20240725
08520100
1.0
FALSE
Impervious_Surfaces_2023_wChangeTracking1
002
0.000
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot_US (0.304801)
NAD_1983_HARN_StatePlane_Maryland_FIPS_1900_Feet
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11132700
20250521
7393900
150000000
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ItemDescription
Esri ArcGIS 13.3.2.52636
Impervious Surfaces 2023
2023 Impervious Surfaces dataset for Anne Arundel County, MD.
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>Anne Arundel County, Maryland is interested in monitoring its changing impervious surface for planning and environmental protection purposes. The County uses this dataset to assist in studying and assessing land characteristics for compliance with regulated Total Maximum Daily Loads (TMDL) and the National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System (MS-4) permit issued by the Maryland Department of the Environment (MDE). The impervious surface dataset also serves as the basis for calculating the County</SPAN></SPAN><SPAN><SPAN>’</SPAN></SPAN><SPAN><SPAN>s stormwater remediation fee. Existing impervious surface datasets were previously created in 2004 (derived from 1-meter resolution IKONOS satellite imagery) and 2007/2011/2014/2017/2020 (derived from 6 inch resolution, four band, color infrared aerial photography). This version was updated in 2023 by Sanborn Map Company using 4-band aerial imagery (3-inch resolution, leaf-off) that was collected in the spring of 2023 by the State of Maryland. Areas that have undergone change in the period 2020-2023 were updated to reflect those changes, and any inconsistencies found in the 2020 dataset were corrected. The Minimum Mapping Unit for this layer is 100 square feet.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Custodian:
Name: Sally Szydlowski
Department: Department of Public Works - Bureau of Watershed Protection and Restoration
Email: pwszyd00@aacounty.org
AACO
Anne Arundel County
DPW
Department of Public Works
BWPR
Bureau of Watershed Protection and Restoration
2023
Impervious
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN STYLE="font-style:italic;"><SPAN>While efforts have been made to ensure the accuracy of this data, Anne Arundel County accepts no liability or responsibility for errors, omissions, or positional inaccuracies in the content of this data. Reliance on this data is at the risk of the user. This data is for illustration purposes only and should not be used for surveying, engineering, or site-specific analysis. For additional information view the </SPAN></SPAN><A href="https://drive.google.com/file/d/1_DrxuHchaI6CMxjqmuC0k0gTO3q_Nsgd/view?usp=sharing" STYLE="text-decoration:underline;"><SPAN STYLE="font-style:italic;text-decoration:underline;"><SPAN>GIS Disclaimer.</SPAN></SPAN></A></P><P><SPAN /></P></DIV></DIV></DIV>
Enterprise Geodatabase Feature Class
0.000
dataset
EPSG
6.3(9.0.0)
0
Simple
FALSE
0
TRUE
TRUE
Impervious_Surfaces_2023_wChangeTracking1
Feature Class
0
OBJECTID
OBJECTID
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Original_OBJECTID
Original_OBJECTID
Double
8
38
8
UPDATE_DATE
YEAR UPDATED
String
50
0
0
Original_SURFACE_TYPE
Original_SURFACE_TYPE
String
10
0
0
Original_FEATURE_TYPE
Original_FEATURE_TYPE
String
100
0
0
OrigOverlapFixed_Shape_Length
OrigOverlapFixed_Shape_Length
Double
8
38
8
ORIGOVERLAPFIXED_SHAPE_AREA
OrigOverlapsFixed_Shape_Area
Double
8
38
8
Correction_Type
Correction_Type
String
50
0
0
GlobalID
GlobalID
GlobalID
38
0
0
created_user
created_user
String
255
0
0
created_date
created_date
Date
8
0
0
last_edited_user
last_edited_user
String
255
0
0
last_edited_date
last_edited_date
Date
8
0
0
Deletion_Reason
Deletion_Reason
String
100
0
0
Correction_Source
Correction_Source
String
35
0
0
Correction_Comments
Correction_Comments
String
400
0
0
FEATURE_TYPE
FEATURE TYPE
String
35
0
0
SURFACE_TYPE
SURFACE TYPE
String
25
0
0
Shape
Shape
Geometry
8
0
0
Feature geometry.
Esri
Coordinates defining the features.
Shape.STArea()
Shape.STArea()
Double
0
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
20250521