DOQ's around Lake Mead - 4m/pixel resolution: UTM, Zone 11 projection

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: VeeAnn A. Cross

Publication_Date: 2003

Title:

DOQ's around Lake Mead - 4m/pixel resolution: UTM, Zone 11 projection

Geospatial_Data_Presentation_Form: remote-sensing image

Online_Linkage:

Larger_Work_Citation:

Citation_Information:

Originator: David C. Twichell

Originator: VeeAnn A. Cross

Originator: Stephen D. Belew

Publication_Date: 2003

Title:

Mapping the floor of Lake Mead (Nevada and Arizona): Preliminary discussion and GIS data release

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 03-320

Publication_Information:

Publication_Place: Woods Hole Field Center, Woods Hole, MA

Publisher: U.S. Geological Survey

Description:

Abstract:

Lake Mead is a large interstate reservoir located in the Mojave Desert of southeastern Nevada and northwestern Arizona. It was impounded in 1935 by the construction of Hoover Dam and is one of a series of multi-purpose reservoirs on the Colorado River. The lake extends 183 km from the mouth of the Grand Canyon to Black Canyon, the site of Hoover Dam, and provides water for residential, commercial, industrial, recreational, and other non-agricultural users in communities across the southwestern United States. Extensive research has been conducted on Lake Mead, but a majority of the studies have involved determining levels of anthropogenic contaminants such as synthetic organic compounds, heavy metals and dissolved ions, furans/dioxins, and nutrient loading in lake water, sediment, and biota (Preissler, et al., 1998; Bevans et al, 1996; Bevans et al., 1998; Covay and Leiker, 1998; LaBounty and Horn, 1997; Paulson, 1981). By contrast, little work has focused on the sediments in the lake and the processes of deposition (Gould, 1951). To address these questions, sidescan-sonar imagery and high-resolution seismic-reflection profiles were collected throughout Lake Mead by the USGS in cooperation with researchers from University of Nevada Las Vegas (UNLV). These data allow a detailed mapping of the surficial geology and the distribution and thickness of sediment that has accumulated in the lake since the completion of Hoover Dam. Results indicate that the accumulation of post-impoundment sediment is primarily restricted to former river and stream beds that are now submerged below the lake while the margins of the lake appear to be devoid of post-impoundment sediment. The sediment cover along the original Colorado River bed is continuous and is typically greater than 10 m thick through much of its length. Sediment thickness in some areas exceeds 35 m while the smaller tributary valleys typically are filled with less than 4 m of sediment. Away from the river beds that are now covered with post-impoundment sediment, pre-impoundment alluvial deposits and rock outcrops are still exposed on the lake floor.

Purpose:

This image is provided to aid with the regional perspective of the lake.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19960118

Ending_Date: 19960503

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -114.962298

East_Bounding_Coordinate: -113.956948

North_Bounding_Coordinate: 36.598148

South_Bounding_Coordinate: 35.957154

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: CMGP

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: digital orthophoto quadrangle

Theme_Keyword: DOQ

Theme_Keyword: images

Theme_Keyword: mosaic

Theme_Keyword: Mr. SID

Theme_Keyword: OFR03-320

Theme_Keyword: Open-File report

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Woods Hole Field Center

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: Arizona

Place_Keyword: Black Canyon

Place_Keyword: Boulder Basin

Place_Keyword: Colorado River

Place_Keyword: Gregg Basin

Place_Keyword: Hoover Dam

Place_Keyword: Iceberg Canyon

Place_Keyword: Lake Mead

Place_Keyword: Las Vegas

Place_Keyword: Las Vegas Bay

Place_Keyword: Las Vegas Wash

Place_Keyword: Mojave Desert

Place_Keyword: Nevada

Place_Keyword: Overton Arm

Place_Keyword: United States

Place_Keyword: Virgin Basin

Place_Keyword: North America

Access_Constraints: none

Use_Constraints:

The U.S. Geological Survey must be referenced in any future products or research derived from these data.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: VeeAnn A. Cross

Contact_Organization: U.S. Geological Survey

Contact_Position: Marine Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2251

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: vatnipp@usgs.gov

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700

Cross_Reference:

Citation_Information:

Originator: H.E. Bevans

Originator: S.L. Goodbred

Originator: J.F. Miesner

Originator: S.A. Watkins

Originator: T.S. Gross

Originator: N.D. Denslow

Originator: T. Choeb

Publication_Date: 1996

Title:

Synthetic organic compounds and carp endrocrinology and histology, Las Vegas Wash and Las Vegas and Callville bays of Lake Mead Nevada

Series_Information:

Series_Name: Water-Resources Investigations

Issue_Identification: 96-4266

Publication_Information:

Publisher: U.S. Geological Survey

Cross_Reference:

Citation_Information:

Originator: H.E. Bevans

Originator: M.S. Lico

Originator: S.J. Lawrence

Publication_Date: 1998

Title:

Water quality in the Las Vegas Valley area and the Carson and Truckee River basins, Nevada and California, 1992-1996

Series_Information:

Series_Name: Circular

Issue_Identification: 1170

Publication_Information:

Publisher: U.S. Geological Survey

Cross_Reference:

Citation_Information:

Originator: K.J. Couvay

Originator: T.J. Leiker

Publication_Date: 1998

Title:

Synthetic organic compounds in water and bottom sediment from streams, detention basins, and sewage-treatment plant outfalls in Las Vegas Valley, Nevada, 1997

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 98-633

Publication_Information:

Publisher: U.S. Geological Survey

Cross_Reference:

Citation_Information:

Originator: J.F. LaBounty

Originator: M.J. Horn

Publication_Date: 1997

Title:

The influence of drainage from the Las Vegas Valley on the limnology of Boulder Basin, Lake Mead, Arizona-Nevada

Series_Information:

Series_Name: Journal of Lake and Reservoir Management

Issue_Identification: v. 13

Cross_Reference:

Citation_Information:

Originator: L.J. Paulson

Publication_Date: 1981

Title:

Nutrient management with hydroelectric dams on the Colorado River

Series_Information:

Series_Name: Technical Report

Issue_Identification: #8

Publication_Information:

Publication_Place:

Department of Biological Sciences, University of Nevada, Las Vegas, Nevada

Publisher: Lake Mead Limnological Research Center

Cross_Reference:

Citation_Information:

Originator: A.M. Preissler

Originator: G.A. Roach

Originator: K.A. Thomas

Originator: J.W. Wilson

Publication_Date: 1998

Title: Water resources data, Nevada, water year 1998

Series_Information:

Series_Name: Water Resources Data Nevada

Issue_Identification: NV-98-1

Publication_Information:

Publisher: U.S. Geological Survey

Data_Quality_Information:

Logical_Consistency_Report: These images were collected and processed consistently.

Completeness_Report:

This mosaic represents the complete mosaic necessary to cover the study area.

Lineage:

Process_Step:

Process_Description:

Mr. Sid image compression software was used to mosaic 57 individual DOQ's into a single Mr. Sid image.

Process_Step:

Process_Description:

This large Mr. Sid image was then reprojected from it's original UTM coordinates to a TIF image with geographic coordinates, downsampled to 4m/pixel by BlueMarble's geographic transformer.

Process_Step:

Process_Description:

This 4m/pixel TIF image was then reprojected to UTM, Zone 11 by BlueMarble geographics software.

Process_Step:

Process_Description: The 4m/pixel TIF image was then compressed to a Mr. Sid image.

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Pixel

Row_Count: 17212

Column_Count: 22143

Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 11

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -117.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 4.000000

Ordinate_Resolution: 4.000000

Planar_Distance_Units: meters

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

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Band_1

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: Value

Attribute:

Attribute_Label: Count

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David C. Twichell

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2266

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: dtwichell@usgs.gov

Resource_Description: Downloadable Data

Distribution_Liability:

These data were prepared by an agency of the United States Government. Neither the United States government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Although all data published in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 21.437

Metadata_Reference_Information:

Metadata_Date: 20031006

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: VeeAnn A. Cross

Contact_Organization: U.S. Geological Survey

Contact_Position: Marine Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2251

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: vatnipp@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

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

Profile_Name: ESRI Metadata Profile