This data set contains lidar point data (UTM, Zone 11) from a strip of Southern California coastline (including water, beach, cliffs, and top of cliffs) from Long Beach to the US/Mexico border. The data set was created by combining data collected using an Optech Inc. Airborne Laser Terrain Mapper (ALTM) 1225 in combination with geodetic quality Global Positioning System (GPS) airborne and ground-based receivers. The Bureau of Economic Geology, the University of Texas at Austin owns and operates an ALTM 1225 system (serial number 99d118). The system was installed in a twin engine Partenavia P-68 Observer (tail number N6602L) owned and operated by Aspen Helicopter, Inc. The lidar data set described by this document was collected on 18 and 19 October 2005; Julian Days 29105 and 29205 (see Lineage, Source_Information, Source_Contribution for pass information). 99d118 instrument settings for these flights were; laser pulse rate: 25kHz, scanner rate: 26Hz, scan angle: +/- 20deg, beam divergence: narrow, altitude: 300-600m AGL, and ground speed: 95-120kts. Four GPS base stations, Seal Beach and San Onofre on 29105 and Point Loma and Scripps Pier on 29205 (see Lineage, Source_Information, Source_Contribution for coordinates), operated during the survey. Data represented is all points including terrain, vegetation, and structures. This data also contains returns from the water surface. No processing has been done to remove returns from terrain, vegetation, structures or water surfaces. Original contact information: Contact Name: Julie Thomas/Randy Bucciarelli Contact Org: SCBPS/CDIP, Scripps Institution of Oceanography Title: Project Managers Phone: 858-534-3032 This data set is an LAZ (compressed LAS) format file containing LIDAR point cloud data.