Lidar Collection and Mapping
DOGAMI Lidar Data Distribution Policy
What is lidar?
What is lidar?
Airborne lidar uses a laser range finder mounted in a precisely navigated aircraft to scan the earth's surface at very high rates and collect very dense clouds of X-Y-Z coordinates. Lidar data that define the ground, vegetation and man-made structures are useful for anyone wanting to know the shape of the land surface or of the vegetation and buildings on the land. (Learn more in the "Seeing Landslides with Lidar" Cascadia issue [6 MB PDF] or or view a presentation [Powerpoint file (12 MB) or Flash Player movie] that explains lidar and the OLC in detail.)
The Oregon Department of Geology and Mineral Industries (DOGAMI) has been involved in pilot efforts to collect high-resolution lidar in Oregon since 2003. In 2006-2007 we were successful in forming the Portland Lidar Consortium, which brought together 17 agencies ranging from the USGS to the City of Silverton to acquire 2200 square miles of seamless, high-quality public domain lidar data (current PLC status - May 27, 2009 [461 KB PDF]). Among the many benefits of the consortium approach are that large swaths of lidar data can be collected seamlessly, costs per unit area to collect the data are greatly reduced, expert quality assurance and quality control are uniformly applied to the data, statewide standardization of data can be assured, and small jurisdictions can benefit from the acquisition of lidar data at a greatly reduced cost when compared to the cost if jurisdictions acted independently.
In 2007 the Oregon 74th Legislative Assembly directed DOGAMI to extend lidar collection efforts throughout the state. Legislators approved the consortium model for data collection and data sharing, and provided modest seed money. The ultimate goal is to provide high-quality lidar coverage for the entire state. To achieve this goal DOGAMI has formed the Oregon Lidar Consortium (OLC), which will develop cooperative agreements for the collection of high-quality lidar that benefits the public at large, the business community, and agencies at all levels of government.
In winter 2007 and spring 2008 DOGAMI developed data specifications and selected a vendor (Watershed Sciences Inc., Corvallis, Oregon) through a national competitive bidding process. During this time we also developed several funding partnerships for data collection blocks. Initially, we identified our area of primary interest as the inhabited portions of western Oregon (see map), but we welcome partners with funding for interests outside of that area. We have developed several partnerships that includes areas outside the original target, where partners are willing to pay the full cost of data acquisition. As of October of 2009, the OLC has 11 data acquisition blocks under contract (PDF map of current active areas) and is finalizing the details of funding partnerships for other areas. The cost for data acquisition depends on the size of the area and includes contract management and quality control by DOGAMI.
The basic OLC strategy (outlined in detail in the OLC Business Plan) for developing data acquisition areas is to start with a local funding partner and work to enlarge that area by finding additional partners and adding OLC funds to link areas together into large contiguous blocks.
FAQs about lidar data back to top
What is the current status of mapping? back to top
How do I get my area included in an upcoming survey? back to top
The first step for interested parties is to contact DOGAMI and provide a map of your area of interest along with an estimate of your available funding.
What can I do with lidar? back to top
What kind of data will I get? back to top
DOGAMI OLC clients receive their data deliverables as per the arrangements of their intergovernmental agreements. All data acquired by OLC will be eventually available in the public domain and made available through our Nature of the Northwest Information Center. Other parties, including the public, will be able to purchase combinations of data types on appropriate media. The data will be organized on a spatial grid, similar to that used for topographic maps. Unit prices are being determined. At this time DOGAMI anticipates that this data available for purchase will include the bare earth and all-returns digital elevation models, intensity images (GeoTiff format), and perhaps the original “point cloud” data. In addition, certain federal agency websites will host the point cloud data where it may be downloaded by interested parties. Read the DOGAMI Lidar Data Distribution Policy (PDF) for details.
Data hosted on other sites:
Whom do I contact? back to top
Additional resources back to top
Oregon Department of Geology and Mineral Industries
800 NE Oregon Street #28, Suite 965, Portland, OR 97232-2162
(971) 673-1555, FAX (971) 673-1562
email us at DOGAMI
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