Depth maps from "Hydraulic and Substrate Maps of Reaches Used by Sturgeon (Genus Scaphirhynchus) in the Lower Missouri River, 2005-07"

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Title:
Depth maps from "Hydraulic and Substrate Maps of Reaches Used by Sturgeon (Genus Scaphirhynchus) in the Lower Missouri River, 2005-07"
Publication_Date: 2008
Originator: Joanna M. Reuter
Originator: Robert B. Jacobson
Originator: Caroline M. Elliott
Originator: Harold E. Johnson, III
Originator: Aaron J. DeLonay
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: U.S. Geological Survey Data Series
Issue_Identification: Data Series 386
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Description:
Abstract:
A collection of reach-scale maps of hydraulic and substrate characteristics were generated for the habitat-use portion of an interdisciplinary sturgeon research project on the Lower Missouri River (from Gavins Point Dam to the junction with the Mississippi River). The maps were derived from hydroacoustic data sets that were collected for the purpose of assessing physical aquatic habitat in the vicinity of locations of adult shovelnose sturgeon (Scaphirhynchus platorynchus) and pallid sturgeon (S. albus). Hydroacoustic data sets were collected at the reach scale (mean reach length, 2.4 kilometers) in order to include the immediate vicinity of a targeted sturgeon location as well as the full range of habitat available at the bend and crossover scale. Reaches typically were surveyed on the day following the relocation of a telemetered sturgeon and at a discharge within 10 percent of the discharge on the sturgeon relocation date in order to characterize as closely as possible the channel morphology and flow-field conditions at the time that the sturgeon was present. One hundred fifty-three reaches were mapped during April-September in the years 2005 through 2007, with the majority of data collection occurring in the months of May and June (coinciding with the period of sturgeon migration and spawning in the Lower Missouri River). Interpolated maps (grid cell size, 5 meters) depict depth, generalized substrate, and depth-averaged velocity. Side-scan sonar imagery is also available for a subset of reaches.
Purpose:
The maps were derived from hydroacoustic data sets that were collected for the purpose of assessing physical aquatic habitat in the vicinity of locations of adult shovelnose sturgeon (Scaphirhynchus platorynchus) and pallid sturgeon (S. albus).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050405
Ending_Date: 20070717
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -97.442
East_Bounding_Coordinate: -90.295
North_Bounding_Coordinate: 49.955
South_Bounding_Coordinate: 38.485
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: inlandWaters
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Missouri
Place_Keyword: Kansas
Place_Keyword: Iowa
Place_Keyword: Nebraska
Place_Keyword: South Dakota
Place_Keyword: USA
Access_Constraints: none
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Columbia Environmental Research Center
Contact_Address:
Address_Type: mailing and physical address
Address: 4200 New Haven Road
City: Columbia
State_or_Province: MO
Postal_Code: 65201
Country: USA
Contact_Voice_Telephone: 573-875-5399
Data_Set_Credit:
Funding for this project was provided by the U.S. Army Corps of Engineers (USACE), Missouri River Recovery–Integrated Science Program and the U.S. Geological Survey (USGS). This work was part of the Comprehensive Sturgeon Research Project, a large, interdisciplinary, multiyear research project to which numerous individuals contributed. The following individuals, in particular, deserve mention: Matt Smith, Chad Vishy, Mark Laustrup, David Gaeuman, Kim Chojnacki, Emily Tracy-Smith, and Sandy Clark-Kolaks. Sturgeon tracking crews, under the supervision of Aaron DeLonay, were also essential to this work.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.5.1450
Data_Quality_Information:
Logical_Consistency_Report:
Each individual reach map depicts physical conditions dependent on the discharge and channel morphology at the time of mapping; both of these factors are dynamic on the Lower Missouri River. For more information, see associated report: Reuter and others, 2008, USGS Data Series Report 386.
Completeness_Report:
Maps represent conditions in parts of the reach deep enough for the boat to navigate. In some cases, patches of data are missing due to poor quality GPS data or equipment malfunction. Some reaches are shorter than their planned length due to onset of inclement weather. For more information, see associated report: Reuter and others, 2008, USGS Data Series Report 386.
Lineage:
Process_Step:
Process_Description:
Hydroacoustic instrumentation included single-beam echo sounders, RoxAnn instruments (Marine Microsystems and Sonavision, Ltd., Aberdeen, United Kingdom), and acoustic Doppler current profilers (ADCP; Teledyne RD Instruments, Poway, California). Computers logged hydroacoustic data while the boat was driven along the planned transects from bank to bank or as depth allowed; transects ended where the water was too shallow for the boat to navigate (at depths less than approximately 0.6 meter). Boat speeds typically averaged around 2 meters per second for a survey, generally with lower speeds in shallow or slow water. In general, data collection followed standard procedures for hydroacoustic data as described in Elliott and others (2004). Two boats were used for the collection of depth, substrate, and velocity data: the R/V (research vessel) Lucien M. Brush and the R/V Slim Funk (fig. 4). Both boats had mounts that suspended the echo sounder and ADCP transducers in the water on the starboard side of the boat near the bow. The GPS antenna was mounted above the transducers. The R/V Funk worked primarily in the upstream segments of the river (Gavins Point, Ponca, Big Sioux, and Platte; fig. 1 of Reuter and others, 2008). The R/V Brush worked in the downstream segments (Kansas, Grand, and Osage). The instrument configuration varied slightly between the boats and from year to year (table 1 of Reuter and others, 2008). Depth data sets were generally collected with high-resolution, single-beam Hydrotrac echo sounders (Odom Hydrographic Systems, Inc., Baton Rouge, Louisiana). (The exception is that the R/V Brush did not have a Hydrotrac echo sounder installed in 2005, so depths were determined from ADCP data for that year.) Each echo sounder was calibrated regularly by using standard bar-check procedures: A metal plate was suspended below the echo-sounder transducer at alternating depths of one and two meters, and the speed of sound and draft were adjusted as needed to read the correct depth. Bar checks were performed approximately one time per week or as needed due to changes in water temperature. Data-collection rates of 5 hertz (Hz) were used along cross-sectional transects; collection rates were either 5 or 10 Hz for longitudinal profiles. A laptop computer logged depth data using Hypack software (version 4.3 or 4.3a Gold). Depth data were logged simultaneously with substrate and GPS data. Depth data values were visually inspected in cross-sectional view during collection, and gain was adjusted as needed to maximize data quality. Depth maps were derived from echo-sounder data for most surveys (table 1 of Reuter and others, 2008). Echo-sounder data sets were edited in Hypack software by viewing each transect in cross-sectional view and removing data points with spurious depth values. Spurious depth data were associated with fish or rapidly varying bed conditions that prevented acquisition of accurate depth values. Depth data sets were exported to text files, and a Python script was used to convert the text files containing point locations and attributes to shapefiles. Blanking polygons were digitized on screen to define the spatial extent of the reach to which data could reasonably be interpolated based on the extent of the echo-sounder points. In a few reaches, depth values recorded by either the RoxAnn or the ADCP were used to supplement transects with missing echo-sounder data. A Python script automated the remaining map-production steps; these steps accomplish the interpolation of point data values to a 5-meter grid. Point data sets were prepared for interpolation by using filters to reduce the point density because point spacing of raw data along transects is very dense relative to the grid-cell size. The interpolation technique utilized was ordinary kriging, executed with the ArcGIS kriging tool from ArcToolbox. Variance of prediction grids were generated as an assessment of uncertainty of kriged values. Grids were finalized by cropping to the extent of the associated blanking polygons. For surveys lacking echo-sounder data, depth grids were generated from ADCP data sets. This applies to most of the reaches from 2005 in the Osage, Grand, and Kansas segments because the R/V Brush did not have an echo sounder in that year (table 1). The ADCP data sets contain depth data at each of four beam locations for each data ensemble. Depth data from the ADCP were obtained by computing the position and depth for each of the four beams and exporting these values to a shapefile. Kriging and blanking procedures were similar to those used for the echo sounder data, although different kriging parameters were used because of the different spatial distribution of data points.
Process_Date: 2005-2007
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 15
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -93.000000
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: 5.000000
Ordinate_Resolution: 5.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Columbia Environmental Research Center
Contact_Address:
Address_Type: mailing and physical address
Address: 4200 New Haven Rd
City: Columbia
State_or_Province: MO
Postal_Code: 65201
Country: USA
Contact_Voice_Telephone: 573-875-5399
Contact_Facsimile_Telephone: 573-876-1896
Resource_Description: U.S. Geological Survey Data Series 386
Distribution_Liability:
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a U.S. Geological Survey server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Custom_Order_Process: Please contact distributor.
Metadata_Reference_Information:
Metadata_Date: 20081104
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Joanna M. Reuter
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 4200 New Haven Road
City: Columbia
State_or_Province: MO
Postal_Code: 65201
Country: USA
Contact_Voice_Telephone: 573-875-5399
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
Generated by mp version 2.9.8 on Fri Feb 20 15:17:28 2009