20260924
09415700
1.0
FALSE
MD_ImpStr1
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80134.412900
61798.352900
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1
002
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
SRBC - Albers Equal Area Conic NAD83
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20260924
09251400
20260924
09251400
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Becky Monahan
Maryland Department of the Environment
1800 Washington Blvd
Baltimore
Maryland
21230
Becky.Monahan@maryland.gov
US
410-537-3947
8 am- 4:30 pm
Becky Monahan
ArcGIS Metadata
1.0
2018-04-02T00:00:00
vector digital data
Becky Monahan
Maryland Department of the Environment
1800 Washington Blvd
Baltimore
Maryland
21230
Becky.Monahan@maryland.gov
US
410-537-3947
8 am- 4:30 pm
Impaired Streams, MD portion of Susquehanna River Basin, 2024
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This layer provides the polygonal areas for all impoundments in the state of Maryland for Arsenic assessments from the 2024 Integrated Report. Assessment information includes all assessments captured within Maryland's 2024 Integrated Report and are generally displayed according to Categories: impaired and require a TMDL (Category 5), impaired and have a TMDL approved by the Environmental Protection Agency (EPA) (Category 4a), impaired but have exemptions from needing a TMDL (Categories 4b-4c), insufficient data is available to determine if water is meeting all standards (Category 3), are meeting some standards (Category 2), and waters that are meeting all standards (Category 1).</SPAN></P></DIV></DIV></DIV>
This layer provides the polygonal areas and Arsenic assessment information for all impoundments throughout the state of Maryland from the 2024 Integrated Report. It allows users to display Arsenic assessment information according to the Integrated Report listing category (e.g. 1, 2, 3, 4a, 4b, 4c, or 5).
The Maryland Department of the Environment (MDE) acknowledges the U.S. Geological Survey (USGS) which created the National Hydrography Dataset (NHD). The NHD serves as the derived polygonal areas for this file and was used to geospatially describe most of Maryland's impoundments; however, MDE had to manually create the boundaries for some impoundments due to the inaccuracies within the NHD. The Maryland Department of the Environment linked the Integrated Report assessment information to the NHD and then preserved this pollutant-specific layer.
ISO 19115 Topic Categories
environment
impaired streams
Integrated List
environment
impaired streams
Maryland
Susquehanna River Basin
Integrated List
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The State of Maryland makes no warranty or representation, express or implied, with respect to the quality, content, accuracy, completeness, currency, freedom from computer virus, or non-infringement of proprietary rights, of any of the design, information, text, graphics, images, pages, interfaces, links, software, or other materials and items contained in or displayed in this layer. All such items and materials are provided on an "as is" basis, and you are fully and solely responsible for your use of them and for any results or consequences of your use. They have been compiled from a variety of sources, including sources beyond the control of the State of Maryland, and are subject to change without notice from the State. Commercial use is prohibited without the prior written permission of the State. In no event shall the State or its agencies, officers, employees, agents, or representatives be liable for any direct, indirect, special, punitive, incidental, exemplary or consequential damages arising your accessing or using the site, or otherwise arising from the site or from anything contained in or displayed on the site. Nothing contained in or displayed on this site constitutes or is intended to constitute legal advice by the State or any of its agencies, officers, employees, agents, attorneys, or representatives.</SPAN></P></DIV></DIV></DIV>
-79.507551
-76.361469
38.081523
39.747013
0.000000
0.000000
Data for the 2014 IR
0.000000
0.000000
Becky Monahan
Maryland Department of the Environment
1800 Washington Blvd
Baltimore
Maryland
21230
Becky.Monahan@maryland.gov
US
410-537-3947
8 am- 4:30 pm
Becky Monahan
Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.0.8321
1
-76.598584
-76.065506
39.723146
39.552969
Maryland
Susquehanna River Basin
The State of Maryland makes no warranty or representation, express or implied, with respect to the quality, content, accuracy, completeness, currency, freedom from computer virus, or non-infringement of proprietary rights, of any of the design, information, text, graphics, images, pages, interfaces, links, software, or other materials and items contained in or displayed in this layer. All such items and materials are provided on an "as is" basis, and you are fully and solely responsible for your use of them and for any results or consequences of your use. They have been compiled from a variety of sources, including sources beyond the control of the State of Maryland, and are subject to change without notice from the State. Commercial use is prohibited without the prior written permission of the State. In no event shall the State or its agencies, officers, employees, agents, or representatives be liable for any direct, indirect, special, punitive, incidental, exemplary or consequential damages arising your accessing or using the site, or otherwise arising from the site or from anything contained in or displayed on the site. Nothing contained in or displayed on this site constitutes or is intended to constitute legal advice by the State or any of its agencies, officers, employees, agents, attorneys, or representatives.
MD_ImpStr1
Feature Class
46
SHAPE
Feature geometry.
Esri
Coordinates defining the features.
Shape
Geometry
4
0
0
AU_ID
Assessment Unit ID
String
255
0
0
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
10
0
Cycle_First_Listed
Year First Listed
Integer
4
10
0
Cycle_Last_Assessed
Year Last Assessed
Integer
4
10
0
Waterbody_Name
Waterbody Name
String
1073741822
0
0
Basin_Name
Basin Name
String
1073741822
0
0
HUC
HUC
String
1073741822
0
0
Basin_Code
Basin Code
Integer
4
10
0
County
County
String
1073741822
0
0
Water_Type
General Water Type
String
1073741822
0
0
Water_Type_Detail
Detailed Water Type
String
1073741822
0
0
Tidal_Influence
Tidal Influence
String
1073741822
0
0
AU_Size
AU_Size
Double
8
38
8
AU_Units
Size Units
String
1073741822
0
0
Use_Class
Use Class
String
1073741822
0
0
Designated_Use
Designated Use Assessed
String
1073741822
0
0
Listing_Category
Listing Category
String
1073741822
0
0
Cause
Pollutant
String
1073741822
0
0
Action
Action
String
1073741822
0
0
Sources
Sources
String
1073741822
0
0
Action_Year
Year of Action
String
1073741822
0
0
MILES
MILES
Double
8
38
8
Notes
Notes
String
1073741822
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
Feature Class
dataset
46
Simple
FALSE
46
TRUE
TRUE
20260924
Selected all impaired streams and waterbodies from MD Intregrated List GDB within the Susquehanna River Basin. Used centerlines for Susquehanna River polygons. Merged impaired streams into 1 feature class and reprojected to SRBC Albers.
2026-09-24T00:00:00
Jeff Zimmerman, Jr.
Susquerhanna River Basin Commission
GIS Developer
4423 N. Front St.
Harrisburg
PA
17110
jzimmerman@srbc.gov
US
717-238-0423
M-F, 8 AM to 4 PM