Baltimore County DEPRM
REQUIRED: The date when the data set is published or otherwise made available for release.
Sub191
vector digital data
withheld
Sub191
The subsheds191 data set contains areas of land that contribute runoff and groundwater into a specific stream system. These 191 subsheds nest into the features in the Watersheds data set, thus 'subsheds', a shortening of sub-watersheds. The data was interpreted from Baltimore County's 1953 topographic maps and was delineated at 1:2400 scale. Each feature in this data set represents the drainage basin for a single "named stream." Because named streams are easily recognizable to citizens, these basins are convenient for reporting data to citizen groups. Stream names were extensively researched by S. Hank Grose. Stream name sources included 1970-1990 state highway maps and various historic maps.
This data was created to accurately locate the 191 subsheds within Baltimore County. This data enables the reporting of landscape activities and characteristics that are required to be reported by watershed and with a smaller grain size than the "12-digit" watersheds from MD DNR.
en
unknown
ground condition
None planned
-76.896812
-76.317370
39.721937
39.194670
1341577.680000
1504369.145250
557197.900000
748561.000250
None
Watershed
Basin
Drainage Area
191 subsheds
subshed
None
Maryland
Baltimore County
None
A Baltimore County GIS Data License Agreement must be executed for access to data.
Baltimore County - Department of Environmental Protection and Resource Management
Robert Hirsch
mailing and physical address
Suite 416, 401 Bosley Avenue
Towson
MD
21204
USA
410 887 4488
rhirsch@co.ba.md.us
8 am - 5 pm Monday to Friday
None
ESRI ArcCatalog 9.3.1.3000
Personal GeoDatabase Feature Class
This data was created by digitizing watershed boundaries that were delineated on 200 scale photogrametric/topographic maps
This data is complete for all of the 191 "Subshed" watersheds for Baltimore County. This data stops at the Baltimore County border although the watersheds continue beyond these boundaries.
AEROSERVICE CORPORATION, PHILADELPHIA, PA
April 1953
Photogrametric Methods
1:2400
Mylar
April 1953
publication date
Dataset copied.
withheld
Dataset copied.
Dataset copied.
withheld
Metadata imported.
withheld
Dataset copied.
withheld
Dataset moved.
withheld
Metadata imported.
withheld
Metadata imported.
withheld
Dataset copied.
withheld
20090115
08523800
Dataset copied.
withheld
20090813
15421700
Metadata imported.
withheld
20101216
16124700
Dataset copied.
withheld
20110330
08264800
Dataset copied.
withheld
20110406
09530800
Dataset copied.
withheld
20110417
20592100
Dataset copied.
withheld
20110621
08363500
Dataset copied.
withheld
20110621
08404400
Dataset copied.
withheld
20110713
21224200
Vector
Simple
FALSE
0
TRUE
FALSE
coordinate pair
0.000250
0.000250
survey feet
D_North_American_1983_HARN
Geodetic Reference System 80
6378137.000000
298.257222
GCS_North_American_1983_HARN
NAD_1983_HARN_StatePlane_Maryland_FIPS_1900_Feet
0.000003
Explicit elevation coordinate included with horizontal coordinates
Hydrology_Sub191
Feature Class
0
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
WATERSHED
MDE8DIGTID
String
12
0
0
MDE8DIGTID
WATERSHED
String
50
0
0
BASIN
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
TRIBTEAMBA
BASIN
String
26
0
0
MDE8digtID
Maryland Department of the Environment "8-digit" watershed identification number. Subsheds nest into "8-digit" watersheds.
DEPRM
TRIBTEAMBA
String
26
0
0
Shape
Feature geometry.
ESRI
Coordinates defining the features.
SUBSHED
String
31
0
0
Watershed
Name of "8-digit" watershed this subshed is a part of.
SUBSH_PART
String
31
0
0
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
GLOBALID
GlobalID
38
0
0
Basin
Basin (or "6-digit watershed") names assigned by the Maryland Department of the Environment. Watersheds nest into Basins.
DEPRM
CREATED_USER
String
255
0
0
Coordinates defining the features.
TribTeamBa
Basin names assigned by the Chesapeake Bay Tributary Teams. Watersheds nest into Trib Team Basins.
DEPRM
CREATED_DATE
Date
8
0
0
Positive real numbers that are automatically generated.
SUBSHED
Name of subshed, and name of stream subshed drains to.
LAST_EDITED_USER
String
255
0
0
ESRI
Positive real numbers that are automatically generated.
SUBSH_PART
Unique name for each feature comprising one subshed. Several subsheds have non-contiguous polygons.
LAST_EDITED_DATE
Date
8
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
Baltimore County - Office of Information Technology
GIS Public Access Technician
410 887 2233
gis@co.ba.md.us
Subsheds191
None
1.198
Contact GIS Public Access Technician for access to data.
None
20101222
Baltimore County - DEPRM
Leo Fothergill
GIS Analyst
mailing and physical address
401 Bosley Ave
Suite 416
Towson
MD
21204
410 887 4488
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile
en
20240821
14141900
FALSE
20240701
14014200
20240701
14014200
Hydrology_Sub191
002
1341577.680000
1504369.145250
557197.900000
748561.000250
1
Projected
GCS_North_American_1983_HARN
Linear Unit: Foot_US (0.304801)
NAD_1983_HARN_StatePlane_Maryland_FIPS_1900_Feet
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1.0
FGDC CSDGM Metadata
Esri ArcGIS 13.1.0.41833
Hydrology_Sub191
1341577.68
1504369.14525
748561.00025
557197.9
1
-76.896812
-76.31737
39.721937
39.19467
1
1
-76.896812
-76.317370
39.721937
39.194670
ISO 19115 Geographic Information - Metadata
DIS_ESRI1.0
dataset
002
withheld
Personal GeoDatabase Feature Class
File Geodatabase Feature Class
NAD_1983_HARN_StatePlane_Maryland_FIPS_1900_Feet
EPSG
6.3(9.0.0)
0
20240701