- Topic Submission
- Discussion & Evaluation
- Development
- Project
Data
Design
Geotechnical
Planning
Environment
Is this related to or a continuation of a previous Iowa DOT research project?
No
Does this idea include matching funds?
No
Anticipated Benefits
Potentially significant time and cost savings by utilizing LiDAR for data collection and pre-processing prior to design.
Focus Area
Technology
Research Program
SPR / 774: Research & Technology Transfer
Project Title
Exploration and Evaluation of High-Resolution Imagery for Environmental Assessment
Project Number
17-SPR2-002
Contracted Agency
Iowa State University
Funding Program
State Planning and Research
Project Funding
$237,815
Project Funding Including External Sources
$237,815
Project Start Date
08/15/2017
Current Project End Date
07/31/2022
Project Abstract
The goal of this project is to assess potential and develop protocols for the use of high-resolution UDAR and multispectral imagery to evaluate environmental characteristics of DOT project areas. Specifically, we will evaluate how LiDAR and multispectral imagery can support the assessment of design alternatives, and if these data could help DOT staff select alternatives earlier and with less fieldwork required.
In addition to capturing normal land survey and engineering data concurrently, which is invaluable to the design and project development process, we will augment this data with high-resolution remotely obtained data. This will allow us to assess the extent to which the following can be completed using such imagery: (a) wetland spatial extent and vegetation characterization; (b) stream channel morphology determination (depth, width, centerline location); and (c) tree assessment (tree stand density and health, individual tree heights, diameter and health).
In addition to land survey data for engineering purposes, the D_OT also believes this remote sensed data (in the form of high resolution multispectral orthoimagery and LIDAR) will provide ancillary benefit that will allow potential threatened and endangered species habitat to be identified early as well as an Archaeological Landform and Architectural Building/Setting Assessment to be investigated further through correlation of field collected data. While these additional assessments are not part of this proposal, the images and data gathered in this project will be available for future investigation.
Current DOT methods for environmental assessment require a significant amount of manual and on-site work, driving up the costs and time associated with these phases of projects. This project will determine what savings might be realized through use of high-resolution imagery and what the break-even point for this type of data collection might be in terms of the size of the study area. Specifically, we intend to evaluate the use of three types of imagery at approximately a 15-50 cm spatial resolution: standard (near infrared) LiDAR elevation and terrain data, multispectral color (blue, green, red, and near infrared) reflectance data, and narrow-band green LiDAR imagery which penetrates into water surfaces and gives information relevant to topography under shallow water.
In addition to capturing normal land survey and engineering data concurrently, which is invaluable to the design and project development process, we will augment this data with high-resolution remotely obtained data. This will allow us to assess the extent to which the following can be completed using such imagery: (a) wetland spatial extent and vegetation characterization; (b) stream channel morphology determination (depth, width, centerline location); and (c) tree assessment (tree stand density and health, individual tree heights, diameter and health).
In addition to land survey data for engineering purposes, the D_OT also believes this remote sensed data (in the form of high resolution multispectral orthoimagery and LIDAR) will provide ancillary benefit that will allow potential threatened and endangered species habitat to be identified early as well as an Archaeological Landform and Architectural Building/Setting Assessment to be investigated further through correlation of field collected data. While these additional assessments are not part of this proposal, the images and data gathered in this project will be available for future investigation.
Current DOT methods for environmental assessment require a significant amount of manual and on-site work, driving up the costs and time associated with these phases of projects. This project will determine what savings might be realized through use of high-resolution imagery and what the break-even point for this type of data collection might be in terms of the size of the study area. Specifically, we intend to evaluate the use of three types of imagery at approximately a 15-50 cm spatial resolution: standard (near infrared) LiDAR elevation and terrain data, multispectral color (blue, green, red, and near infrared) reflectance data, and narrow-band green LiDAR imagery which penetrates into water surfaces and gives information relevant to topography under shallow water.
Project Champion
Technical Advisory Committee
Project Manager
Delivering targeted solutions for Iowa's transportation future.
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