Shoreline Inventory for James City County
and the City of Williamsburg 2014: Shoreline Structures
Shapefile
Tags
Access structures, Virginia, Riparian Land use, Shoreline Inventory,
Chickahominy River, College Creek, James River, Skimino
Creek, Taskinas Creek, York River, Erosion control
structures, Bank cover, James City County, City of Williamsburg
Summary
To inventory James City County and the City of
Williamsburg tidal shoreline conditions.
Description
Shoreline Situation Reports (SSR) were
first generated by VIMS in the 1970's to report the condition and status of the
shore lands. The SSR series were published in hardcopy on a county by county
basis for each of the Tidewater Virginia localities. The reports were intended
to assist planners, managers, and regulators in decisions pertaining to
management of coastal areas and natural resources therein. This is the first
Shoreline Inventory Report for James City County and the City of Williamsburg.
Data collected describes conditions in the immediate riparian zone, the bank,
and along the shore.
Credits
There are no credits for this item.
Use limitations
These data should not be used for jurisdictional permit
determinations beyond providing general shoreline condition or status
information. These data have not been surveyed to property boundaries.
Extent
|
West |
-76.917628 |
East |
-76.578164 |
|
North |
37.461035 |
South |
37.164880 |
Scale Range
|
Maximum
(zoomed in) |
1:5,000 |
|
Minimum
(zoomed out) |
1:150,000,000 |
ArcGIS Metadata ▼►
Topics and Keywords ▼►
Themes or categories of the resource farming, boundaries,
environment, structure
* Content type Downloadable Data
Export to FGDC CSDGM XML format as
Resource Description No
Place keywords Virginia, James City
County, City of Williamsburg, Chickahominy River, College Creek, Jamestown
Island, Mill Creek, James River, Gordon Creek, Diascund
Creek, Skimino Creek, Taskanas
Creek, York River
Theme keywords Land use, Shoreline
Inventory, Bank cover, Shoreline Stability, Bank Height, Beach, Access
Structures, Shoreline Structures
Citation ▼►
Title Shoreline Inventory for
James City County and the City of Williamsburg 2014: Shoreline Structures
Publication date 2014-01-01 00:00:00
Presentation formats * digital map
Citation Contacts ▼►
Responsible party
Individual's name Marcia Berman
Organization's name Comprehensive Coastal
Inventory, Virginia Institute of Marine Science
Contact's position Director Comprehensive Coastal
Inventory Program
Contact's role principal investigator
Phone
Voice 804-684-7188
Fax 804-684-7179
Address
Type postal
Delivery point P.O.Box
1346
City Gloucester Point
Administrative area Virginia
Postal code 23062
Country US
e-mail address marcia@vims.edu
Resource Details ▼►
Dataset languages * English (UNITED STATES)
Dataset character set utf8 - 8 bit UCS
Transfer Format
Spatial representation type * vector
Supplemental information
There are four shapefiles that are part of the 2014 James City County and the City of Williamsburg Shoreline Inventory database:JCC_Wmsbg_lubc_2014, JCC_Wmsbg_sstru_2014, JCC_WMSBG_astru_2014 and JCC_Wmsbg_tm_2014. JCC_Wmsbg_lubc_2014 (land use and bank cover for James City County and the City of Williamsburg) is a linear shapefile containing data about land use, tree fringe, bank height, bank cover, bank stability and beach status along the shoreline. JCC_Wmsbg_sstru_2014 (James City County and the City of Williamsburg shoreline structures) is a linear shapefile delineating hard structures in place at the shoreline (bulkhead, dilapidated bulkhead, riprap, wharf, unconventional, debris, marina < 50 slips, marina > 50 slips, jetty, marsh toe revetment, groinfield and breakwaters). JCC_Wmsbg_astru_2014 ( James City County and the City of Williamsburg access structures) is a point shapefile with locations of docks, dilapidated docks, boathouses, and private and public boat ramps. JCC_Wmsbg_tm_2014 (James City County and the City of Williamsburg tidal marshes) shows the location, size, species and type of tidal marshes. The attributes of these four shapefiles are explained in the Entity and Attribute Information section below.
* Processing
environment Microsoft
Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri
ArcGIS 10.1.0.3035
ArcGIS item
properties
* Name JCC_Wmsbg_sstru_2014
* Size 2.286
* Location http://ccrm.vims.edu/ccrmp/index.html
* Access protocol Comprehensive Coastal Resource Management Portal
Extents ▼►
Extent
Geographic
extent
Bounding
rectangle
Extent type Extent used for
searching
* West longitude -76.917628
* East longitude -76.578164
* North latitude 37.461035
* South latitude 37.164880
* Extent contains
the resource Yes
Extent in the
item's coordinate system
* West longitude 330393.204300
* East longitude 359889.186500
* South latitude 4114871.745400
* North latitude 4147196.800300
* Extent contains
the resource Yes
Resource
Constraints ▼►
Legal
constraints
Limitations of
use
The Comprehensive Coastal Inventory Program (CCI) at VIMS performs a service by distributing data generated by either CCI or public agencies which offer data without restriction or charge. CCI assumes no responsibility for data accuracy or precision, metadata completeness or correctness for digital information. CCI assumes no liability for misuse of any data which may arise as a result of any alteration, conversion, or combination with other data sources. As well, the timeliness and scale of these products must be considered when evaluating appropriate use.
Other
constraints
These data should not be used for jurisdictional permit determinations beyond providing general shoreline condition or status information. These data have not been surveyed to property boundaries.
Constraints
Limitations of
use
These data should not be used for jurisdictional permit determinations beyond providing general shoreline condition or status information. These data have not been surveyed to property boundaries.
Spatial
Reference ▼►
ArcGIS
coordinate system
* Type Projected
* Geographic
coordinate reference GCS_North_American_1983
* Projection NAD_1983_UTM_Zone_18N
* Coordinate
reference details
Projected
coordinate system
Well-known
identifier 26918
X origin -5120900
Y origin -9998100
XY scale 450445547.3910538
Z origin -100000
Z scale 10000
M origin -100000
M scale 10000
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
LatestWKID 26918
Well-known text PROJCS["NAD_1983_UTM_Zone_18N",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-75.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",26918]]
Reference
system identifier
* Value 26918
* Codespace EPSG
* Version 7.9.4
Spatial
Data Properties ▼►
* Level of
topology for this dataset geometry only
Geometric
objects
Feature class
name JCC_Wmsbg_sstru_2014
* Object type composite
* Object count 1157
ArcGIS Feature Class Properties
Feature class
name JCC_Wmsbg_sstru_2014
* Feature type Simple
* Geometry type Polyline
* Has topology FALSE
* Feature count 1157
* Spatial index TRUE
* Linear
referencing FALSE
Data
Quality ▼►
Lineage ▼►
Description A shoreline for James
City County and the City of Williamsburg was created using 2009 VBMP imagery as
a backdrop and using ArcGis version 10.0. Using this
as a baseline the shoreline inventory was remotely generated using two sources:
2012 oblique Pictometry imagery available through
Bing Maps, and 2013 high resolution imagery available from the Virginia Base
Mapping Program (VBMP). The Tidal Marsh Inventory was updated by surveying in
the field in June 2014. Shorelines of Chickahominy River, College Creek, James
River, Mill Creek, Powhatan Creek, Queen Creek, Shellbank
Creek, Skiffes Creek, Skimino
Creek, Taskinas Creek, The Thorofare,
Ware Creek, and York River were surveyed. The shoreline was coded for land use,
bank height, bank condition, bank cover and the presence or absence of beach,
access structures and hardened structures.
Description A
small draft boat was used to collect data in the field. Data is logged using a geo-referenced
video camera. The Red Hen System provides hardware and software to collect
geo-referenced video and photo data in the field. A standard video camera (sony ACC-HDV7) is interfaced with
a GPS antennae via the Red Hen hardware device - VMS 300. VMS 300 converts GPS
data into audio signals, which are sent to a video camera through its
microphone input connector. As the video is recorded, GPS data are transmitted
once per second to the video camera by VMS 300. Each GPS location is linked
with a time code on the video. Therefore, the survey is a set of videos
containing geographically referenced shoreline data.
When the
process occurred 2014-02-01 00:00:00
Description All processing steps for
the shoreline inventory were done using ArcGis
version 10. Using the latest VBMP 2013 imagery as a background, conditions visible
on shore were used to code a digital shoreline created using VBMP 2009 imagery.
Conditions were also verified using Bing Birds Eye and aerial imagery. For the
land use/bank cover shapefile arcs were split and
coded for land use, bank height, bank cover, bank stability, tree fringe and
presence or absence of beach, for the access structure shapefile
arcs were coded for dock, dilapidated dock, boathouse, and public and private
ramps, for the shoreline structure shapefile arcs
were coded for bulkhead, delapidated bulkhead,
riprap, unconventional, debris, wharf, breakwater, groinfield,
jetty, marsh toe revetment and marina >50 and <50 slips.
Distribution ▼►
Distribution
format
* Name Shapefile
Version digital
Transfer
options
* Transfer size 2.286
Fields ▼►
Details for object JCC_Wmsbg_sstru_2014 ▼►
* Type Feature Class
* Row count 1157
Definition
A collection of geographical features with the same geometry type (such as point, line or poly), same attributes, and the same spatial reference.
* Alias FID
* Data type OID
* Width 4
* Precision 0
* Scale 0
* Field
description
Internal feature number.
* Description
source
ESRI
* Description of
values Sequential
unique whole numbers that are automatically generated.
* Alias Shape
* Data type Geometry
* Width 0
* Precision 0
* Scale 0
* Field
description
Feature geometry.
* Description source
ESRI
* Description of
values Coordinates
defining the features.
* Alias Id
* Data type Integer
* Width 9
* Precision 9
* Scale 0
Field
description
An ID number generated
* Alias Structures
* Data type String
* Width 50
* Precision 0
* Scale 0
Field
description
Shoreline structures: bulkhead, dilapidated bulkhead, riprap, unconventional, debris, breakwater, groinfield, marsh toe revetment, and marinas > or < 50 slips
Description
source
CCI Program
List of values
Value Bulkhead
Description Bulkhead - Bulkheads are
traditionally treated wood or steel “walls” constructed to offer protection
from wave attack. More recently, plastics are being used in the construction.
Bulkheads are vertical structures built slightly seaward of the problem area
and backfilled with suitable fill material. They function like a retaining
wall, as they are designed to retain upland soil, and prevent erosion of the
bank from impinging waves.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Value Dilapidated Bulkhead
Description Dilapidated Bulkhead – A
bulkhead which has failed due to deterioration from age or storm damage is
called a dilapidated bulkhead. In many cases the structure may not be able to
perform erosion control functions any longer.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Value Riprap
Description Riprap (aka Revetments)
- Sloped structures constructed with large, heavy stone or other materials
placed against the upland bank for erosion protection are classified as riprap.
Riprap is mapped as a linear feature along the shoreline. Riprap is also used
next to failing bulkheads (bulkhead toe revetments). The inventory maps only
riprap when this type of structure is co-located with bulkheads. A similar
structure is used to protect the edge of eroding marshes. This use is mapped as
marsh toe revetment, not riprap.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Value Marsh toe revetment
Description Marsh toe revetment (aka
Marsh sill) –A low revetment placed offshore from an existing marsh or new
planted marsh is classified as marsh toe revetment. The structure may include
tidal openings to allow for the easy exchange of free swimming organisms during
tidal cycles. Marsh toe revetments are mapped as offshore linear features
running along the length of the structure. Marsh toe revetments are
distinguished from breakwaters by the linear placement and presence of a tidal
marsh instead of a sand beach landward from the structure. The classification
can include best professional judgment.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Value Debris
Description Debris – Debris represents
nonconforming materials and rubble dumped along the shoreline in a haphazard
manner. Debris can include tires, bricks, broken concrete rubble, and railroad
ties as examples. The inventory maps Unconventional instead of Debris when the
material is deliberately placed for shoreline protection in a manner similar to
riprap, bulkhead, and other shoreline protection structures.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Value Unconventional
Description Unconventional -
Unconventional features represent segments along the shore where alternative
material has been deliberately placed for shoreline protection. Unconventional features
may include unique materials placed in a similar manner as riprap or bulkheads,
such as engineered pre-cast concrete products. It may also include unique
placement or arrangement of conventional materials like riprap that does not
fit other structure definitions. The inventory maps Debris instead of
Unconventional when the material is haphazardly scattered and not providing any
shoreline protection value.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Value Breakwater
Description Breakwaters -
Breakwaters are structures that sit offshore and generally occur in a parallel
series along the shore. Some breakwaters are attached to the land and are
referred to as headland breakwaters. Their purpose is to attenuate and deflect
incoming wave energy, protecting the fastland behind
and between the structures.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Value Groinfield
Description Groinfield
- Groins are low profile structures that sit perpendicular to the shore. They
can be constructed of rock, timber, or concrete. They are frequently set in a
series known as a groinfield, which may extend along
a stretch of shoreline for some distance. Unless only a single groin can be
detected, this inventory does not delineate individual groins in a groinfield. The groinfield is
mapped as one linear feature parallel to the shoreline running along the length
of the groin series. When effective, groins will trap sediment moving
alongshore.
Enumerated
domain value definition source Glossary of Shoreline Features Defined,
Center for Coastal Resources Management, VIMS
Description of
values Shoreline
structures on land and off shore
* Alias Length_mi
* Data type Double
* Width 19
* Precision 0
* Scale 0
Field
description
Length of features or structures in miles.
Description
source
Data processor
Description of
values arc
segment length in miles
* Alias Survey
* Data type String
* Width 50
* Precision 0
* Scale 0
Field
description
Date of shoreline inventory processing or field survey date
Description
source
Data processor
Description of
values a
text field that describes the field survey date or the processing date of the data.
Metadata
Details ▼►
* Metadata
language English (UNITED
STATES)
* Metadata
character set utf8 - 8 bit UCS Transfer Format
Scope of the
data described by the metadata * dataset
Scope name * dataset
* Last update 2014-11-18
ArcGIS metadata
properties
Metadata format ArcGIS 1.0
Metadata style FGDC CSDGM Metadata
Standard or
profile used to edit metadata ISO19139
Created in
ArcGIS for the item 2014-08-21 14:10:22
Last modified
in ArcGIS for the item 2014-11-18 11:43:27
Automatic
updates
Have been
performed Yes
Last update 2014-11-18 11:43:27
Metadata
Contacts ▼►
Metadata
contact
Individual's
name Sharon
Killeen
Organization's
name Virginia
Institute of Marine Science (VIMS)
Contact's
position GIS
Programmer/Analyst
Contact's role point of contact
Phone
Voice 804-684-7534
Fax 804-684-7179
Address
Type postal
Delivery point P.O.Box
1346
City Gloucester Point
Administrative
area Virginia
Postal code 23062
e-mail address sharon@vims.edu