20230216
00204100
1.0
FALSE
CBSeg104_Attainment_Albers
002
1595304.843800
1774194.135000
1696221.059000
2024576.010500
1
Projected
GCS_North_American_1983
Linear Unit: Meter (1.000000)
Albers_Conical_Equal_Area
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20210929
23134400
20210929
23332300
150000000
5000
FGDC
Esri ArcGIS 12.7.0.26828
CBSeg104_Attainment_Albers
1
-77.810257
-75.016846
39.805611
36.611386
104 Chesapeake Bay SAV segments with basic statistics alongside the current attainment deficit statistics
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>104 Chesapeake Bay SAV segments with basic statistics alongside the current attainment deficit statistics</SPAN></P></DIV></DIV>
Monitoring
Modeling
TMDL
Attainment
Deficit
File Geodatabase Feature Class
dataset
104
Simple
FALSE
104
TRUE
FALSE
CBSeg104_Attainment_Albers
Feature Class
104
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
STATE
STATE
String
2
0
0
CBSEG_104
CBSEG_104
String
9
0
0
WQ_SEGS
WQ_SEGS
String
255
0
0
SEGMENT_NAME
SEGMENT_NAME
String
255
0
0
RIVER_BASIN
RIVER_BASIN
String
255
0
0
Basin Reports Systems V3 as of 2021-02-04
SALINITY
SALINITY
String
255
0
0
Salinity Regime (polyhaline, mesohaline, oligohaline, tidal fresh)
PH
Polyhaline
MH
Mesohaline
OH
Oligohaline
TF
Tidal Fresh
VOLUME
VOLUME
Double
8
0
0
The estimated bathymetric volumes of 92 Chesapeake Bay TMDL segments. The real volume of each segment changes over time. The data used to create the bathymetric volumes were an ArcGIS shapefile of the 92 Chesapeake Bay TMDL segments and a raster file of the bathymetry for the Bay and tributaries. The bathymetry data used were derived in 1999 by the Bay Program from more than 3 million NOAA/NOS GEODAS soundings (datum mean lower low) that were interpolated into 10m x 10m cells. The depth values in the bathymetry data were in increments of 0.1 meters. The depths are at mean low water. The bathymetry data is in UTM Zone 18N.
Using ESRI’s ArcGIS Model Builder, the volume of water for each segment for each of the Bay’s 503 0.1 meter bathymetric depths was calculated and summarized by segment. Note: No bathymetry data currently exist for two of the TMDL segments (WBRTF and ANATF_MD) and so no volumes were generated for those segments.
cubic meter
DEPTH
DEPTH
Double
8
0
0
The estimated bathymetric maximum depth of 92 Chesapeake Bay TMDL segments. The real depth changes over time.
The data used to create the bathymetric maximum depth were an ArcGIS shapefile of the 92 Chesapeake Bay TMDL segments and a raster file of the bathymetry for the Bay and tributaries. The bathymetry data used were derived in 1999 by the Bay Program from more than 3 million NOAA/NOS GEODAS soundings (datum mean lower low). The depth values in the bathymetry data were in increments of 0.1 meters. The depths are at mean low water.
Note: No bathymetry data currently exist for two of the TMDL segments (WBRTF and ANATF_MD) and so no depth were generated for those segments.
meter
MetersSq
MetersSq
Double
8
0
0
Surface area of 92 Chesapeake Bay TMDL segments provided by CBP Modeling team, close to the area calculated in UTM Zone 18N
square meter
Shoreline_m
Shoreline_m
Double
8
0
0
The estimated shoreline distance within each SAV segment. The distance is calculated using SHORE_HR and 104 SAV segments in Albers Conical Equal Area projection.
meter
MAX_DEPTH
MAX_DEPTH
Double
8
0
0
The estimated maximum depth of 104 Chesapeake Bay SAV segments. The real depth changes over time. The data used to create the maximum depth were an ArcGIS shapefile of the 104 Chesapeake Bay SAV segments and a raster file of the Topobathy for the Bay and tributaries. The Topobathy data is the Topobathymetric Model for Chesapeake Bay Region 1859 to 2015 developed by USGS. The depths are at North American Vertical Datum of 1988.
Note: No Topobathy data currently exist for TMDL segment ANATF_MD and so no depth was generated for this segment.
meter
MEAN_DEPTH
MEAN_DEPTH
Double
8
0
0
The estimated mean depth of 104 Chesapeake Bay SAV segments. The real depth changes over time. The data used to create the mean depth were an ArcGIS shapefile of the 104 Chesapeake Bay SAV segments and a raster file of the Topobathy for the Bay and tributaries. The Topobathy data is the Topobathymetric Model for Chesapeake Bay Region 1859 to 2015 developed by USGS. The depths are at North American Vertical Datum of 1988.
Note: No Topobathy data currently exist for TMDL segment ANATF_MD and so no depth was generated for this segment.
meter
Surface_area
Surface_area
Double
8
0
0
The shape area of 104 Chesapeake Bay SAV segments calculated in Albers Conical Equal Area projection.
square meter
Center_Lat
Center_Lat
Double
8
0
0
Latitude of segment centroid
Center_Long
Center_Long
Double
8
0
0
Longitude of segment centroid
SW_1416
SW_1416
Double
8
0
0
Attainment Deficit of Shallow Water Bay grass 2014-2016
Pct_1416
Pct_1416
Double
8
0
0
Shallow Water Percentage 2014-2016
Attm_1416
Attm_1416
String
255
0
0
Shallow Water Attainment 2014-2016
Pct2Attm_1416
Pct2Attm_1416
Double
8
0
0
Shallow Water Percent to Attainment 2014-2016
SW_1517
SW_1517
Double
8
0
0
Attainment Deficit of Shallow Water Bay grass 2015-2017
Pct_1517
Pct_1517
Double
8
0
0
Shallow Water Percentage 2015-2017
Attm_1517
Attm_1517
String
255
0
0
Shallow Water Attainment 2015-2017
Pct2Attm_1517
Pct2Attm_1517
Double
8
0
0
Shallow Water Percent to Attainment 2015-2017
SW_1618
SW_1618
Double
8
0
0
Attainment Deficit of Shallow Water Bay grass 2016-2018
Pct_1618
Pct_1618
Double
8
0
0
Shallow Water Percentage 2016-2018
Attm_1618
Attm_1618
String
255
0
0
Shallow Water Attainment 2016-2018
Pct2Attm_1618
Pct2Attm_1618
Double
8
0
0
Shallow Water Percent to Attainment 2016-2018
SW_1719
SW_1719
Double
8
0
0
Attainment Deficit of Shallow Water Bay grass 2017-2019
Pct_1719
Pct_1719
Double
8
0
0
Shallow Water Percentage 2017-2019
Attm_1719
Attm_1719
String
255
0
0
Shallow Water Attainment 2017-2019
Pct2Attm_1719
Pct2Attm_1719
Double
8
0
0
Shallow Water Percent to Attainment 2017-2019
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.
20210929