Delta Vegetation and Land Use [ds292]

SDE Feature Class

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Download this dataset

Tags
biota, California Wildlife Habitat Relationships, Solano County, Sacramento - San Joaquin Delta, National Vegetation Classification Standard, Delta, Vegetation, farming, Sacramento County, Contra Costa County, environment, San Joaquin County, California, Yolo County, Habitat, Legal Delta, Alameda County


Summary

For use in assessing existing vegetation and land use conditions in the Delta and to serve as a baseline for monitoring future change.

Description

Vegetation and land use are mapped for the approximately 725,000 acres constituting the Legal Delta portion of the Sacramento and San Joaquin River Delta area. Vegetation mapping is to sub-alliance to super-alliance level (based on the National Vegetation Classification Standard, see http://biology.usgs.gov/npsveg/nvcs.html ); land use is mapped to Anderson Level 2 classification ( see http://landcover.usgs.gov/pdf/anderson.pdf ). The map classification is based on a vegetation classification derived from field data collected in summer and fall of 2005 produced by the Vegetation Classification and Mapping Program of the Department of Fish and Game. The 2002 Stockton, Sacramento, and Delta High Resolution (1-foot) Orthoimagery and 2005 NAIP (1-meter) orthoimagery served as the base. Natural vegetation comprises approximately 17% of the Delta study area, 65% is agriculture and pasture, 10% is urban/other and 8% is open water.

Credits

Aerial Information Systems, Inc. for California Department of Fish and Game, Vegetation Classification and Mapping Program.

Use limitations

Recognition that this dataset was created by Aerial Information Systems, Inc. for the California Department of Fish and Game. We would also appreciate corrections to the map sent to VegCAMP. Contact Diana Hickson dhickson@dfg.ca.gov

Extent

West -121.885160 East -121.196867
North 38.592499 South 37.623642

Scale Range
Maximum (zoomed in) 1:5,000
Minimum (zoomed out) 1:50,000

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource farming, biota, environment


* Content type Downloadable Data


Place keywords Solano County, Sacramento - San Joaquin Delta, Delta, Sacramento County, Contra Costa County, San Joaquin County, California, Yolo County, Legal Delta, Alameda County

Theme keywords California Wildlife Habitat Relationships, National Vegetation Classification Standard, Vegetation, Habitat

Theme keywords biota, farming, environment

Thesaurus
Title ISO 19115 Topic Category




Citation

* Title DS0292_20111205
Publication date 2011-12-05


Presentation formats * digital map


Citation Contacts

Responsible party
Organization's name Vegetation Classification and Mapping Program (VegCAMP), Biogeographic Data Branch, California Department of Fish and Game
Contact's role originator


Resource Details

Dataset languages English(UNITED STATES)


Status completed
Spatial representation type * vector


Supplemental information
A complete report is available at: http://www.nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=18211
* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143


Credits
Aerial Information Systems, Inc. for California Department of Fish and Game, Vegetation Classification and Mapping Program.
ArcGIS item properties
* Name DS0292_20111205
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
ground condition
Temporal extent
Date and time 2005-01-01

Temporal extent
Date and time 2002-01-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -121.885160
* East longitude -121.196867
* North latitude 38.592499
* South latitude 37.623642
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -13568193.992000
* East longitude -13491573.505800
* South latitude 4526394.610600
* North latitude 4663467.455800
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Diana Hickson
Organization's name California Department of Fish and Game
Contact's position Senior Biologist (Botany)
Contact's role point of contact


Contact information
Phone
Voice (916) 327-5956
Fax (916) 324-0475

Address
Type both
Delivery point 1807 13th Street Suite 202
Delivery point Biogeographic Data Branch
City Sacramento
Administrative area CA
Postal code 95814
Country US
e-mail address dhickson@dfg.ca.gov

Hours of service
8:00-5:00pm


Resource Maintenance

Resource maintenance
Update frequency not planned


Resource Constraints

Constraints
Limitations of use
Recognition that this dataset was created by Aerial Information Systems, Inc. for the California Department of Fish and Game. We would also appreciate corrections to the map sent to VegCAMP. Contact Diana Hickson dhickson@dfg.ca.gov

Spatial Reference

ArcGIS coordinate system
* Type Projected
* Geographic coordinate reference GCS_WGS_1984
* Projection WGS_1984_Web_Mercator_Auxiliary_Sphere
* Coordinate reference details
Projected coordinate system
Well-known identifier 102100
X origin -20037700
Y origin -30241100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 2
M tolerance 2
High precision true
Latest well-known identifier 3857
Well-known text PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]

Reference system identifier
* Value 3857
* Codespace EPSG
* Version 7.11.2


Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS0292_20111205
* Object type composite
* Object count 25638



ArcGIS Feature Class Properties
Feature class name DS0292_20111205
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 25638
* Spatial index TRUE
* Linear referencing FALSE



Data Quality

Scope of quality information
Resource level dataset




Data quality report - Quantitative attribute accuracy
Measure description
Map accuracy is detailed in the report, "Sacramento-San Joaquin River Delta Vegetation and Land Use Classification and Map." 2007. Vegetation Classification and Mapping Program, Biogeographic Data Branch California Department of Fish and Game, Sacramento. In general, overall accuracy of the polygons assessed was 88.7%, while the average accuracy of 59 map classes tested for accuracy was 83.3%. 48 types met or exceeded 80% accuracy; 2 types were between 70 and 80% accurate, and 9 types fell below 70% accuracy. The nine types were: Juglans californica, Baccharis pilularis/annual grasses-herbs, Rosa californica, Cornus sericea, Crypsis, Polygonum spp. - mixed forbs, algae, and Eucalyptus. Low accuracy for algae may be due to the time beween the imagery and field work to assess accuracy. Vegetation type attribution may be more accurate in the area covered by the 1-foot GSD (2002) orthoimagery than in the area covered by the 1-meter GSD (2005). Similarly, "attribution resolution" may be greater in the area covered by the 2002 imagery, that is, the photointerpreters may have been able to attribute to a finer scale (association level vs. alliance or super-alliance level) with the higher resolution imagery. However, VegCAMP did not test these differences in the map accuracy assessment. Additionally, vegetation type and cover may have changed between the imagery and map publication dates.




Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
Polygons were delineated using heads-up digitizing via ArcINFO onto the Stockton, Delta, and Sacramento High Resolution Orthoimagery flown at 1-foot ground sample distance (GSD) rectified to National Mapping Standards at 1:12,000 scale for most of the mapping area, and onto National Agricultural Imagery Program (NAIP) imagery flown at a one meter GSD and rectified to the national standards at 1:24,000 scale for the balance of the mapping area (areas not covered by the higher resolution imagery). The following are the minimum mapping units (MMU) and minimum widths (MW) for the project: Land use: 2 acres MMU/25 meters MW Isolated land use: 1 acre MMU/ 10 meters MW Water: 1 acre MMU/10 meters MW Vegetation: 2 acres MMU/10 meters MW Critical vegetation types such as isolated wetlands: 1 acre MMU/10 meters MW Features were occasionally mapped below MMU or minimum width. These features were so distinct or important compared to the surroundings that omitting them would have distorted the representation of the area. Mapping Criteria Land/Water Interface Tidal fluctuations in the Delta and the gradations of signature between "open water" and "upland" necessitated guidelines for delineating the land/water interface: The following conditions were mapped as land: -Upland vegetation, agriculture, urban and vacant areas -Tidal & seasonally flooded mudflats exposed at the time of the imagery -Emergent vegetation (Temporarily to permanently flooded) - including areas that are normally designed for water such as channels & canals These conditions were mapped as water: -Open water as depicted on the baseline imagery -Submerged mudflats at the time the imagery was flown -Flooded areas as a result of levee breakage Floating & submerged (fixed or non fixed rooted) aquatic vegetation were the only types of vegetation mapped in what was coded as water in the land use layer. Occasionally these transitional elements were mapped in the opposite category (e.g., wet mudflats included with land) if doing so allowed linking below-resolution patches into a unit big enough to map. In the cases of tree canopy overhanging the shoreline, the land/water boundary was placed at the presumed location of the tree trunks. Shorelines on small islands may have been expanded outward slightly to meet MMU requirements. Streams Streams that appeared as polygons on the USGS 1:24,000 topographic maps were mapped as water polygons, even if their width tapered to less than 10 meters on the imagery. Canals/Ditches Canals and ditches were mapped as water polygons if the width of the water signature itself was greater than or equal to 10 meters, and that width continued for the majority of the length of the feature. If the width decreased to consistently less than 10 meters, a good visual break (bend, road crossing, etc.) was selected to end the water polygon. Canals and ditches were not delineated as polygons where the width of the water signature was less than 10 meters, even if the berm-to-berm width was greater than 10 meters. A corridor consisting of two or more narrow (<10 meter) ditches and measuring more than 25 meters wide overall was mapped in land use as a Transportation, Communications, and Utilities polygon. Such a polygon was also mapped if the disturbance alongside a single narrow canal or ditch measured 25 meters or more in width. The delineations were made on the outside edges of the disturbance on either side of the corridor. The water in the canals or ditches was not pulled out separately. If the corridor of "ditch/canal-related disturbance" measured less than 25 meters in width, the corridor was not mapped. In ditch corridors as described above, occasionally the water in a ditch widened to 10 meters or more. For continuity, the entire length of the corridor was mapped as a Transportation, Communication, and Utilities polygon. The water was not pulled out separately. Linear Vegetation Features Natural vegetation often occurred along narrow canals and ditches. The total width between the outside edges of the vegetation on either side of the feature sometimes exceeded 10 meters. In these situations, a vegetation polygon was drafted only if the vegetation on one side of the ditch bank was wider than 10 meters, and the entire polygon was larger than one acre. Such a polygon would include vegetation on both sides of the ditch. A vegetation polygon was not pulled out if the vegetation on each bank measured less than 10 meters wide. Windrows were not mapped unless the width of the canopy met or exceeded 10 meters. Trees flanking either side of a narrow road or stream were collected as one vegetation polygon where the canopy width met or exceeded 10 meters. Although normally road centerlines were used to separate land use types, exceptions sometimes occurred where trees were involved. For instance, there were cases where a large area of trees occurred on one side of a road, and a narrow (<10 meter) strip of trees occurred on the other side of the road, which was in turn flanked by cropland. Rather than using the road to separate the natural vegetation from the cropland, the delineation was made on the tree/cropland interface. Land Use Boundaries Fence lines or the centerlines of roads, streams, ditches, etc. were used to separate adjacent land use types. Where these features weren't present, land use boundaries were drawn with consideration for polygons in the vegetation layer. Boundaries were drawn to avoid sliver polygons created when the land use and vegetation layers were superimposed. Conversely, some vegetation boundaries had straight portions due to land use delineations. Cropland and Pasture One challenge in land use mapping was to differentiate between fallow cropland, pasture, and vacant land in agricultural areas. Cropland and pasture were assigned land use code 2100, while vacant land received a code of 3100. The land use data from DWR and from San Joaquin County, as well as field observations, helped in separating these classes. A field was considered to be fallow cropland if it occurred in close proximity to active agriculture and had weeds and grasses growing, but also showed some evidence of recent agricultural activity. Similar fields sometimes occurred on the fringe of in-crop areas. If these fields had shrubs and tall weeds growing, they probably had not been farmed for more than five years. These fields were mapped as vacant. Livestock, fences, watering holes, barns, and other features were used to distinguish pasture. These may have been visible on the imagery or during the field check. If there weren't clear signs of pasture use, the land was mapped as vacant. Even with these rules, the best code for land that was not clearly in agricultural use was sometimes ambiguous. Fields extending more than 70 acres without being divided by fences, paths, etc. were generally coded as vacant. Rice At the outset of the project, the possibility of mapping rice as a separate agricultural class was investigated. This turned out not to be viable, as the signature of rice fields in the Delta region was too variable to map reliably. However, a class corresponding to Flooded Agriculture was added to the land use classification. Some of the polygons with this code may include rice. Orchards Active and recently abandoned orchards were mapped as orchards in land use. Long-abandoned orchards, with trees still standing or with trees removed, were collected as vacant land use. Transportation Corridor This land use class (code = 1410) was reserved for freeways and for city streets that exceeded 25 meters in width. Median vegetation was not pulled out separately. The delineations followed a visible right of way indicator (such as fence line) where present. Otherwise they followed the edge of the paved surface for freeways, or the bottom of the curb for city streets. On-ramps and off-ramps were not included.




Lineage

Process step
Description
Correction to rare vegetation types in Antioch Dunes NWR area by VegCAMP.




Process step
When the process occurred 2011-12-05
Description
Per the data contributor, DFG's Aicha Ougzin, a new field schema was added to the latest version. This was to help crosswalk this dataset to other datasets. MAPUNIT is equal to the Vegetation Type referred to in the final report associated with this mapping classification. In addition, HEIGHT was replaced with HGTCLASS, WHRSIZE was replaced with SIZECLASS, WHR was replaced with CWHRTYPE, and WHRCODE was replaced with CWHRCODE. No other changes have been made.


Process contact
Individual's name Sophie Klenner
Organization's name California Department of Fish and Game
Contact's role processor


Contact information




Process step
Description
Final corrections to attribute values to fix inconsistencies between vegetation types, land uses, and WHR types.




Process step
Description
Final data quality check by VegCAMP, January 2007 to correct missing records in Nat Veg field.


Process contact
Individual's name Diana Hickson
Organization's name Biogeographic Data Branch
Contact's position Senior Biologist (Botany)
Contact's role processor


Contact information
Phone
Voice 916 327-5956
Fax 916 324-0475

Address
e-mail address dhickson@dfg.ca.gov

Hours of service
8-5




Source data
Resolution of the source data
Scale denominator 24000

Source citation
Title Vegetation and Land Use Mapping Sacramento & San Joaquin River Delta
Alternate titles AIS. 2006.


Edition Ver 1


Presentation formats digital map
FGDC geospatial presentation format vector digital data


Responsible party
Organization's name Aerial Information Systems, Inc.
Contact's role originator




Extent of the source data
Description
ground condition
Temporal extent
Date and time 2002-01-01

Temporal extent
Date and time 2005-01-01



Geoprocessing history

Process
Process name Project_1
Date 2007-01-1714:56:44
Tool location C:\Documents and Settings\kwhite\Application Data\ESRI\ArcToolbox\My Toolboxes\1MyTools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-02-1711:42:57
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-03-0815:05:42
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-12-0514:52:53
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-2114:39:45
Tool location c:\program files (x86)\arcgis\desktop10.1\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Distribution

Distributor
Contact information
Individual's name Diana Hickson
Organization's name Biogeographic Data Branch, California Department of Fish and Game
Contact's position Senior Biologist (Botany)
Contact's role distributor


Contact information
Phone
Voice 916 327-5956
Fax 9160 324-0475

Address
Type both
Delivery point 1807-13th Street Ste 202
Delivery point Biogeographic Data Branch
City Sacramento
Administrative area CA
Postal code 95814
Country US
e-mail address dhickson@dfg.ca.gov

Hours of service
8-5


Ordering process
Terms and fees None
Turnaround time
1-2 weeks
Instructions
Contact BIOS Data Librarian, Kristina White, kwhite@dfg.ca.gov



Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/200_299/ds292.zip

Online source
Location http://bios.dfg.ca.gov/

Fields

Details for object DS0292_20111205
* Type Feature Class
* Row count 25638


Field OBJECTID
* Alias OBJECTID
* Data type OID
* Width 4
* Precision 10
* Scale 0
* Field description
Internal feature number.
* Description source
ESRI
* Description of values
Sequential unique whole numbers that are automatically generated.




Field Shape
* Alias Shape
* Data type Geometry
* Width 4
* Precision 0
* Scale 0
Field description
Feature geometry.
Description source
ESRI
Description of values
Coordinates defining the features.




Field DELTAV_ID
* Alias DELTAV_ID
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Unique Polygon Identifier


Field VEG
* Alias VEG
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Code for vegetation type
List of values
Value 1300
Description Temporarily or Seasonally Flooded - Deciduous Forests


Value 1320
Description White Alder (Alnus rhombifolia)
Enumerated domain value definition source


Value 1321
Description Alnus rhombifolia / Salix exigua (Rosa californica)
Enumerated domain value definition source


Value 1322
Description Alnus rhombifolia / Cornus sericea
Enumerated domain value definition source


Value 1330
Description Oregon Ash (Fraxinus latifolia)
Enumerated domain value definition source


Value 1340
Description Box Elder (Acer negundo)
Enumerated domain value definition source


Value 1341
Description Acer negundo - Salix gooddingii
Enumerated domain value definition source


Value 1350
Description Hinds walnut (Juglans X hindsii)
Enumerated domain value definition source


Value 1360
Description Fremont Cottonwood (Populus fremontii)
Enumerated domain value definition source


Value 1370
Description California Sycamore (Platanus racemosa)
Enumerated domain value definition source


Value 1380
Description Black Willow (Salix gooddingii)
Enumerated domain value definition source


Value 1381
Description Salix gooddingii / Wetland Herbs
Enumerated domain value definition source


Value 1382
Description Salix gooddingii - Populus fremontii - (Quercus lobata-Salix exigua-Rubus discolor)
Enumerated domain value definition source


Value 1383
Description Salix gooddingii - Quercus lobata / Wetland Herbs
Enumerated domain value definition source


Value 1384
Description Salix gooddingii / Rubus discolor
Enumerated domain value definition source


Value 2100
Description Sclerophyllous Woodlands
Enumerated domain value definition source


Value 2110
Description Coast Live Oak (Quercus agrifolia)
Enumerated domain value definition source


Value 2200
Description Deciduous Woodlands
Enumerated domain value definition source


Value 2230
Description Valley Oak (Quercus lobata)
Enumerated domain value definition source


Value 2231
Description Quercus lobata / Rosa californica (Rubus discolor - Salix lasiolepis / Carex spp.)
Enumerated domain value definition source


Value 2232
Description Quercus lobata - Acer negundo
Enumerated domain value definition source


Value 2233
Description Quercus lobata - Alnus rhombifolia (Salix lasiolepis - Populus fremontii - Quercus agrifolia)
Enumerated domain value definition source


Value 2234
Description Quercus lobata - Fraxinus latifolia
Enumerated domain value definition source


Value 3000
Description SHRUBLANDS
Enumerated domain value definition source


Value 3200
Description Microphyllous Shrubland
Enumerated domain value definition source


Value 3210
Description Coyotebush (Baccharis pilularis)
Enumerated domain value definition source


Value 3211
Description Baccharis pilularis / Annual Grasses & Herbs
Enumerated domain value definition source


Value 3300
Description Dwarf Shrublands
Enumerated domain value definition source


Value 3310
Description Deerweed (Lotus scoparius)
Enumerated domain value definition source


Value 3311
Description Lotus scoparius - Antioch Dunes
Enumerated domain value definition source


Value 3400
Description Intermittently or Temporarily Flooded Deciduous Shrublands
Enumerated domain value definition source


Value 3410
Description Blackberry (Rubus discolor)
Enumerated domain value definition source


Value 3420
Description California Wild Rose (Rosa californica)
Enumerated domain value definition source


Value 3430
Description Mexican Elderberry (Sambucus mexicana)
Enumerated domain value definition source


Value 3440
Description California Dogwood (Cornus sericea)
Enumerated domain value definition source


Value 3441
Description Cornus sericea - Salix exigua
Enumerated domain value definition source


Value 3442
Description Cornus sericea - Salix lasiolepis / (Phragmites australis)
Enumerated domain value definition source


Value 3450
Description Buttonbush (Cephalanthus occidentalis)
Enumerated domain value definition source


Value 3460
Description Arroyo Willow (Salix lasiolepis)
Enumerated domain value definition source


Value 3461
Description Salix lasiolepis - Mixed brambles (Rosa californica - Vitis californica - Rubus discolor)
Enumerated domain value definition source


Value 3462
Description Salix lasiolepis - (Cornus sericea) / Scirpus spp.- (Phragmites australis - Typha spp.) complex unit
Enumerated domain value definition source


Value 3470
Description Shining Willow (Salix lucida)
Enumerated domain value definition source


Value 3480
Description Narrow-leaf Willow (Salix exigua)
Enumerated domain value definition source


Value 3481
Description Salix exigua - (Salix lasiolepis - Rubus discolor - Rosa californica)
Enumerated domain value definition source


Value 3500
Description Broadleaf Shrublands
Enumerated domain value definition source


Value 3510
Description Silver Lupine (Lupinus albifrons)
Enumerated domain value definition source


Value 3511
Description Lupinus albifrons - Antioch Dunes
Enumerated domain value definition source


Value 4000
Description HERBACEOUS GRASSES
Enumerated domain value definition source


Value 4110
Description Pampas Grass (Cortaderia selloana - C. jubata)
Enumerated domain value definition source


Value 4200
Description Intermittently Flooded Grasslands
Enumerated domain value definition source


Value 4210
Description Saltgrass (Distichlis spicata)
Enumerated domain value definition source


Value 4211
Description Distichlis spicata - Annual Grasses
Enumerated domain value definition source


Value 4212
Description Distichlis spicata - Salicornia virginica
Enumerated domain value definition source


Value 4213
Description Distichlis spicata - Juncus balticus
Enumerated domain value definition source


Value 4220
Description Santa Barbara Sedge (Carex barbarae) Stands
Enumerated domain value definition source


Value 4300
Description Temporarily Flooded Grasslands
Enumerated domain value definition source


Value 4310
Description Giant Cane (Arundo donax)
Enumerated domain value definition source


Value 4320
Description Creeping Wild Rye Grass (Leymus triticoides)
Enumerated domain value definition source


Value 4340
Description Broad-leaf Cattail (Typha latifolia)
Enumerated domain value definition source


Value 4400
Description Seasonally Flooded Grasslands
Enumerated domain value definition source


Value 4401
Description Juncus bufonius (salt grasses)
Enumerated domain value definition source


Value 4402
Description Vernal Pools
Enumerated domain value definition source


Value 4403
Description Juncus balticus - meadow vegetation
Enumerated domain value definition source


Value 4500
Description Semi-permanently Flooded Grasslands
Enumerated domain value definition source


Value 4501
Description Mixed Scirpus Mapping Unit
Enumerated domain value definition source


Value 4502
Description Mixed Scirpus / Floating Aquatics (Hydrocotyle - Eichhornia) Complex
Enumerated domain value definition source


Value 4503
Description Mixed Scirpus / Submerged Aquatics (Egeria-Cabomba-Myriophyllum spp.) complex
Enumerated domain value definition source


Value 4510
Description Hard-stem Bulrush (Scirpus acutus)
Enumerated domain value definition source


Value 4511
Description Scirpus acutus Pure
Enumerated domain value definition source


Value 4512
Description Scirpus acutus - Typha angustifolia
Enumerated domain value definition source


Value 4513
Description Scirpus acutus -Typha latifolia
Enumerated domain value definition source


Value 4514
Description Scirpus acutus - (Typha latifolia) - Phragmites australis
Enumerated domain value definition source


Value 4515
Description Scirpus acutus - Xanthium strumarium
Enumerated domain value definition source


Value 4520
Description California Bulrush (Scirpus californicus)
Enumerated domain value definition source


Value 4521
Description Scirpus californicus - Eichhornia crassipes
Enumerated domain value definition source


Value 4522
Description Scirpus californicus - Scirpus acutus
Enumerated domain value definition source


Value 4530
Description American Bulrush (Scirpus americanus)
Enumerated domain value definition source


Value 4600
Description Tidally Flooded Grasslands
Enumerated domain value definition source


Value 4610
Description Narrow-leaf Cattail (Typha angustifolia)
Enumerated domain value definition source


Value 4611
Description Typha angustifolia - Distichlis spicata
Enumerated domain value definition source


Value 4620
Description California Hair-grass (Deschampsia caespitosa)
Enumerated domain value definition source


Value 4621
Description Deschampsia caespitosa - Lilaeopsis masonii
Enumerated domain value definition source


Value 4630
Description Common Reed (Phragmites australis)
Enumerated domain value definition source


Value 4700
Description Tall & Medium Upland Grasses
Enumerated domain value definition source


Value 4701
Description Ruderal Herbaceous Grasses & Forbs
Enumerated domain value definition source


Value 4710
Description California Annual Grasslands - Herbaceous
Enumerated domain value definition source


Value 4711
Description Bromus diandrus - Bromus hordeaceus
Enumerated domain value definition source


Value 4720
Description Italian Rye-grass (Lolium multiflorum)
Enumerated domain value definition source


Value 4721
Description Lolium multiflorum - Convolvulus arvensis
Enumerated domain value definition source


Value 4722
Description Lolium multiflorum - Triphysaria eriantha
Enumerated domain value definition source


Value 4723
Description Lolium multiflorum - Lasthenia glabrata
Enumerated domain value definition source


Value 4724
Description Lolium multiflorum - Blennosperma nanum
Enumerated domain value definition source


Value 4730
Description Rabbitsfoot grass (Polypogon maritimus)
Enumerated domain value definition source


Value 5000
Description FORBS
Enumerated domain value definition source


Value 5100
Description Tall & Medium Upland Forbs
Enumerated domain value definition source


Value 5110
Description Fennel (Foeniculum vulgare)
Enumerated domain value definition source


Value 5120
Description Poison Hemlock (Conium maculatum)
Enumerated domain value definition source


Value 5200
Description Intermittently Flooded Perennial Forbs
Enumerated domain value definition source


Value 5201
Description Managed Annual Wetland Vegetation (Non-specific grasses & forbs)
Enumerated domain value definition source


Value 5202
Description Shallow flooding with minimal vegetation at time of photography
Enumerated domain value definition source


Value 5203
Description Seasonally flooded undifferentiated annual grasses and forbs
Enumerated domain value definition source


Value 5204
Description Managed alkali wetland (Crypsis)
Enumerated domain value definition source


Value 5205
Description Intermittently or temporarily flooded undifferentiated annual grasses and forbs
Enumerated domain value definition source


Value 5206
Description Scirpus spp. in managed wetlands
Enumerated domain value definition source


Value 5210
Description Birdfoot Trefoil (Lotus corniculatus)
Enumerated domain value definition source


Value 5300
Description Temporarily Flooded Perennial Forbs
Enumerated domain value definition source


Value 5301
Description Smartweed Polygonum spp. - Mixed Forbs
Enumerated domain value definition source


Value 5311
Description Polygonum amphibium
Enumerated domain value definition source


Value 5400
Description Semi-permanently Flooded Forbs
Enumerated domain value definition source


Value 5410
Description Floating Primrose (Ludwigia peploides)
Enumerated domain value definition source


Value 5411
Description Ludwigia peploides
Enumerated domain value definition source


Value 5420
Description Horsetail (Equisetum spp.)
Enumerated domain value definition source


Value 5500
Description Tall & Medium Perennial Forbs (Upland or Tidally Flooded)
Enumerated domain value definition source


Value 5501
Description Alkaline vegetation mapping unit
Enumerated domain value definition source


Value 5502
Description Allenrolfea occidentalis mapping unit
Enumerated domain value definition source


Value 5503
Description Suaeda moquinii - (Lasthenia californica) mapping unit
Enumerated domain value definition source


Value 5504
Description Lasthenia californica mapping unit
Enumerated domain value definition source


Value 5510
Description Alkali Heath (Frankenia salina)
Enumerated domain value definition source


Value 5511
Description Frankenia salina - Distichlis spicata
Enumerated domain value definition source


Value 5512
Description Frankenia salina - Annual Grasses
Enumerated domain value definition source


Value 5520
Description Pickleweed (Salicornia virginica)
Enumerated domain value definition source


Value 5521
Description Salicornia virginica - Distichlis spicata
Enumerated domain value definition source


Value 5522
Description Salicornia virginica - Cotula coronopifolia
Enumerated domain value definition source


Value 5530
Description Perennial Pepperweed (Lepidium latifolium)
Enumerated domain value definition source


Value 5531
Description Lepidium latifolium - Salicornia virginica - Distichlis spicata
Enumerated domain value definition source


Value 5540
Description Tobacco brush (Nicotiana glauca) mapping unit
Enumerated domain value definition source


Value 6000
Description PERMANENTLY FLOODED HYDROMORPHIC-ROOTED
Enumerated domain value definition source


Value 6101
Description Generic Floating Aquatics
Enumerated domain value definition source


Value 6110
Description Water Hyacinth (Eichhornia crassipes)
Enumerated domain value definition source


Value 6201
Description Pondweed (Potamogeton sp.)
Enumerated domain value definition source


Value 6202
Description Riverweed (Ceratophyllum sp.)
Enumerated domain value definition source


Value 6203
Description Waterweed (Elodea sp.)
Enumerated domain value definition source


Value 6210
Description Milfoil - Waterweed (generic submerged aquatics)
Enumerated domain value definition source


Value 6211
Description Brazilian Waterweed (Egeria - Myriophyllum) Submerged
Enumerated domain value definition source


Value 6220
Description Hydrocotyle ranunculoides
Enumerated domain value definition source


Value 6230
Description Sagittaria sanfordii
Enumerated domain value definition source


Value 7000
Description Algae
Enumerated domain value definition source


Value 9000
Description LAND USE - LITTLE OR NO VEGETATION - WATER
Enumerated domain value definition source


Value 9100
Description Urban Developed - Built Up
Enumerated domain value definition source


Value 9200
Description Agriculture
Enumerated domain value definition source


Value 9300
Description Exotic Vegetation Stands
Enumerated domain value definition source


Value 9310
Description Eucalyptus
Enumerated domain value definition source


Value 9320
Description Tree-of-Heaven (Ailanthus altissima)
Enumerated domain value definition source


Value 9330
Description Acacia - Robinia
Enumerated domain value definition source


Value 9400
Description Sparsely or Unvegetated Areas; Abandoned orchards
Enumerated domain value definition source


Value 9401
Description Levee Rock Riprap
Enumerated domain value definition source


Value 9402
Description Salt scalds and associated sparse vegetation
Enumerated domain value definition source


Value 9403
Description Tidal mudflats
Enumerated domain value definition source


Value 9404
Description River blowout, sandy wash
Enumerated domain value definition source


Value 9500
Description Restoration Sites
Enumerated domain value definition source


Value 9501
Description Black Willow (Salix gooddingii) - Valley Oak (Quercus lobata) restoration
Enumerated domain value definition source


Value 9502
Description Valley Oak (Quercus lobata) restoration
Enumerated domain value definition source


Value 9503
Description White Alder (Alnus rhombifolia) - Arroyo willow (Salix lasiolepis) restoration
Enumerated domain value definition source


Value 9800
Description Water
Enumerated domain value definition source


Value 9999
Description Unknown
Enumerated domain value definition source




Field LU
* Alias LU
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Land Use Code
List of values
Value 1000
Description Urban or Built-up Land


Value 1100
Description Residential
Enumerated domain value definition source


Value 1200
Description Commercial and Services
Enumerated domain value definition source


Value 1271
Description Military - Built-up
Enumerated domain value definition source


Value 1272
Description Military - Not Built-up
Enumerated domain value definition source


Value 1300
Description Industrial
Enumerated domain value definition source


Value 1400
Description Transportation, Communications, and Utilities
Enumerated domain value definition source


Value 1410
Description Transportation Corridor
Enumerated domain value definition source


Value 1500
Description Industrial and Commercial Complexes
Enumerated domain value definition source


Value 1700
Description Other Urban or Built-up Land
Enumerated domain value definition source


Value 2000
Description Agricultural Land
Enumerated domain value definition source


Value 2100
Description Cropland and Pasture
Enumerated domain value definition source


Value 2110
Description Flooded Agriculture
Enumerated domain value definition source


Value 2200
Description Orchards, Groves, Vineyards, Nurseries, and Ornamental Horticultural Land
Enumerated domain value definition source


Value 2210
Description Nurseries and Ornamental Horticultural Land
Enumerated domain value definition source


Value 2220
Description Deciduous Orchards
Enumerated domain value definition source


Value 2230
Description Evergreen Orchards
Enumerated domain value definition source


Value 2240
Description Vineyards
Enumerated domain value definition source


Value 2300
Description Confined Feeding Operations
Enumerated domain value definition source


Value 2400
Description Other Agricultural Land
Enumerated domain value definition source


Value 3000
Description Natural Vegetation
Enumerated domain value definition source


Value 3100
Description Vacant
Enumerated domain value definition source


Value 5000
Description Water
Enumerated domain value definition source


Value 5100
Description Streams - Rivers
Enumerated domain value definition source


Value 5200
Description Lakes, Reservoirs and Ponds
Enumerated domain value definition source


Value 5300
Description Canals
Enumerated domain value definition source


Value 5400
Description Areas of Inundation
Enumerated domain value definition source


Value 7000
Description Barren Land
Enumerated domain value definition source


Value 7500
Description Strip Mines, Quarries, and Gravel Pits
Enumerated domain value definition source


Value 7600
Description Transitional Areas - Construction - Scraped Ground
Enumerated domain value definition source




Field LUNAME
* Alias LUNAME
* Data type String
* Width 75
* Precision 0
* Scale 0
Field description
Land Use per Anderson Level II classification


Field NATURALVEG
* Alias NATURALVEG
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Natural Vegetation, Ag/Urban, or Open Water
List of values
Value 1
Description Natural Vegetation


Value 2
Description Human disturbance (agriculture/urban)
Enumerated domain value definition source


Value 3
Description Open water
Enumerated domain value definition source




Field DENSITY
* Alias DENSITY
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Vegetation cover
List of values
Value 1
Description > 60% cover


Value 2
Description 40-60% cover
Enumerated domain value definition source


Value 3
Description 25-40% cover
Enumerated domain value definition source


Value 4
Description 10-25% cover
Enumerated domain value definition source


Value 5
Description 2-10% cover
Enumerated domain value definition source


Value 0
Description No cover (such as open water or urban)
Enumerated domain value definition source




Field CWHRCODE
* Alias CWHRCODE
* Data type String
* Width 3
* Precision 0
* Scale 0
Field description
code assigned to the California Wildlife Habitat Relationships type
Description source
http://www.dfg.ca.gov/biogeodata/cwhr/


Field HGTCLASS
* Alias HGTCLASS
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Code for height of dominant vegetation stratum
List of values
Value 1
Description < 0.5 meter


Value 2
Description 0.5-2 meters


Value 3
Description 2-5 meters


Value 4
Description 5-15 meters


Value 5
Description 15-35 meters


Value 6
Description > 35 meters


Value 9
Description Not applicable


Value 0
Description floating or submerged aquatics




Field SIZECLASS
* Alias SIZECLASS
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
CWHR size class (diameter breast height)
Description source
http://www.dfg.ca.gov/biogeodata/cwhr/
List of values
Value 1
Description seedlings (<1")


Value 2
Description saplings (1-6")


Value 3
Description pole (6-11"))


Value 4
Description small (11-25")


Value 5
Description medium - large (>25")


Value 6
Description multi-layered medium - large trees over smaller trees (>60% cover)


Value 0
Description Unknown (used for unknown vegetation)


Value 9
Description Not applicable




Field HIGHVALUE
* Alias HIGHVALUE
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
High conservation value
Description source
AIS. 2006.
List of values
Value 0
Description Not denoted with high conservation value


Value 1
Description Denoted with high conservation value
Enumerated domain value definition source




Field PERIMETER
* Alias PERIMETER
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Perimeter length in meters


Field AREA_
* Alias AREA_
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
Polygon area in square meters


Field ACRES
* Alias ACRES
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
GIS calculated acres


Field HECTARES
* Alias HECTARES
* Data type Double
* Width 8
* Precision 38
* Scale 8
Field description
GIS calculated hectares


Field CACODE
* Alias CACODE
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
California Natural Community Codes - unique code assigned to alliances and associations


Field NVCSLEVEL
* Alias NVCSLEVEL
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The level of the National Vegetation Classification System Hierarchy that the vegetation type corresponds to
Description source
http://biology.usgs.gov/npsveg/nvcs.html


Field CWHRTYPE
* Alias CWHRTYPE
* Data type String
* Width 30
* Precision 0
* Scale 0
Field description
crosswalk to the California Wildlife Habitat Relationship system
Description source
http://www.dfg.ca.gov/biogeodata/cwhr/


Field NVCSNAME
* Alias NVCSNAME
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The standardized name of the vegetation description used in the National Classification System


Field NVCSMG
* Alias NVCSMG
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The standardized name for the macrogroup within the National Vegetation Classification System that the vegetation type corresponds to
Description source
http://biology.usgs.gov/npsveg/nvcs.html


Field GLOBALRANK
* Alias GLOBALRANK
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The global rarity rank of the plant community mapped (only for alliances) G1 and S1: Fewer than 6 viable occurrences worldwide and/or 2000 acres; G2 and S2: 6-20 viable occurrences worldwide and/or 2000-10,000 acres; G3 and S3: 21-100 viable occurrences worldwide and/or 10,000-50,000 acres; G4 and S4: Greater than 100 viable occurrences worldwide and/or greater than 50,000; G5 and S5: Community demonstrably secure due to secure worldwide and statewide


Field STATERANK
* Alias STATERANK
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The state rarity rank of the plant community mapped (only for alliances) G1 and S1: Fewer than 6 viable occurrences worldwide and/or 2000 acres; G2 and S2: 6-20 viable occurrences worldwide and/or 2000-10,000 acres; G3 and S3: 21-100 viable occurrences worldwide and/or 10,000-50,000 acres; G4 and S4: Greater than 100 viable occurrences worldwide and/or greater than 50,000; G5 and S5: Community demonstrably secure due to secure worldwide and statewide


Field RARE
* Alias RARE
* Data type String
* Width 50
* Precision 0
* Scale 0
Field description
Rarity of the vegetation type. Alliances and associations with state ranks of S1-S3 are considered rare. Y=Rare, N=Not Rare, U=Unknown
List of values
Value Y
Description Yes - Rare


Value N
Description No - Not Rare


Value U
Description Unknown




Field CALVEGCODE
* Alias CALVEGCODE
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
a crosswalk to the CalVeg vegetation system


Field CALVEGNAME
* Alias CALVEGNAME
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
a crosswalk to the CalVeg vegetation system


Field MAPUNIT
* Alias MAPUNIT
* Data type String
* Width 110
* Precision 0
* Scale 0
Field description
Vegetation type (alliance, assocation or mapping unit) per mapping classification


Field UID
* Alias UID
* Data type String
* Width 50
* Precision 0
* Scale 0




Field Shape.STArea()
* Alias Shape.STArea()
* Data type Double
* Width 0
* Precision 0
* Scale 0




Field Shape.STLength()
* Alias Shape.STLength()
* Data type Double
* Width 0
* Precision 0
* Scale 0






Overview Description
Entity and Attribute Overview
Polygon attributes include Land Use (LU) based on Anderson Level II classification; Vegetation Type (VEG) based on a map classification derived from the vegetation classification that was derived from field sampling; a simple classification of whether the polygon is natural vegetation, agriculture/urban, or water (NATURALVEG); density (or cover) class (DENSITY) of the predominant vegetation layer (herb, shrub or tree); the California Wildlife Habitat Relationships class (WHR) as crosswalked from the mapping classification or land use classification; the modal height class of the predominant vegetation layer (HEIGHT); the CWHR size class/dbh (WHRSIZE) and whether the polygon has a high conservation value as habitat (HIGHVALUE). The land use definitions and descriptions were developed by Aerial Information Systems, Inc. as a Modified Anderson Land Use Classification. This classification uses a hierarchical system, allowing easy aggregation and disaggregation of classes for analysis or cartographic purposes. Levels are denoted by x000, xx00, and xx0x, e.g., 1000, 1200, 1271. Most uses are mapped to the second level, with some uses mapped to the third level. Similarly, vegetation types may be aggregated into greater levels of the hierarchy as denoted by x000, xx00, xxx0 (e.g., 5000, 5400, 5411, with xxxx being the finest scale, usually association level or mapping unit). For aggregation purposes, all levels of the hierarchy for both the Land Use and Vegetation fields are provided in this metadata, even though there may be no mapped polygons in the higher levels (e.g., 3000, shrublands), to provide GIS users with suggested aggregation schemes and names. Multiple coding of each polygon for both vegetation and land use allows flexibility in representing complex situations. Natural vegetation could be represented in areas mapped as "water" or "urban" in the other layers. For instance, water with large areas of floating aquatics may have been coded as "Water" in the land use layer but as Eichhornia crassipes (6110) in the vegetation layer. As another example, a park with a large stand of valley oaks could be coded as "Other Urban or Built-up Land" in land use but as Quercus lobata (2230) in vegetation. Areas of significant conservation value (HIGHVALUE) generally fell into three broad categories: 1) Riparian & wetland forests and woodlands including some gallery forests, 2) Tidally and non-tidally flooded marshlands and meadows including seasonally flooded vernal pools and alkali areas, 3) Associated upland annual grasslands generally as a connecting corridor to the above two categories. Criteria Used for determining HIGHVALUE: Total acreage: Generally, aggregations of polygons with natural cover over 15 - 20 acres were included in the assessment; except islands in large natural rivers where all polygon aggregations were included regardless of size. Area to perimeter ratios were factored in when evaluating narrow riparian zones or narrow natural vegetation strips along urban or agricultural interface. Canopy Density: Significance was assigned to denser canopies, especially when the openness of the canopy was due to disturbance related factors such as scraping or burns. Connectivity: Occasionally, less desirable polygons (such as annual herbaceous types) were included in the polygon aggregations to join special areas of concern that may have potential for restoration. Floristic Type: Valley oak gallery forests were given most priority, less natural types such as arroyo willow with mixed brambles were generally included in areas adjacent to more floristically significant stands which are of significant conservation value. Adjacent Land Use & Land Cover: Isolated stands within urban or agricultural areas or narrow strips along urban - agricultural interface were given less significance than areas surrounded by water or adjacent to natural vegetation. Stands adjacent to agriculture were given more significance than stands running through urban areas. Exotic & Invasive Vegetation: For the most part, these polygons were taken out of any aggregations, even if they represented a connection or corridor between significant stands.


Entity and Attribute Detail Citation
"Sacramento-San Joaquin River Delta Vegetation and Land Use Classification and Map." 2007. Vegetation Classification and Mapping Program, Biogeographic Data Branch California Department of Fish and Game, Sacramento. AND this report, attached as an appendix to the above report: "Vegetation and Land Use Mapping Sacramento & San Joaquin River Delta" 2006. Aerial Information Services, Inc.




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 2014-04-28


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata


Created in ArcGIS for the item 2014-03-0615:57:33
Last modified in ArcGIS for the item 2014-04-2809:55:58


Automatic updates
Have been performed Yes
Last update 2014-04-2809:55:58


Metadata Contacts

Metadata contact
Individual's name Diana Hickson
Organization's name California Department of Fish and Game
Contact's position Senior Biologist (Botany)
Contact's role point of contact


Contact information
Phone
Voice 916 327-5956
Fax 916 324-0475

Address
Type both
Delivery point 1807 13th Street St 202
Delivery point Biogeographic Data Branch
City Sacramento
Administrative area CA
Postal code 95814
Country US
e-mail address dhickson@dfg.ca.gov

Hours of service
8-5


Thumbnail and Enclosures

Thumbnail

Enclosure
Enclosure type File
Description of enclosure original metadata
Original metadata document, which was translated yes
Source metadata format fgdc