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In January of 2007, California Department of Water Resources tasked a team consisting of the URS Corporation and Fugro EarthData to obtain and process high resolution topographic data using lidar. The project area encompassed the Sacramento-San Joaquin Delta, Suisan Marsh, and the Los Vaqueros reservoir in California. Total project area in square miles was 1646 with a 100-ft buffer along the project boundary. The aerial lidar survey for this purpose was collected at a nominal 1-meter post spacing. Airborne 1 flew the lidar and processed the boresight calibration, Towill Inc. surveyed the ground control, and Fugro EarthData Inc. did all the lidar processing. The major acquistion window occurred in Jan/Feb of 2007 with reflights completing during Feb/March of 2008. The processed lidar was delivered in ascii, las, and ESRI geodatabase formats along with 1ft contours and a 1m DEM bare earth grid.<\/span><\/p>

All data are registered to UTM Zone 10, NAD83 horizontal datum and NAVD88 vertical datum. The elevations are in feet and the cell size is 1m by 1m.<\/span><\/p>

The accuracy specifications are as follows: Vertical accuracy: 95% at 0.6 ft and 90% at 0.5 ft. Horizontal accuracy: 1.0 ft, 1 sigma.<\/span><\/p><\/div><\/div><\/div>", "name": "elevation/SacDelta_LiDAR_DEM_2007", "description": "

In January of 2007, California Department of Water Resources tasked a team consisting of the URS Corporation and Fugro EarthData to obtain and process high resolution topographic data using lidar. The project area encompassed the Sacramento-San Joaquin Delta, Suisan Marsh, and the Los Vaqueros reservoir in California. Total project area in square miles was 1646 with a 100-ft buffer along the project boundary. The aerial lidar survey for this purpose was collected at a nominal 1-meter post spacing. Airborne 1 flew the lidar and processed the boresight calibration, Towill Inc. surveyed the ground control, and Fugro EarthData Inc. did all the lidar processing. The major acquistion window occurred in Jan/Feb of 2007 with reflights completing during Feb/March of 2008. The processed lidar was delivered in ascii, las, and ESRI geodatabase formats along with 1ft contours and a 1m DEM bare earth grid.<\/span><\/p>

All data are registered to UTM Zone 10, NAD83 horizontal datum and NAVD88 vertical datum. The elevations are in feet and the cell size is 1m by 1m.<\/span><\/p>

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