest:
Old Value		New Value
0-10			1
11-18			2
19-23			3
24-28			4
29-33			5
34-40			6
41-45			7	
46-53			8
54-66			9
67-100			10

The reclassified first & second order streams and the forest were then added together and divided by 2 to maintain the 0-10 value range. 

Conservation values were determined by experts gathered by Natural Lands Trust through SmartConservation®. This data set is one of several that have been combined to create an overall aquatic resources conservation value raster for the expanded piedmont ecoregion. Therefore the values were determined as a relative rank, comparable in value only to the other input aquatic resources data. Conservation value ranges from 1 - 10 with 10 being the highest value.
Purpose:
Assign conservation value to small watersheds based on a combination of percent of forest and percent of irst and second order streams within the Expanded Piedmont Ecoregion of Pennsylvania.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date:1992-2000
Currentness_Reference:
ground condition
Status:
Progress:Complete
Maintenance_and_Update_Frequency:Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.356474
East_Bounding_Coordinate: -74.540675
North_Bounding_Coordinate: 41.491614
South_Bounding_Coordinate: 39.197635
Keywords:
Theme:
Theme_Keyword_Thesaurus:ISO 19115 Topic Categories
Theme_Keyword:Forested Water Quality
Theme_Keyword:SmartConservation
Theme_Keyword:Expanded Piedmont
Theme_Keyword:Aquatic Resources
Theme_Keyword:biota
Place:
Place_Keyword:Piedmont
Place_Keyword:Expanded Piedmont
Place_Keyword:Pennsylvania
Access_Constraints:None
Use_Constraints:
None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person:Diane Rosencrance
Contact_Organization:Natural Lands Trust
Contact_Position:GIS Program Manager
Contact_Address:
Address_Type:mailing and physical address
Address:
1031 Palmers Mill Road
City:Media
State_or_Province:Pennsylvania
Postal_Code:19063
Country:USA
Contact_Voice_Telephone:610-353-5587
Contact_Electronic_Mail_Address:drosencrance@natlands.org
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722
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Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
Process:
Calculate percent of 1st & 2nd order stream length as percent of overall streams in watershed
Intersect 
input: "StreamOrder_'study area'"
overlay "Ordered_wshed_'study area'" (must be the entire watershed, even if they are outside the
 	study area boundary)
save as: "'study area'_streamorder_by_wshed"
in ...\'study area'\VectorData\StreamOrderbysmallwshed\

Add fields to "'study area'_streamorder_by_wshed"
"meter_leng" = length in meters of stream segments
"feet_lengt" = "meter_leng" * 3.281 - length in feet of stream segments
"sum_ft_wsh" as double - total stream length in feet based on watershed (calculated later)

Dissolve to calculate total length of streams in each watershed
input "'study area'_StreamOrder_by_wshed"
field: "Unique_id"
Additional fields: "Feet_lengt" as sum
save as: "'study area'_StreamOrder_by_wshed_dissolve"
in: \'study area'\VectorData\StreamOrder-by_Smallwshed\

Join attributes   right click on "'study area'_StreamOrder_by_wshed"
join based on "unique_id"
to: "'study area'_StreamOrder_by_wshed_dissolve\
based on "Unique_ID"

Calculate Field: 
"Sum_ft_wsh" = "Sum_feet_L" from "'study area'_StreamOrder_by_wshed_dissolve"

Remove Joins

Dissolve to calculate length for 1st order & 2nd order streams by wshed
Select all 1st order streams (strahler = 1) in "'study area'_StreamOrder_byWshed"
input: "'study area'_StreamOrder_by_wshed"
field: "unique_id"
Additional Fields: "Feet_lengt" as sum
save as: "Firstorder_by_wshed_dissolve"

Select all 2nd order streams (Strahler = 2) from "'study area'_StreamOrder_by_wshed"
 input "'study area'_StreamOrder_by_wshed"
field: "Unique_ID"
save as: "SecondOrder_by_wshed_Dissolve"
in \VectorData\StreamOrder_by_SmallWshed\expanded_Ridge_and_Valley\

Add fields to "'study area'_StreamOrder_by_wshed"
"1st Ord_len"  - length of 1st order streams by wshed
"2ndOrd_len" - length of 2nd order streams by wshed

Join attributes - right click on "'study area'_StreamOrder_by_wshed"
based on "Unique_ID"
a.) to "firstorder_by_wshed dissolve
	calculate value for "1stOrdLen" = "firstorderbywshed_dissolve_sum_feet_L"

b.) to "secondorder_by_wshed_dissolve"
	calculate value for "2ndOrdLen" = "SecondOrder_by_wshed_dissolve_sum_feet_L"

Add and calculate fields to "'study area'_StreamOrder_by_wshed"
"1_2_ord_le" = (1stOrd_len) + (2ndOrd_len) - length of 1st & 2nd order streams in feet
"1_2_Perdec" = (1_2_ord_le) / (Sum_ft_wsh)  - % of 1st & 2nd Order stream length as % of overall
 	stream length within watershed in decimals
"Percent1_2" = (1_2_perdec) * 100  -  % of 1st & 2nd Order stream length as % of overall stream
 	length within watershed in %

Convert to Raster
Use 'study area' as mask
Input: "Orderedwshed_'study area'"
Field: "Percent 1_2"
Save as: "wshed_1_2OrSt"
in ...\'study area'\individual_grid\first_and_second_order_streams_as_wshed\original\

Convert to Integer Raster: & add .5 to the value because conversion to integer rounds down & this will correct the rounding effect.
Use 'study area' as mask
Raster calc: 
INT ([wshed_1_2or St] + 0.5)
Save as: "Int_1_2orStws"
in \'study area'\Individual_grid\first_and_second_Order_Streams_as_wshed\integer\

Reclassify based on 10 Quantiles
Expanded Piedmont and Expanded Ridge & Valley			
Old Values		New Values
    0-42			         1
   42-59		         2
   59-66		         3
   66-70		         4
   70-75		         5
   75-78		         6
   78-83		         7
   83-89		         8
   89-99		         9
  99-100		        10
save as: "'study area'_WS_1_2 or _R"
in 'study area'\Interim_Ranked_Grids\ FirstandSecond_order_Streams\
Calculate percent of Forested Land Cover as percent of overall land cover in watershed
Create Forest land cover grid
Reclassify
input: "'study area' LC_2000" (use most recent land cover) (clipped to study area)
field: value

	Old Value			New Value
	1 (water		  	No Data
`	2 (Low Dens Urban)	 	No Data
	3 (High Dens Urban)	   	No Data
	4 (Hay Pasture)	   		No Data
	5 (Row Crops)		   	No Data
	6 not in area		     	 -----
	7 (Coniferous Forest)	         	1
	8 (Mixed Forest)	         	1
	9 (Deciduous Forest)	         	1
	10 (Woody Wetland)	         	1
	11 (Emergent Wetland)       	No Data
	12 (Quarries)			No Data
	13 (Coal Mine)			No Data
	14 not in area		     	----
	15 transitional			No Data

Save as: " 'study area'_Forested"
in \'study area'\individual_grid \Forested_LandCover\

** Use the appropriate gridcode that represents water, forest, and wetlands land cover, the gridcode will probably be different in updated land cover

Convert to Features
Input: "'study area'_Forested_2000"
in: 'study area'\VectorData\LandCover\

Intersect
Input: "'study area'_Forested_2000" 
Overlay: "Orderedwshed_'study area'"
save as: 'study area'_Forest_2000_by_wshed"
in: 'study area'\VectorData\landcover_bySmallwshed\

Dissolve 
Input: "'study area'_forest_2000_bywshed"
field: "unique ID"
additional fields: "Name" as first
save as: "'study area'_forest_2000_bywshed_dissolve
in: \VectorData\LandCover_bySmallwshed\
	
Add fields
"forest_SQM" - sq. meters of forest within watershed
"forest_acr" - acreage of forest within watershed


Join attributes - right click "Ordered wshed_'study area'"
	based on "unique_id"
	to "'study area'_Forest_2000_bywshed_dissolve"
	based on "unique_id"

Calculate fields
	"forest_SQM" = "'study area'_Forest_2000_bywshed_dissolve_forest_SQM"
	"forest_Acr" = "'study area'_Forest_2000_bywshed_dissolve_forest_ACR"

Remove joins

Add and Calculate fields
	"Forest_dec" = (Forest_Acr)/ (Acre_wshed)   - % of forest within wshed as decimal
	"Forest_per" = (Forest_dec) * 100   - % of forest within wshed as percent

Convert to Raster
Use 'study area'
Input: "Orderedwshed_'study area'"
Field: "Forest_per"
save as: "Forest_wshed"
in ...'study area'\indivgrid\Forested_wshed\original

Convert to integer Raster & add 0.5 to the value because the conversion rounds down & this will correct the problem.
Raster calc: INT ([forest_wshed] + 0.5)
save as: "int_forest_ws"
in ...'study area'\indivgrid\ Forested_wshed\integer\

Reclassify tovalue based on 10 quantiles
input: "int_Forest_WS"
field "value"
	Old Value		New Value
	0-10			        1
	10-18			        2
	18-23			        3
	23-28			        4
	28-33			        5
	33-40			        6
	40-45			        7
	45-53			        8
	53-66			        9
	66-100			        10

save as: "Forest_WS_Ra"
in ...'study area'\Interim_Ranked_Grids\ Forested_wshed\


Add percent of 1st & 2nd order stream length as percent of overall streams in watershed and
percent of Forested Land Cover as percent of overall land cover in watershed

Add two layers together & divide by 2 to bring back to 0-10 range
RasterCalc: ([RV_WS1_2or R] + [ForestWS_Ra])   2
Process_Date:2003-2005
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
Y:\ArcGIS_Projects\Smart Conservation Documentation\Metadata\Aquatic\riparian buffer quality expanded piedmont.xml
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
Y:\ArcGIS_Projects\Smart Conservation Documentation\Metadata\Expanded Piedmont Ecoregion\Aquatic\water quality 303d 305b.xml
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method:Raster
Raster_Object_Information:
Raster_Object_Type:Grid Cell
Row_Count:8320
Column_Count:10625
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:30.000000
Ordinate_Resolution:30.000000
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: calc2
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:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Pennsylvania Spatial Data Access (PASDA)
Contact_Address:
Address_Type:mailing address
Address:
115 Land and Water Building
City:University Park
State_or_Province:Pennsylvania
Postal_Code:16802
Country:United States
Contact_Voice_Telephone:(814) 865 - 8792
Contact_Electronic_Mail_Address:pasda@psu.edu
Resource_Description:downloadabledata
Distribution_Liability:
The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation.

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size:2.103
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Metadata_Reference_Information:
Metadata_Date:20060517
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:Natural Lands Trust
Contact_Person:Diane Rosencrance
Contact_Position:GIS Program Manager
Contact_Address:
Address_Type:mailing and physical address
Address:
1031 Palmers Mill Road
City:Media
State_or_Province:PA
Postal_Code:19063
Country:USA
Contact_Voice_Telephone:610-353-5587
Contact_Electronic_Mail_Address:drosencrance@natlands.org
Metadata_Standard_Name:FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version:FGDC-STD-001-1998
Metadata_Time_Convention:local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name:ESRI Metadata Profile
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