Floodplains of Pennsylvania

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:Office of Remote Sensing for Earth Resources, Penn State University

Publication_Date:199609

Title:

Floodplains of Pennsylvania

Geospatial_Data_Presentation_Form:vector digital data

Publication_Information:

Publication_Place:Harrisburg, Pennsylvania

Publisher:Pennsylvania Department of Environmental Protection

Online_Linkage: ftp://www.pasda.psu.edu/pub/pasda/floodpln/floodpln.zip

Description:

Abstract:

In an effort to expedite the permit review process for Water
Obstruction and Encroachment Applications, the Pennsylvania Department of
Environmental Protection has initiated a plan to replace hard-copy maps
with digital GIS sets. The project is referred to as the 105 Spatial Data
System /8105SDS/9
Pennsylvania river floodplains and coastal floodplains are two of many
spatial data sets that were used in the 105SDS project. As a result of work
completed by Law Environmental, Inc. on the statewide low-level radioactive
waste siting project, DEP received two coverages depicting river and
coastal floodplains. However, due to the process used in constructing these
data sets, there were many areas throughout the state in which floodplains
were not digitized. The primary purpose of this task was to complete the
digital floodplain mapping in these areas.

Purpose:

INTENDED USE OF DATA; Created to do permit reviews for Water Obstruction and Encroachment Applications. LIMITATIONS OF DATA; Due to the nature of transferring the floodplains from the Federal Emergency Management Agency maps to our plotted 1:24000 scale maps this coverage should be considered to be the "best representation" of the data but not as accurate as, for example, a map of Global Positioning System's floodplain coordinates.

Supplemental_Information:

1. The Law Environmental coverage was brought into workstation ARC/INFO.
Plots were made using this coverage, Pennsylvania Department of
Transportation roads, streams and municipal boundaries. Each plot was 3
quadrangle sheets (7.5 minute by 7.5 minute) large at 1:24000 scale.
2. The Law Environmental coverage was then clipped into 8 regions (using
the Pennsylvania Department of Transportation county coverage as a
guideline) for manageability reasons. Then each region was copied to
single precision and exported (with the "n" option) and then
transferred for import into PC ARC/INFO.
3. The available Federal Emergency Management Agency Flood Insurance Rate
Map/Federal Hazard Boundary maps were used to transfer the remaining
floodplains onto the above mentioned plots and were then digitized directly
into the Law Environmental regional coverage.
4. Once digitizing was finished the coverages were exported and transfered
back to the workstation where they were imported, cleaned and then edited
(in ARCedit) to remove any dangles and any other digitizing errors.
Usually the coverages were cleaned again and if not cleaned then they were
built.
5. Labels were created (createlabels), and then the coverage was built
again.
6. The item maptype was added to the .pat file and the floodplains were
then coded with their corresponding code. Some minor editing was done at
this step such as removing boundaries between floodplains with the same
code. Maptype codes reflect the level of detail of the original source map
higher values mean more detail.
7. When each coverage was finished some quality measurements were done. The
Pennsylvania Department of Transportation streams were brought up in the
background to double check the floodplain accuracy.
8. Coverages were built again. When the top 4 regions were complete they
were joined together same with the bottom 4 regions. The coverages were
cleaned and the boundaries between the regions were removed as well as
making sure all the border floodplains matched.
9. When the top and bottom halves were finished the two were joined
together and the boundary running through the middle of the state was
removed. The coverage was built, and the command unsplit (ARCedit) was
run to remove pseudonodes. The command createlabels was run to update the
label-ids in the .pat file and then the coverage was built one last time.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:1995

Currentness_Reference:

publication date

Status:

Progress:In work

Maintenance_and_Update_Frequency:As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -80.519585

East_Bounding_Coordinate: -74.690014

North_Bounding_Coordinate: 42.263659

South_Bounding_Coordinate: 39.719891

Keywords:

Theme:

Theme_Keyword_Thesaurus:ISO 19115 Topic Categories

Theme_Keyword:inlandWaters

Place:

Place_Keyword_Thesaurus:none

Place_Keyword:Pennsylvania

Access_Constraints:none

Use_Constraints:

This dataset contains errors that are an artifact of the
interpretation, source material and conversion process.  The data and
documentation are provided "as is."  PADEP makes no warranty or
representation, either express or implied, with respect to the data or
accompanying documentation, including its quality, performance or accuracy.
The PADEP will not be liable for any direct, indirect, special,
incidental, or consequential damages arising out of the use or inability to
use the data or any accompanying documentation.  The PADEP is working to
correct errors.  Users discovering errors or making corrections to the data
are requested to report such errors to the PADEP at maproom@psu.edu.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person:Barry Evans

Contact_Organization:Environmental Resources Research Institute

Contact_Address:

Address_Type:mailing address

Address:

Land and Water Research

City:University Park

State_or_Province:PA

Postal_Code:16802

Contact_Voice_Telephone:814-863-3531

Contact_Electronic_Mail_Address:bme1@psu.edu

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 3; ESRI ArcCatalog 8.2.0.700

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description:

Dataset copied.

Source_Used_Citation_Abbreviation:

Server=pasdaserve1.erri.psu.edu; Service=5151/tcp; Database=sde; User=sde; Version=SDE.DEFAULT

Process_Step:

Process_Description:

Metadata imported.

Source_Used_Citation_Abbreviation:

E:\UCI\ERRIFloodplains1996.xml

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method:Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type:G-polygon

Point_and_Vector_Object_Count:8732

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution:0.000000

Longitude_Resolution:0.000000

Geographic_Coordinate_Units:Decimal degrees

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

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Resolution:1.000000

Altitude_Encoding_Method:Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: SDE.SDE.ERRI_Floodplains_1996

Entity_Type_Definition:

Polygon attribute table

Entity_Type_Definition_Source:

FEMA FIRM and Federal Hazard Boundary maps and other digital data sources.

Attribute:

Attribute_Label:OBJECTID

Attribute_Definition:

Area of polygon/region in square coverage units.

Attribute_Definition_Source:

Computed

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:Positive real numbers

Enumerated_Domain_Value_Definition:

Area of polygon

Enumerated_Domain_Value_Definition_Source:

computed

Attribute:

Attribute_Label:SDE.SDE.ERRI_Floodplains_1996.AREA

Attribute_Definition:

Perimeter of polygon/region in square coverage units.

Attribute_Definition_Source:

Computed

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:Positive real numbers

Enumerated_Domain_Value_Definition:

perimeter

Enumerated_Domain_Value_Definition_Source:

computed

Attribute:

Attribute_Label:PERIMETER

Attribute_Definition:

Internal feature number.

Attribute_Definition_Source:

Computed

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:Sequential unique positive integer

Enumerated_Domain_Value_Definition:

number of the feature

Enumerated_Domain_Value_Definition_Source:

computed

Attribute:

Attribute_Label:FLOODPLN_

Attribute_Definition:

Identifies level of quality of source maps.  Based on
level of detail and quality of hydrogeologic modeling of source maps.

Attribute_Definition_Source:

FEMA FIRM

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:Positive integer 1 to 5

Enumerated_Domain_Value_Definition:

Higher numbers denote better quality mapping

Enumerated_Domain_Value_Definition_Source:

ERRI

Attribute:

Attribute_Label:FLOODPLN_ID

Attribute_Definition:

Standard Flood Hazard Area (SFHA) floodplain
designation

Attribute_Definition_Source:

FEMA FIRM

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value:0

Enumerated_Domain_Value_Definition:

Area located outside SHFA

Enumerated_Domain_Value_Definition_Source:

ERRI

Enumerated_Domain:

Enumerated_Domain_Value:1

Enumerated_Domain_Value_Definition:

Area located inside SHFA

Enumerated_Domain_Value_Definition_Source:

ERRI

Attribute:

Attribute_Label:MAPTYPE

Attribute:

Attribute_Label:FLOODPLAIN

Attribute:

Attribute_Label:SHAPE

Attribute_Definition:

Feature geometry.

Attribute_Definition_Source:

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Coordinates defining the features.

Attribute:

Attribute_Label:SE_ROW_ID

Attribute:

Attribute_Label:SHAPE..Area()

Attribute:

Attribute_Label:SHAPE..Length()

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Pennsylvania Spatial Data Access (PASDA)

Contact_Address:

Address_Type:mailing and physical 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

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.

Metadata_Reference_Information:

Metadata_Date:20060205

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:Pennsylvania Spatial Data Access (PASDA)

Contact_Address:

Address_Type:mailing and physical address

Address:

115 Land and Water research 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

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