Pennsylvania Spatial Data Access

Abstract:

The connected network of streams and waterways of Pennsylvania are indicated as single lines in this coverage.  Waterways are given connected topology to show the direction of flow from the headwaters of the stream through the watershed to the extent of the coverage.  With ARC Network data can be used for watershed modelling.

Purpose:

Educational, watershed modelling

Currentness_Reference:

publication date

Use_Constraints:

Originator asks to be credited in other derived products.

Address:

Land  Water Building

Attribute_Accuracy_Report:

Conforms to National Mapping Program Geospatial Data Standards.  Attribute accuracy has been checked by visual comparison against source materials and peer review at ERRI.

Logical_Consistency_Report:

Chain-node topology present. Verified visually.

Completeness_Report:

Verified against source materials.  Entire stream network connected.

Horizontal_Positional_Accuracy_Report:

Data compiled from sources conforming to National Map Accuracy Standards.  Checked visually against source materials.

Source_Contribution:

provided base data

Process_Description:

PennDOT coverage was brought into ARC/INFO and positions were corrected and stream networks were connected using a variety of authoritative hard copy maps and real-world observations.

Process_Description:

Dataset copied.

Process_Description:

Metadata imported.

Attribute_Definition:

Internal feature number.

Attribute_Definition_Source:

ESRI

Attribute_Definition:

Feature geometry.

Attribute_Definition_Source:

ESRI

Entity_and_Attribute_Overview:

Coverage attribute tables contain the following for stream segments and nodes.
NETSTREAMS.AAT:
COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  FNODE#                 4     5     B      -
    5  TNODE#                 4     5     B      -
    9  LPOLY#                 4     5     B      -
   13  RPOLY#                 4     5     B      -
   17  LENGTH                 8    18     F      5
   25  NETSTREAMS#            4     5     B      -
   29  NETSTREAMS-ID          4     5     B      -
   33  WRDS#                  6     6     I      -
   39  TYPE                   1     1     C      -
NETSTREAMS.NAT:
COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  ARC#                   4     5     B      -
    5  NETSTREAMS#            4     5     B      -
    9  NETSTREAMS-ID          4     5     B      -

Entity_and_Attribute_Detail_Citation:

none

Address:

115 Land and Water Building

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.

Address:

115 Land and Water research building

Networked streams of Pennsylvania