Salton Sea 5 ft Bathymetric Contour

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Althiser, Kenneth C.

Publication_Date: September 1999

Title: Salton Sea 5 ft Bathymetric Contour

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage:

http://www.institute.redlands.edu/salton/downloads/shapefiles/SS_Bathymetry_5ft.zip

Description:

Abstract:

This data set contains bathymetric isolines for the Salton Sea at an interval of five feet. This data was generated from the sounding points taken by Bureau of Reclamation staff as part of a reconnaissance study perfomed for the Salton Sea Science Advisory Committee. This data has been extensively computer-generalized and manually smoothed using a graphic editor. Every fifth contour has also been coded as an index contour to mimic conventional symbolization of topography and bathymetry, and all contours have been assigned both elevation and depth.

Purpose:

This data was automated to support normal graphic products of the Salton Sea in which depth or elevation of the lake bed are required. For engineering purposes, the user should return to the original sounding points to regenerate a lake floor surface, but for cartographic depiction, this database should be sufficient.

Supplemental_Information:

Initially upon generation, many contours overlapped as an artifact of the arc interpolation techniques, and due to the state of the points, which display anomalous linear patterns indicative of a certain degree of error within specific transects. These linear patterns were largely filtered out in generating the isolines, but some topographic features suggestive of islands may be remaining artifacts of the data points and their interpolation. This data is considered preliminary, and will be updated once additional shoreline and sounding data becomes available.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: September 1999

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -116.085836

East_Bounding_Coordinate: -115.588539

North_Bounding_Coordinate: 33.534370

South_Bounding_Coordinate: 33.090317

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: bathymetry

Theme_Keyword: isolines

Theme_Keyword: contours

Theme_Keyword: sounding points

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: Elevation and derived products

Place:

Place_Keyword: Salton Sea

Access_Constraints: None.

Use_Constraints: None.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Althiser, Kenneth C.

Contact_Organization: Redlands Institute, University of Redlands

Contact_Position: Senior GIS Analyst

Contact_Address:

Address_Type: mailing and physical address

Address: 1200 East Colton Avenue

Address: PO Box 3080

City: Redlands

State_or_Province: CA

Postal_Code: 92373

Country: United States of America

Contact_Voice_Telephone: (909) 335-5268

Contact_Facsimile_Telephone: (909) 307-6952

Contact_Electronic_Mail_Address: ken_althiser@institute.redlands.edu

Browse_Graphic:

Browse_Graphic_File_Name: None

Security_Information:

Security_Classification_System: None

Security_Classification: Unclassified

Security_Handling_Description: None

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780

Cross_Reference:

Citation_Information:

Title: None

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The data fields have been filled in such that attribute accuracy is considered to be 100%, which has been manually verified in ArcMap.

Logical_Consistency_Report:

The data is complete, and was checked for topological consistency using the ArcInfo command CLEAN, and the linework was verified using the ArcInfo command BUILD using the LINE option.

Completeness_Report:

The dataset was generalized from the contours initially generated from the sounding point data provided using a weed tolerance of twentyfive meters and a degree of triangular subdivision of five for contour smoothing.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: Estimated to be +/- five feet.

Lineage:

Process_Step:

Process_Description:

Original bathymetric sounding points were used to generate a TIN model, which was then clipped to the boundary (shoreline) of the Salton Sea. Bathymetric isolines (contours) were then generated using the TINCONTOUR command, and the resulting coverage was editing in ARCEDIT to eliminate overlaps in the contours, and "spike" errors which extended shoreward onto land from the Sea. The linework was assigned attributes and run through standard quality assurance measures.

Source_Used_Citation_Abbreviation: r:\salton\ssdp\gis\base\elev\bathymetry\bath_cont1m

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Althiser, Kenneth C.

Contact_Organization: Redlands Institute, University of Redlands

Contact_Position: Senior GIS Analyst

Contact_Address:

Address_Type: mailing and physical address

Address: 1200 E Colton

City: Redlands

State_or_Province: CA

Postal_Code: 92373

Country: USA

Contact_Voice_Telephone: 909-335-5268

Contact_Facsimile_Telephone: 909-307-6952

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=ri-devcomp-1; Service=5151; Database=sde; User=sa; Version=sde.DEFAULT

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=ri-dbserv-2.institute.redlands.edu; Service=5151; Database=sde; User=sde; Version=sde.DEFAULT

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=ri-dbserv-2.institute.redlands.edu; Service=5181; Database=sde_temp; User=sde_admin; Version=sde.DEFAULT

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=ri-dbserv-2; Service=5151; Database=sde; User=sde_admin; Version=sde.DEFAULT

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=ri-dbserv-2.institute.redlands.edu; Service=5185; Database=sde_ssdp; User=sde_admin; Version=sde.DEFAULT

Cloud_Cover: N/A

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 116

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Label point

Point_and_Vector_Object_Count: 116

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 116

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 4

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Label point

Point_and_Vector_Object_Count: 32

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Resolution: 1.000000

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: SS_Bathymetry_5ft

Attribute:

Attribute_Label: SHAPE

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: ACREAGE

Attribute:

Attribute_Label: BATH_CONT5

Attribute:

Attribute_Label: OBJECTID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: INTERVAL

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: BATH_CON_1

Attribute:

Attribute_Label: SHAPE_area

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: SHAPE_len

Detailed_Description:

Entity_Type:

Entity_Type_Label: bath_cont5ft.pat

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: AREA

Attribute_Definition: Area of feature in internal units squared.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: PERIMETER

Attribute_Definition: Perimeter of feature in internal units.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: BATH_CONT5FT#

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: BATH_CONT5FT-ID

Attribute_Definition: User-defined feature number.

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: INTERVAL

Attribute:

Attribute_Label: ACREAGE

Attribute:

Attribute:

Distribution_Information:

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 5.137

Metadata_Reference_Information:

Metadata_Date: 20060906

Metadata_Review_Date: 20030724

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Redlands Institute, University of Redlands

Contact_Person: Althiser, Kenneth C.

Contact_Position: Senior GIS Analyst

Contact_Address:

Address_Type: mailing and physical address

Address: 1200 East Colton Avenue

Address: PO Box 3080

City: Redlands

State_or_Province: CA

Postal_Code: 92373

Country: United States of America

Contact_Voice_Telephone: (909) 335-5268

Contact_Facsimile_Telephone: (909) 307-6952

Contact_Electronic_Mail_Address: ken_althiser@institute.redlands.edu

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification_System: None

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: None

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile