Quarterly Water Quality Surveys - Salton Sea [ds429]

SDE Feature Class

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Tags
Imperial County, environment, Salton Sea, Riverside County, salinity, New River, Alamo River, Whitewater River, inlandWaters, biota, California, water quality, monitoring


Summary

These data will be informative to the management of the fisheries, and the efforts to restore the Salton Sea. Water quality data can be analyzed along with associated fish sampling data, to determine whether there is an effect of water quality parameters on fish numbers and/or distribution patterns.

Description

In the spring of 2003, California Department of Fish and Game (CDFG) personnel began quarterly sampling of Salton Sea fish at fourteen stations around the sea, as the basis of a long term monitoring program. In conjunction with this effort, water quality sampling takes place at the same time and place. *Note: This dataset should be viewed with the 'Quarterly Fishery Surveys - Salton Sea [ds428]' dataset. Methods: Eleven sampling sites comprise three broad habitat types: pelagic (3 sites), near-shore (8 sites), and estuarine (3 sites). The pelagic sites are in the approximate middles of the north basin, south basin and inter-basin areas of the Sea. The near-shore sites are spaced widely apart, four each, near the west and east shores, to capture as much breadth of habitat as possible. The estuarine sites are in the body of the Sea, close enough to the mouths of the New, Alamo, and Whitewater Rivers, to be under the influence of their outflows. The three deep water (pelagic) sites were completely unproductive for gill net sampling of fish during the first year of sampling. They have subsequently been dropped from the sampling protocol. Sampling takes place during each of the putative seasons, as follows: spring- April and May; summer- July and August; fall- October and November; winter- January and February. We attempt to compress the total sampling period into as few days as possible, to the extent that the weather, equipment maintenance, and personnel scheduling constraints allow. Nets are set for a 24 hour period. At the time of each set and retrieval of nets, water temperature, conductivity, specific conductivity, dissolved oxygen and sampling depth are measured and recorded, at the approximate mid-net water depth. Measurements are made with a handheld YSI meter, Model 85. Salinity is calculated from the specific conductivity measurement using the following algorithm: Salinity = 0.013(SC2) - 0.233(SC) + 17.102

Credits

Use limitations

Extent

West -116.053162 East -115.621208
North 33.518176 South 33.134544

Scale Range

ArcGIS Metadata

Topics and Keywords

Themes or categories of the resource biota, environment, inlandWaters


* Content type Downloadable Data


Place keywords Imperial County, Salton Sea, Riverside County, New River, Alamo River, Whitewater River, California

Theme keywords salinity, water quality, monitoring

Theme keywords environment, inlandWaters, biota

Thesaurus
Title ISO 19115 Topic Category




Citation

* Title DS0429_20080918
Publication date 2008-08-18


Presentation formats * digital map


Citation Contacts

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


Resource Details

Dataset languages English(UNITED STATES)


Status under development
Spatial representation type * vector


* Processing environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143


ArcGIS item properties
* Name DS0429_20080918
* Location Server=; :; Database=; User=; Version=
* Access protocol ArcSDE Connection

Extents

Extent
Description
ground condition
Temporal extent
Beginning date 2003-04-01
Ending date 2008-07-01

Extent
Geographic extent
Bounding rectangle
Extent type Extent used for searching
* West longitude -116.053162
* East longitude -115.621208
* North latitude 33.518176
* South latitude 33.134544
* Extent contains the resource Yes

Extent in the item's coordinate system
* West longitude -12918978.941500
* East longitude -12870894.026600
* South latitude 3913176.134800
* North latitude 3964286.934800
* Extent contains the resource Yes

Resource Points of Contact

Point of contact
Individual's name Jack Crayon
Organization's name California Department of Fish and Game - Salton Sea Program
Contact's role point of contact


Contact information
Phone
Voice 760 200-9172

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



Resource Maintenance

Resource maintenance
Update frequency quarterly


Resource Constraints

Legal constraints
Other constraints
none - data may be distributed upon request.

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 DS0429_20080918
* Object type point
* Object count 472



ArcGIS Feature Class Properties
Feature class name DS0429_20080918
* Feature type Simple
* Geometry type Point
* Has topology FALSE
* Feature count 472
* Spatial index TRUE
* Linear referencing FALSE



Data Quality

Scope of quality information
Resource level dataset




Data quality report - Conceptual consistency
Measure description
Data collection was started in the spring of 2003, continuing quarterly. Data collection is ongoing as of 2008. Two seasons were missed due to unavailability of launch sites: Fall 2007 and Winter 2007.




Lineage

Process step
When the process occurred 2008-08-18
Description
Converted from UTM Zone 11 NAD 83 into Albers NAD83.


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


Contact information




Geoprocessing history

Process
Process name DefineProjection_1
Date 2008-04-2212:02:28
Tool location C:\Documents and Settings\KWHITE\Application Data\ESRI\ArcToolbox\My Toolboxes\1MyTools.tbx\DefineProjection
Command issued
Include in lineage when exporting metadata No


Process
Date 2011-07-2108:57:39
Tool location C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued
Include in lineage when exporting metadata No


Process
Date 2013-06-2115:21:49
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

Distribution format
* Name SDE Feature Class


Transfer options
Online source
Location ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/400_499/ds429.zip

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

Fields

Details for object DS0429_20080918
* Type Feature Class
* Row count 472


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 DATE_
* Alias DATE_
* Data type Date
* Width 36
* Precision 0
* Scale 0
Field description
The calendar date on which data were recorded.


Field SITE
* Alias SITE
* Data type String
* Width 254
* Precision 0
* Scale 0
Description source
Jack Crayon: Sampling prior to April, 2003 was irregular and opportunistic. Starting in April, 2003, data are part of a regular quarterly sampling protocol, at set locations.
Field description
The name given to each sampling site, based on a nearby landmark.


Field PROBE
* Alias PROBE
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The water depth at which the meter probe recorded data, measured in feet (ft).


Field TEMP_C
* Alias TEMP_C
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The water temperature measured by the meter, in degrees centigrade ( C).


Field CONDUCTIVI
* Alias CONDUCTIVI
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The meter reading for conductivity, measured in millisiemens (mS).


Field SP_CONDUCT
* Alias SP_CONDUCT
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The meter reading for specific conductivity, measured in millisiemens (mS).


Field SALINITY
* Alias SALINITY
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The calculation of water salinity from its measured specific conductivity, using the following formula: [Salinity = 0.013(SC2) - 0.233(SC) + 17.102], expressed in parts per thousand (ppt).


Field DISS_OXYGE
* Alias DISS_OXYGE
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
The meter reading for dissolved oxygen, measured in milligrams per liter (mg/l).


Field COMMENTS
* Alias COMMENTS
* Data type String
* Width 254
* Precision 0
* Scale 0
Field description
Miscellaneous comments.


Field UTM_E
* Alias UTM_E
* Data type Double
* Width 8
* Precision 19
* Scale 6
Description source
Jack Crayon: Prior to the start of regular sampling, in April, 2003, data were collected in the general vicinity of the site name, but not by GPS location.
Field description
The easting value for the Universal Transverse Mercator based coordinates of a sampling site. NAD83 datum.


Field UTM_N
* Alias UTM_N
* Data type Double
* Width 8
* Precision 19
* Scale 6
Field description
The northing value for the Universal Transverse Mercator based coordinates of a sampling site. NAD83 datum.
Description source
Jack Crayon: Prior to the start of regular sampling, in April, 2003, data were collected in the general vicinity of the site name, but not by GPS location.


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.






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 2014-03-0616:18:27
Last modified in ArcGIS for the item 2014-04-2811:43:15


Automatic updates
Have been performed Yes
Last update 2014-04-2811:43:15


Metadata Contacts

Metadata contact
Individual's name Jack Crayon
Organization's name California Department of Fish and Game - Salton Sea Program
Contact's role point of contact


Contact information
Phone
Voice 760 200-9172

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



Thumbnail and Enclosures

Thumbnail

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