Natural Communities Commonly Associated with Groundwater - Wetlands [ds2789]

SDE Feature Class

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Tags
decadal, ecosystem, california, groundwater, groundwater, wetlands, hydrogeology, wetlands, habitat, biota, conservation, environmental resources


Summary

The purpose of the NCCAG Wetland data set is to identify wetlands, streams, seeps, and springs that are commonly associated with groundwater in Californias 517 Groundwater Basins defined in Bulletin 118 (2016). The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 2.1, dated March 9, 2016. The features in the data set were not created by DWR. Data were originally developed by U.S. Fish and Wildlife Service (USFWS), U.S. Geological Survey (USGS), and Andy Zdon and Associates, Inc. Features in the NCCAG dataset were merely extracted from these sources under a set of defined rules and procedures. DWR makes no warranties or guarantees either expressed or implied as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. The official DWR subject matter expert for this data set is Amy Lyons, who may be contacted at 530-528-7439, or at amy.lyons@water.ca.gov. The official DWR GIS Steward for this data set is Wyatt Arnold, who may be contacted at 916-653-4849, or at wyatt.arnold@water.ca.gov. Comments, problems, improvements, updates, or suggestions should be forwarded to the subject matter expert or GIS Steward as available and appropriate.

Description

The Natural Communities Commonly Associated with Groundwater (NCCAG) Wetland dataset is a compilation of regularly flooded natural wetlands and riverine areas as well as springs and seeps extracted from 3 publicly available federal data sets. The extracted wetland and stream features are commonly associated with groundwater due to their flooding frequency or classification as a perennial hydrologic feature. Springs and seeps are commonly associated with groundwater because they are locations where groundwater naturally emerges at the ground surface.

Credits

California Department of Water Resources California Department of Fish and Wildlife The Nature Conservancy, California

Use limitations

This dataset does not prove or make any claim about the nature and/or extent of ecosystem groundwater dependence for any mapped location. Positive identification of a groundwater dependent ecosystem requires detailed understanding of groundwater levels, hydrology, and geology of an area which is not within the scope or purpose of this dataset. The data in the NCCAG dataset do not preempt the authority of local land use agencies.The data in the NCCAG dataset do not alter or infringe upon existing water rights.

Extent

West -124.456091 East -113.601437
North 42.016617 South 32.435423

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 biota, environment, geoscientificInformation


* Content type Downloadable Data
Export to FGDC CSDGM XML format as Resource Description No

Place keywords california

Thesaurus
Title Geographic Names Information System


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Temporal keywords decadal

Theme keywords groundwater, hydrogeology, wetlands, habitat, biota, conservation, environmental resources

Thesaurus
Title ISO 19115 Topic Categories


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Theme keywords ecosystem, groundwater, wetlands

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Citation

Title Natural Communities Commonly Associated with Groundwater - Wetlands [ds2789]
Publication date 2018-04-0100:00:00


Edition 1


Presentation formats digital map
FGDC geospatial presentation format Vector digital data


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Citation Contacts

Responsible party
Organization's name California Department of Fish and Wildlife
Contact's role originator


Responsible party
Organization's name The Nature Conservancy, California
Contact's role originator


Responsible party
Organization's name California Department of Water Resources
Contact's role originator


Responsible party
Individual's name Wyatt Arnold
Organization's name California Department of Water Resources
Contact's position Engineer, Water Resources
Contact's role point of contact


Contact information
Phone
Voice 916-653-4849

Address
Type both
Delivery point 901 P St
City Sacramento
Administrative area CA
Postal code 95814
Country US
e-mail address wyatt.arnold@water.ca.gov

HideContact information


Responsible party
Individual's name Amy Lyons
Organization's name California Department of Water Resources
Contact's position Environmental Scientist
Contact's role point of contact


Contact information
Phone
Voice (530) 528-7439

Address
Type both
Delivery point 2440 Main St.
City Red Bluff
Administrative area CA
Postal code 96080
Country US
e-mail address amy.lyons@water.ca.gov

HideContact information


Responsible party
Individual's name Kirk Klausmeyer
Organization's name The Nature Conservancy
Contact's position Senior Spatial Data Scientist
Contact's role processor


Contact information
Phone
Voice (415) 777-0487

Address
Type postal
Delivery point 201 Mission Street, 4th Floor
City San Francisco
Administrative area CA
Postal code 94105
e-mail address kklausemeyer@tnc.org

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Resource Details

Dataset languages English(UNITED STATES)
Dataset character set utf8 - 8 bit UCS Transfer Format


Status completed
Spatial representation type vector


Graphic overview
File name https://www.water.ca.gov/-/media/DWR-Website/Web-Pages/Programs/Groundwater-Management/Data-and-Tools/Images/Data-Tools-Thumbs/NCCAG_Thumb.png
File description NCCAG dataset full extent map thumbnail
File type PNG

* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.1.7333


Credits
California Department of Water Resources California Department of Fish and Wildlife The Nature Conservancy, California
ArcGIS item properties
* Name Natural Communities Commonly Associated with Groundwater - Wetlands [ds2789]
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

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Extents

Extent
Geographic extent
Bounding rectangle
West longitude -124.456091
East longitude -113.601437
South latitude 32.435423
North latitude 42.016617

Extent
Description
See i02_NCCAG_Sources table for source data publication date
Temporal extent
Beginning date 1972-01-01
Ending date 2015-01-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -124.456091
* East longitude -113.601437
* North latitude 42.016617
* South latitude 32.435423
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -370096.179700
* East longitude 531842.578600
* South latitude -603697.150813
* North latitude 444271.115600
* Extent contains the resource Yes

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Resource Points of Contact

Point of contact
Individual's name Amy Lyons
Organization's name California Department of Water Resources
Contact's position Environmental Scientist
Contact's role point of contact


Contact information
Phone
Voice (530) 528-7439

Address
Type both
Delivery point 2440 Main St.
City Red Bluff
Administrative area CA
Postal code 96080
Country US
e-mail address amy.lyons@water.ca.gov

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HideResource Points of Contact

Resource Maintenance

Resource maintenance
Update frequency as needed


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Resource Constraints

Legal constraints
Limitations of use
See access and use constraints information.
Security constraints
Classification unclassified
Classification system United States government classification system


Additional restrictions
No security restrictions


Constraints
Limitations of use

This dataset does not prove or make any claim about the nature and/or extent of ecosystem groundwater dependence for any mapped location. Positive identification of a groundwater dependent ecosystem requires detailed understanding of groundwater levels, hydrology, and geology of an area which is not within the scope or purpose of this dataset. The data in the NCCAG dataset do not preempt the authority of local land use agencies.The data in the NCCAG dataset do not alter or infringe upon existing water rights.


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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 0.001
M tolerance 0.001
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 8.8(9.3.1.2)


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Spatial Data Properties

Vector
* Level of topology for this dataset geometry only


Geometric objects
Feature class name DS2789_20180821
* Object type composite
* Object count 0

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ArcGIS Feature Class Properties
Feature class name DS2789_20180821
* Feature type Simple
* Geometry type Polygon
* Has topology FALSE
* Feature count 0
* Spatial index TRUE
* Linear referencing FALSE

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Data Quality

Scope of quality information
Resource level dataset


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Data quality report - Topological consistency
Evaluation method
No topological tests performed.


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Data quality report - Conceptual consistency
Measure description
No topological tests performed.


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Data quality report - Completeness omission
Measure description
Seeps and springs were extracted from the Mojave Desert Springs and Waterholes Survey (Andy Zdon & Associates, Inc.) and buffered by 15.42 meters (50 feet) to convert the point data to polygon data. All were included in the NCCAG Wetlands dataset. Seeps and springs were extracted from the National Hydrography Dataset (NHD) for California (U.S. Geological Survey (USGS)) and buffered by 15.42 meters (50 feet) to convert the point data to polygon data. All were included in the NCCAG Wetlands dataset. The U.S. Fish and Wildlife (USFWS) National Wetland Inventory (NWI), Version 2, was intersected with the NWI Project Metadata Layer to include the year of the aerial photo used for wetland mapping (U.S. Fish and Wildlife Service 2016). Each record in the NWI database includes a wetland classification code based on the Cowardin wetland classification (Cowardin et al. 1979). A spreadsheet tool was used to decode wetland types used in California and provide text descriptions of the wetland type and each modifier used. The following wetland types were excluded from the database: Wetlands in the marine or estuarine system; Wetlands in the riverine system and intermittent sub-system; Wetlands with the code used to map vernal pools (i.e., PEM1Ai, PEM1Ci, PEM1Ei); Wetlands special modifiers indicating human modification (i.e., f: Farmed; h: Diked/Impounded; r: Artificial Substrate; x: Excavated; s: Spoil); Wetlands with water regime modifiers that indicated they are artificially, intermittently or temporarily flooded (i.e., K Artificially Flooded; J: Nontidal, Intermittently Flooded; A: Nontidal, Temporarily Flooded); Wetlands with water regime modifiers that indicate the flooding is a result of tidal influence (i.e., Q: Freshwater Tidal, Regularly Flooded; S: Freshwater Tidal, Temporarily Flooded)


HideData quality report - Completeness omission


Data quality report - Quantitative attribute accuracy
Measure description
See i02_NCCAG_Sources table for data source attribute accuracy information and URL to source full metadata


HideData quality report - Quantitative attribute accuracy


Data quality report - Absolute external positional accuracy
Dimension horizontal


Measure description
See i02_NCCAG_Sources for horizontal accuracy reports characterizing each data source.


Quantitative test results
Value 12.2


Evaluation method
Lowest horizontal positional accuracy of all data sources: U.S. Fish and Wildlife Service (USFWS) National Wetland Inventory ) mapped at 1:24,000 scale by USGS 7.5-minute quadrangle. As applied to the USGS 7.5-minute quadrangle topographic map, the horizontal accuracy standard requires that the positions of 90 percent of all points tested must be accurate within 1/50th of an inch (0.05 centimeters) on the map. At 1:24,000 scale, 1/50th of an inch is 40 feet (12.2 meters).


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Lineage

Lineage statement
Citation table appended to data by CDFW
Process step
When the process occurred 2018-01-01
Description
In areas where multiple wetland data overlap, the preference order for the wetlands data was: 1. Mojave Desert Springs and Waterholes Survey; 2. NHD Seeps and Springs; 3. NWI Wetlands. Each data source was clipped to the Bulletin 118 Interim Update 2016 Groundwater Basin boundaries (i08_B118_CA_GroundwaterBasins). Any source features underlying agricultural areas identified in the 2014 statewide Crop Mapping dataset released in 2017 (i15_Crop_Mapping_2014) were removed from the NCCAG dataset. With the exception of narrow riparian corridors, any source features underlying urban areas identified in a compilation of DWR County Land Use Surveys beginning in 2000 through 2014 and the 2014 US Department of Agriculture Cropland Data Layer were removed from NCCAG dataset. In narrow riparian corridors located in mapped urban areas, source features underlying urban areas yet within 100 meters of rivers and waterbodies as mapped in the NHDPlus V2 dataset were retained. A high-level review of features retained in the dataset following processes described above was conducted to remove mapping errors and any features that were most likely dependent on surface water sources. Some of the processing steps mentioned above altered the geometry of the vegetation and wetland polygons to make them smaller than the minimum mapping unit for the source dataset. All features remaining in the NCCAG dataset smaller than the minimum mapping unit of its respective data source were removed. If there was no minimum mapping unit published in the metadata or associated reports for the source dataset, a minimum mapping unit of 1,000 m2 (~1/4 acre) was applied. In some cases, the data source included vegetation or wetland features smaller than the published minimum mapping unit. These features were retained in the NCCAG dataset if they were identical to the polygon in the source dataset (i.e. they had not been modified by the processing steps listed above).


Process contact
Individual's name Kirk Klausmeyer
Organization's name The Nature Conservancy
Contact's position Senior Spatial Data Scientist
Contact's role processor


Contact information
Phone
Voice (415) 777-0487

Address
Type postal
Delivery point 201 Mission Street, 4th Floor
City San Francisco
Administrative area CA
Postal code 94105
e-mail address kklausemeyer@tnc.org

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Geoprocessing history

Process
Date 2018-08-2108:06:36
Tool location c:\program files (x86)\arcgis\desktop10.5\ArcToolbox\Toolboxes\Data Management Tools.tbx\Project
Command issued
Include in lineage when exporting metadata No


Process
Date 2018-08-2108:10:26
Tool location c:\program files (x86)\arcgis\desktop10.5\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


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Distribution

Distributor
Contact information
Organization's name California Department of Water Resources
Contact's role distributor


Contact information
Phone
Voice (916) 653-5791

Address
Type both
Delivery point 901 P St
City Sacramento
Administrative area CA
Postal code 95814
Country US
e-mail address sgmps@water.ca.gov

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Distribution format
* Name SDE Feature Class


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Fields

Details for object DS2789_20180821
* Type Feature Class
* Row count 0


Field ORIGINAL_CODE
* Alias ORIGINAL_CODE
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
Original code for the wetland type.
Description source
Varies; see i02_NCCAG_Sources
Description of values
Variable characters


Beginning date of values 1972-01-01
Ending date of values 2015-01-01


Measurement frequency Unknown


HideFieldORIGINAL_CODE


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.


Beginning date of values 1972-01-01
Ending date of values 2015-01-01


Measurement frequency None planned


HideFieldShape


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.


Beginning date of values 1972-01-01
Ending date of values 2015-01-01


Measurement frequency None planned


HideFieldOBJECTID


Field LAST_MODIFIED_DATE
* Alias LAST_MODIFIED_DATE
* Data type Date
* Width 8
* Precision 0
* Scale 0
Field description
Date record was last modified.
Description source
California Department of Water Resources
Range of values
Minimum value 1012018
Maximum value 1012024
Units of measure mmddyyyy

Beginning date of values 1972-01-01
Ending date of values 2015-01-01


Measurement frequency None planned


HideFieldLAST_MODIFIED_DATE


Field DATE_DATA_REFERS_TO
* Alias DATE_DATA_REFERS_TO
* Data type Date
* Width 8
* Precision 0
* Scale 0
Field description
Year the imagery was taken for mapping this wetland polygon (note: defaults to first day of year).
Description source
Varies; see i02_NCCAG_Sources
Range of values
Minimum value 1011972
Maximum value 1012015
Units of measure mmddyyyy

Beginning date of values 1972-01-01
Ending date of values 2015-01-01


Measurement frequency Unknown


HideFieldDATE_DATA_REFERS_TO


Field WETLAND_NAME
* Alias WETLAND_NAME
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
Name of the mapped wetland type. For each wetland type in the i02_NCCAG_Wetland feature class, each letter from the Cowardin wetland classification was decoded based on the U.S Fish and Wildlife NWI Wetlands and Deepwater Map Code Diagram and compiled into one field (WETLAND_NAME). All seeps and springs were given the WETLAND_NAME Seeps and Springs.
Description source
California Department of Water Resources
Description of values
Variable characters


Beginning date of values 1972-01-01
Ending date of values 2015-01-01


Measurement frequency Unknown


HideFieldWETLAND_NAME


Field COMMENTS
* Alias COMMENTS
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
Any user-provided comments.
Description source
California Department of Water Resources
Description of values
Variable characters


Beginning date of values 1972-01-01
Ending date of values 2015-01-01


Measurement frequency None planned


HideFieldCOMMENTS


Field SOURCE_NAME
* Alias SOURCE_NAME
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
Source name
HideFieldSOURCE_NAME


Field CITATION
* Alias CITATION
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
Citation
HideFieldCITATION


Field REPORT_URL
* Alias REPORT_URL
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
Report URL
HideFieldREPORT_URL


Field DATA_ACCESS_URL
* Alias DATA_ACCESS_URL
* Data type String
* Width 255
* Precision 0
* Scale 0
Field description
URL to access the data
HideFieldDATA_ACCESS_URL


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


HideFieldShape.STArea()


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


HideFieldShape.STLength()


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Overview Description
Entity and Attribute Overview
N/A


Entity and Attribute Detail Citation
N/A


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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 2018-08-21


ArcGIS metadata properties
Metadata format ArcGIS1.0
Metadata style FGDC CSDGM Metadata
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2018-08-2108:05:21
Last modified in ArcGIS for the item 2018-08-2108:06:50


Automatic updates
Have been performed Yes
Last update 2018-08-2108:06:50


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Metadata Contacts

Metadata contact
Individual's name Wyatt Arnold
Organization's name California Department of Water Resources
Contact's position Engineer, Water Resources
Contact's role point of contact


Contact information
Phone
Voice 916-653-4849

Address
Type both
Delivery point 901 P St
City Sacramento
Administrative area CA
Postal code 95814
Country US
e-mail address wyatt.arnold@water.ca.gov

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Metadata Maintenance

Maintenance
Update frequency as needed


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Thumbnail and Enclosures