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Angela Bransteitter
Pennsylvania Department of Environmental Protection
(717) 772-5164
Bureau of Water Standards and Facility Regulation
PO Box 8467
11th Floor
Harrisburg
Pennsylvania
17105
US
ArcGIS Metadata
1.0
PA DEP
Geospatial Data Center
717 772-1669
ra-epgeospatialdatacenter@state.pa.us
Feature Class
Existing Use Streams
Pennsylvania Department of Environmental Protection
RCSOB
Pennsylvania Department of Environmental Protection
Chapter 93 Reference: Commonweath of Pennsylvania. 2003. Pennsylvania Code. Title 25 Environmental Protection. Department of Environmental Protection. Chapter 93. Water Quality Standards. Harrisburg, PA
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>National Hydrography Dataset NHDFlowline layer with spatial representation of existing water uses defined in Title 25 Environmental Protection, Department of Environmental Protection, Chapter 93, Water Quality Standards. The Pennsylvania Code just cited provides a definition for distinguishing between designated and existing use classification. This GIS layer displays these uses spatially on an interactive stream map. Public users can drill down to locations on the map to view and map the existing uses of the water bodies of interest. The layer can also be used in conjunction with other spatially referenced data for spatial analyses.</SPAN></P></DIV></DIV>
Existing Use Streams establishes protection for a waterbody on or after November 28, 1975 whether or not that use is included in the water quality standards (25 Pa. Code §93.1 and 40 CFR §131.3(e)). Existing Use is different from a Designated Use; Designated Use is defined for each waterbody or segment whether or not the use is being attained. Existing Use is the actual use the waterbody is attaining at the time of an evaluation The Department maintains a publicly accessible list of surface water segments where data has been evaluated which indicates an existing use classification of a waterbody that is more protective than the designated use (including those segments which are HQ or EV). Only an existing use which is more stringent than the designated use in §§ 93.9a - 93.9z for a particular waterbody is placed on the existing use list. This GIS stream layer (which is not part of the Water Quality Standards) is offered to provide a spatial representation of the Aquatic Life Use Tiers contained in the portion of the Pennsylvania Code referenced above. These spatial representations are intended to supplement the Water Quality Standards but should not be substituted for the official version of the standards found in the Pennsylvania Code.
Mark Brickner
Pennsylvania Department of Environmental Protection
(717) ) 783-9719
PO Box 8467
: Bureau of Water Standards and Facility Regulation
11th Floor
Harrisburg
Pennsylvania
17105
US
Pennsylvania
fishes, EV, Exceptional Value Waters, Exceptional Value, TSF, Trout, Trout Stocking, WWF, warm water, Warm Water Fishes, Warm Water Fish, HQ, High Quality, High Quality Waters, Migratory Fishes, Water Use, Special Protection, Streams Existing Use
Existing Use, Water Quality Standards, stream, streams, river, rivers, water, creek, creeks, CWF, cold water, cold water fishes, cold water fish, fish
inlandWaters
fishes
EV
Exceptional Value Waters
Exceptional Value
TSF
Trout
Trout Stocking
WWF
warm water
Warm Water Fishes
Warm Water Fish
HQ
High Quality
High Quality Waters
Migratory Fishes
Water Use
Special Protection
Streams Existing Use
Pennsylvania
Existing Use
Water Quality Standards
stream
streams
river
rivers
water
creek
creeks
CWF
cold water
cold water fishes
cold water fish
fish
inlandWaters
None. Public Access.
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>DISCLAIMER: These data, offered to provide a spatial representation of standards contained in the Pennsylvania Code. Title 25 Environmental Protection, Department of Environmental Protection, Chapter 93, Water Quality Standards, are current and accurate to the best of our knowledge and are appropriately updated as required. These data should not be substituted for the official version of the standards in the Pennsylvania code. Commonwealth of Pennsylvania Department of Environmental Protection Disclaimer for Data The user shall save the Commonwealth harmless from any suits, claims, or actions arising out of the use of the data files or accompanying documentation, or arising out of any defects in the datafiles or accompanying documentation. The Commonwealth excludes any and all implied warranties and makes no warranty or representation with respect to the data files or accompanying documentation, including quality, performance, merchantability, or fits for a particular purpose. These data files and documentation are provided "as is" and the user assumes the entire risk as to their quality and performance.</SPAN></P></DIV></DIV>
publication date
0.000000
0.000000
The Chapter 93 existing use streams layer was completed using the NHDFlowline for geographical location. Using a database containing the Chapter 93 Water Quality Standards information, a customized ArcView 9.1 project was developed to create the new layer. This project related the stream name given in the database with the stream name that was contained in a GIS layer containing all of the streams in Pennsylvania. Each Existing Use record in the database was linked with the appropriate records in the stream GIS layer. With this linked stream selected, a spatially referenced Exisitng Use record was created by selecting the upstream and downstream limits, as well as any additional streams falling within those limits. These limits, along with any additional streams, were chosen based upon the records location. This new record contained the River Mile Index (RMI) for the upstream and downstream limit, as well as the upstream and downstream RMIs for any additional streams required for the given location. Once all of the Existing Use records had their respective RMIs, a new stream layer was created. This was accomplished by relating the Existing Use RMIs with the existing streams GIS layer and selecting out the appropriate streams and stream segments. These new segments were then merged together to form one record for the given Existing Use location. After the new Existing Use layer was complete, it was checked for gaps and overlapping segments and corrected as needed. See Process Steps for more information.
Esri ArcGIS 10.3.1.4959
1
-80.445373
-74.975590
42.000096
39.720303
The Existing Use Streams were created using a custom extension for ArcInfo 9.1 called Instream Comprehensive Evaluation (ICE). Custom forms are used to input attribute data and a map interface allows the users to select the segments of the high resolution NHD (National Hydrography Dataset). The resulting data is stored in the Department' s enterprise database system, SLIMS (Streams and Lakes Integrated Management System), as event tables with underlying attributes.
2007-01-01
CH93_EXISTING_USE
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9874
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SHAPE.LEN
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0
0
0
OBJECTID_1
OBJECTID_1
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10
0
EXISTING_USE_GEN_ID
EXISTING_USE_GEN_ID
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4
10
0
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
SHAPE
Geometry
4
0
0
USE_DESCRIPTION
USE_DESCRIPTION
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0
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OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
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10
0
HUC
HUC
String
8
0
0
QUALIFIER
QUALIFIER
String
255
0
0
LENGTH_MILES
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LENGTH_MILES
Single
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6
3
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14 digit reach code from the NHD
REACH_CODE
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14
0
0
SEGMENT_NARRATIVE
SEGMENT_NARRATIVE
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255
0
0
BASIN_NARRATIVE
BASIN_NARRATIVE
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255
0
0
BASIN
BASIN
String
1
0
0
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0
0
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COM_ID
Integer
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0
MIGRATORY_FISH
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String
1
0
0
DATE_EVALUATION
DATE_EVALUATION
Date
36
0
0
USER_NAME
USER_NAME
String
255
0
0
LAST_EDIT_USER
LAST_EDIT_USER
String
255
0
0
LAST_EDIT_DATE
LAST_EDIT_DATE
Date
36
0
0
GNIS_ID
GNIS_ID
String
10
0
0
GNIS_NAME
GNIS_NAME
String
65
0
0
dataset
EPSG
8.6.2
9874
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20150710