North Central Coast-Phase 1 & San Francisco Bay GIS Products Metadata Compiled by Seafloor Mapping Lab at California State University Monterey Bay This document provides a general metadata summary of the marine habitat mapping data for the North Central Coast region - from Stinson Beach to Año Nuevo & San Francisco Bay - collected for the California Seafloor Mapping Program (CSMP). This drive also contains legacy data from two surveys in Northern California, Point Cabrillo and Mackerricher State Reserve. Detailed metadata are provided in xml format with each individual data file. Marine data offered here represent the early efforts of a comprehensive state waters mapping program for California launched by the California State Coastal Conservancy, Ocean Protection Council, Department of Fish and Game, and the NOAA National Marine Sanctuary Program. The ultimate goal is the creation of a high-resolution 1:24,000 scale geologic and habitat base map series covering all of California's 14,500 km2 state waters out to the 3 mile limit, and support of the state's Marine Life Protection Act Initiative (MLPA) goal to create a statewide network of Marine Protected Areas (MPAs). This statewide project requires, involves and leverages expertise from industry, resource management agencies and academia. The tiered mapping campaign involves the use of state-of-the-art sonar, LIDAR (aerial laser) and video seafloor mapping technologies; computer aided classification and visualization; expert geologic and habitat interpretations codified into strip maps spanning California's land/sea boundary; and the creation of an online, publicly accessible data repository for the dissemination of all mapping products. NCCMP Phase 1 In December 2005, a California Statewide Marine Mapping Planning Workshop was held (http://seafloor.csumb.edu/StrategicMappingWorkshop.htm) during which participants ranked all state waters between Stinson Beach and Año Nuevo as the highest priority area in need of mapping along the Northern Central California coast (Monterey to Bodega Bay). In the fall of 2006, the California Ocean Protection Council authorized the California Coastal Conservancy (CCC) to fund the CSUMB Seafloor Mapping Lab and its partners- United States Geological Survey, Fugro-Pelagos Inc., and Moss Landing Marine Labs- to begin mapping these areas (North Central Coast Mapping Project). The purpose of the NCCMP Phase I work has been to map the state water seafloor habitats (20m depth out to 3 nmi, with additional inshore surveys of ~20m depth) from Stinson Beach to Año Nuevo. This continuous span of coastline has been broken into 13 sections numbered from CC_Block00 (Stinson Beach) in the north through CC_Block11 (Año Nuevo) in the south. Surveys were conducted on: CC_Block00 March 2-3, 5-9, 2007 - and extended inshore on July 21-22 & August 20, 2007 CC_Block01 October 31 & November 1, 12, 2006 CC_Block02 October 30-31 & November 1-2, 12-13, 2006 - and extended inshore on July 11-12, 15 & September 25, 2007 CC_Block03/04 (in combination with Block 04) October 29-31 & November 1-5, 12-13, 2006 - and extended inshore on July 14-17, 2007 CC_Block05 October 28-31 & November 1-2, 4-6, 12-13, 2006 - and extended inshore on July 13-14, 2007 CC_Block06 October 26-28, November 6-7, 11-13, 2006 & January 27, 29, 2007 - and extended inshore on July 13, 17-20 & August 10, 21, 2007 CC_Block07 November 6-13, 2006 & January 26, 28-31, 2007 - and extended inshore on June 23, August 3,5 & September 25, 2007 CC_Block08 November 7-13, 2006 & January 30, 2007 - and extended inshore on July 28, August 1-2, 5-6, 21 & September 26, 2007 CC_Block09 November 8-13, 2006 & January 24-25, 2007 - and extended inshore on August 6-9, 2007 CC_Block10 November 8, 10-11, 13, December 4-7, 2006 & February 1-2, 2007 - and extended inshore on August 9-10 & September 26, 2007 CC_Block11 November 10-12, December 1, 3-4, 2006 & February 1, 2007 - and extended inshore on September 22-24, 2007 MBES and side scan data for North Central Coast Phase 1 (NCCMP) nearshore region, CC_Block01 to CC_Block11, are a combination of 400KHz Reson 7125 and 244 KHz Reson 8101 sonar data collected aboard the F/V Quicksilver by Fugro Pelagos, Inc. (FPI) and the R/V VenTresca by the Seafloor Mapping Lab (SFML). CC_Block00 (Stinson Beach) and the area surrounding the San Francisco Bay mouth were surveyed entirely by SFML using the Reson 8101 aboard the VenTresca. Prior to data collection, a series of planned survey lines were created using the survey navigation and planning softwareWinFrog (FPI) or Hypack Max GOLD from Hypack, Inc (SFML). An Applanix POS/MV system with TrueHeave processing was used to provide position and attitude data for each vessel during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm). KGPS altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter. Data acquisition, post-processing, and final products derived from multibeam bathymetry data were handled by the Seafloor Mapping Lab at CSUMB. ------------------------------------------ San Francisco Bay Surveys were conducted on: San Francisco Bay Mouth & SF Dunes September 22-October 29, 2004, September 11-October 19, 2005, February 4, 2007 & April 23, 2008 SF West Bay April 23-30 & May 1-3,6, 2008 Presidio Shoals February 5, 2007 Suisun Bay May 1-3, 2008 San Pablo Bay March 16-21, 2006 ------------------------------------------ San Francisco Bay (mouth) 2004-05 The Seafloor Mapping Lab (SFML) at CSUMB conducted the first bathymetric survey of the entrance to the Golden Gate since the 1950s. This survey, done in conjunction with the US Geological Survey (USGS), was carried out to assist with a study of the wave regime and sediment movement at Ocean Beach, San Francisco. Results: the new data reveal that dramatic changes have occurred at the SF Bay mouth since the last bathymetric survey conducted over 50 years ago. Upwards of 6 m of shoaling has occurred in the vicinity of the Army Corps of Engineers (USACE) dredge spoil site, and new patterns in sand bar formation, seen for the first time in the bathymetry, explain the increased beach erosion. The tidal migration of massive dune fields at the bay mouth was also observed and quantified for the first time. These data are being used to develop and refine sediment transport and current models used by USGS and USACE to maintain the SF Bay entrance channel, adopt new dredge spoil disposal strategies and create a beach replenishment program to halt further erosion of Ocean Beach. Bathymetric and backscatter (sidescan) data were collected aboard the R/V VenTresca using a Reson 8101 multibeam echosounder. Prior to data collection a series of survey lines were created using Hypack Max v02.12a GOLD from Coastal Oceanographics. An Applanix POS/MV was used to position the vessel during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm). CNAV data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter. ------------------------------------------ SF West Bay & Presidio Shoals MBES and side scan data for Suisun Bay were collected aboard the R/V VenTresca by the Seafloor Mapping Lab (CSUMB). Prior to data collection, a series of planned survey lines were created using the survey navigation and planning software Hypack Max GOLD from Hypack, Inc. Real-time vessel navigation was via an Applanix POS/MV 320 v4 system (pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm) with input from a Cnav® enabled NAVCON 2050 GPS. See the Positional Accuracy section for full details. ------------------------------------------ San Pablo Bay The Seafloor Mapping Lab (SFML) at CSUMB conducted a multibeam bathymetry survey in San Francisco of the US Army Corps of Engineers San Pablo Bay research area including the SF-10 site. The purpose of the project was to determine bedform and geomorphic changes that have occurred since the last survey in the 1980's. Bathymetric and backscatter (sidescan) data were collected aboard the R/V VenTresca using a Reson 8101 multibeam echosounder. Prior to data collection a series of survey lines were created using Hypack Max v02.12a GOLD from Coastal Oceanographics. An Applanix POS/MV was used to position the vessel during data collection and accounted for vessel motion such as heave, pitch, and roll (position accuracy ± 2m, pitch, roll and heading accuracy ±0.02°, heave accuracy ± 5% or 5cm). CNAV data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems SVPlus sound velocimeter. ------------------------------------------ Point Cabrillo surveys were conducted on: May 8-9, 2001 Mackerricher State Reserve Surveys were conducted on: July 20-21, 2001; August 6-7, 2002 Bathymetric and backscatter (sidescan) data were collected aboard the R/V MacGinite using a Reson 8101 multibeam echosounder. Differential GPS (DGPS) position data were generated by a Trimble 4700 GPS with differential corrections provided by a Trimble ProBeacon receiver. A TSS POS/MV heading and motion sensor provided heave, pitch, heading, and roll data. Coastal Oceanographics Hypack software was used for survey design and execution. All raw data were logged using a Triton-Elics International (TEI) Isis data acquisition system. Water column sound velocity profiles collected using an AML SV+ sound velocity profiler.