Dataset Name

Normalized digital surface model (nDSM), Tanacross Quadrangle

Bibliographic Reference

Hubbard, T.D., Braun, M.L., Westbrook, R.E., and Gallagher, P.E., 2011, High-resolution lidar data for infrastructure corridors, Tanacross Quadrangle, Alaska, in Hubbard, T.D., Koehler, R.D., and Combellick, R.A., High-resolution lidar data for Alaska infrastructure corridors: Alaska Division of Geological & Geophysical Surveys Raw Data File 2011-3B.

Table of Contents

Layer Name: metadata
Layer Description: metadata files, read me files and reports

Layer Name: ndsm
Layer Description: The nDSM models represent the above ground elevation of the highest laser return with all vegetation included.

Supplemental Information

This metadata file was written to document and describe, as a whole, all the nDSM model files generated for this project. The original metadata files provided by Watershed Sciences, Inc are also included in the download package and may provide additional useful information that is specific to each file. The metadata files provided by Watershed Sciences, Inc. have not been reviewed for accuracy or compliance with FGDC standards. For each data delivery area, reports documenting data collection methodology, accuracy, and quality control were provided by Watershed Sciences and the Oregon Department of Geology and Mineral Industries (DOGAMI). These reports have been combined into single comprehensive reports organized by delivery region. The lidar QC report (the comprehensive report from DOGAMI) and the lidar delivery report (the comprehensive report from Watershed Sciences) can be found at  >. Information about the quadrangles included in individual delivery regions can be found in the lidar delivery index report included with the data download. The DGGS metadata standard extends the FGDC standard to include several elements that are required to facilitate internal data management. These elements are referred to as layers. This dataset is described as a single layer titled:
 >ndsm The normalized digital surface models (nDSM) represent the above ground elevation of the highest laser return with all vegetation included.


Metadata is the data about the data and answers "Who, what, when, where, how and why?" about the dataset. Please see the DGGS Metadata README page for information about our metadata.

Use Constraints

Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

Distribution Contact Information

Metadata Manager
Alaska Division of Geological & Geophysical Surveys
3354 College Road
Fairbanks, AK 99709-3707
Phone Number: (907)451-5020
Fax Number: (907)451-5050