Normalized Digital Surface Model (nDSM) of part of Lake County, 2018 [Minnesota] Full Details

Full Details

Title:

Normalized Digital Surface Model (nDSM) of part of Lake County, 2018 [Minnesota]

Description:

This normalized digital surface model (nDSM) was part of a suite of datasets produced during a forest inventory enhancement research project, funded by the US Forest Service in 2016. The nDSM was produced at 1-m spatial resolution using high density lidar point cloud LAS files and USFS FUSION software. The source lidar was collected in October 2018 using linear lidar (near infrared laser) by Quantum Spatial Inc (QSI). There were on average 57.4 points per square meter. An nDSM is a height above ground model, where every pixel represents the elevation of the highest lidar return among all lidar returns within the grid cell. The production of the nDSM involved two basic steps: 1) filtering ground returns (i.e., points that sit on top of the bare-earth) to create a ground surface model, and 2) subtracting the ground elevations from all other above ground lidar return elevations. Any elevation values less than zero and above 50-m were not included. This information is valuable for analysts and managers so they can strategically plan with data-driven results. To acquire detailed surface elevation data for use in forest management and assessment, as well as a multitude of other uses (conservation planning and design, natural resources management research, hydrologic mapping and floodplain assessment, dam safety assessments, and fire fuel modeling, etc.). 2018

Creator:

MN Department of Natural Resources (DNR) Division of Forestry Forestry Resouce Assessment Program

Provider:

Minnesota Geospatial Commons

Resource Class:

Datasets and Web services

Theme:

Elevation

Place:

Minnesota

Rights:

none

Access Rights:

Public

Format:

Files

Language:

English

Date Added:

2023-08-20