United States Geological Survey (USGS), 2008 vector digital data http://pubs.usgs.gov/ds/366/index.html http://pubs.usgs.gov/ds/366/data.html Peter Dartnell Robert Collier Mark Buktenica Steven Jessup Scott Girdner Peter Triezenberg 2008 1.0 Data Series 366 Western Coastal and Marine Geology, Menlo Park, CA U.S. Geological Survey, Coastal and Marine Geology Program http://pubs.usgs.gov/ds/366/index.html ESRI shapefile of lake floor observation recorded during the 2006 video ground-truthing cruise aboard the NPS R/V Neuston. These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) or other software to display 5-m isobaths within Crater Lake, OR. Information for USGS Coastal and Marine Geology related activities are online at <http://walrus.wr.usgs.gov/infobank/n/n106or/html/n-1-06-or.meta.html> 20040806 20080402 ground condition Complete As needed -122.16555054 -122.0498355 42.97851439 42.90490823 General Marine Geology Multibeam Bryophyte Mat Bathymetry Water Depth Ocean Floor Topography U.S. Geological Survey USGS Coastal and Marine Geology Program CMGP ISO 19115 Topic Category elevation inlandWaters imageryBaseMapsEarthCover Geographic Names Information System (GNIS) Crater Lake OR Oregon USA None Please recognize the U.S. Geological Survey (USGS), the National Park Service (NPS), Oregon State University (OSU), and Southern Oregon University (SOU) as the source of this information. USGS-authored or produced data and information are in the public domain. Peter Dartnell U.S. Geological Survey, Coastal and Marine Geology Physical Scientist mailing and physical address

345 Middlefield Rd MS-999

Menlo Park CA 94025-3561 USA (650) 329-5460 (650) 329-5411 pdartnell@usgs.gov http://pubs.usgs.gov/ds/366/images/video_ops.jpg Illustration of point coverage with real-time lake floor observations recorded during 2006 ground-truthing cruise data set. JPEG These data contain attributes automatically generated by ESRI ArcGIS software, defined by the source, and additional user-defined attributes for use in analysis or model development. These data represent video observations recorded during August 2006 lake floor video survey. Complete unknown not applicable U.S. Geological Survey 200103 raster digital data Menlo Park, CA U.S. Geological Survey http://wrgis.wr.usgs.gov/dds/dds-72/index.htm online 2001 publication date dds-72 base material Using the 2000 multibeam data as basemaps, a camera sled was towed behind the NPS RV Neuston and collected over 23 line kilometers of regular and high-definition video. For scale, paired lasers were associated with each video camera and were spaced 16 cm apart. The video cameras had a real-time feed up to the R/V Neuston where the video could be observed as well as recorded onto miniDV tapes. From these video, real-time observations such as presence or absence of the bryophyte mat, as well as the lake floor composition (rock, sediment) were recorded every minute into a navigational system (YoNav). Each observation was stamped with a time and a geographic coordinate based on differential GPS. The observations were converted into an ESRI shapefile. 2006 Peter Dartnell U.S. Geological Survey, Coastal and Marine Geology Physical Scientist mailing and physical address

345 Middlefield Rd MS-999

Menlo Park CA 94025-3561 USA (650) 329-5460 (650) 329-5411 pdartnell@usgs.gov Vector Elliptical arc 1 Universal Transverse Mercator 10 0.9996 -123.00000 0.00000 500000.0 0.00 coordinate pair 2.0 2.0 Meters WGS84 WGS84 6378137.00 meters 0.003352811 map_limits name of shapefile none FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. AREA Area of point ESRI NA PERIMETER Perimeter of point ESRI NA VIDEOOPS_ Internal feature number ESRI Coordinates defining the features. VIDEOOPS_1 Internal feature number ESRI Coordinates defining the features. LONG Geographic Coordinate (Longitude) ESRI Coordinates defining the features. LAT Geographic Coordinate (Latitude) ESRI Coordinates defining the features. TIME Time of observation (UTC) ESRI Time defining the features. Comment Lake Floor Observation ESRI Observation defining the features. U.S. Geological Survey, Information Services mailing and physical address

345 Middlefield Rd MS-532

Menlo Park CA 94025-3561 USA (650) 329-4309 N-1-06-OR data sets These data not intended for navigational purposes. Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Neither the U.S. Government nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy. ESRI shapefile 9.1 none None 20080407 Peter Dartnell U.S. Geological Survey, Coastal and Marine Geology Physical Scientist mailing and physical address

345 Middlefield Rd MS-999

Menlo Park CA 94025-3561 USA (650) 329-5460 (650) 329-5411 pdartnell@usgs.gov Content Standard for Digital Geospatial Metadata ("CSDGM version 2") FGDC-STD-001-1998 universal time