An Overview of NAIP Derived Point Clouds for Forest Monitoring


Webinar information

This presentation addresses sampling efficiency with auxiliary NAIP CSMs, forest yield modeling performance relative to lidar and frame-based imagery (pushbroom and frame-based imagery perform differently), and provides visual comparison with equivalent lidar for multiple states.The USDA National Agricultural Imagery Program (NAIP) collects nationwide imagery approximately every two years using airborne pushbroom sensors. Photogrammetric software is used to generate canopy surface models (CSMs) from NAIP imagery, which enables nationwide forest height mapping every two years! The NAIP derived canopy surface data in some ways resemble lidar data products, but they do not contain information from within and below the upper canopy. NAIP-derived canopy surface models are low-cost (less than $0.01 / acre), frequent, and nationwide (conterminous USA), which makes them conducive to broad-scale measurement and monitoring of forest conditions. The VMaRS team from the USFS PNW Research Station has been exploring the potential of NAIP DSMs for the last few years. This webinar is brought to you by SAF's Inventory and Biometrics (A1) Working Group. 

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Is this webinar for you?

This webinar is intended for foresters and natural resource professionals, and anyone seeking to learn more about the application of NAIP derived point clouds for forest monitoring.

Open registration

Registration is open. Select the button in the right hand corner that is labelled "Register."

Webinar access 

The webinar is scheduled for live viewing on September 15, 2020 at 2:00 pm ET. The Zoom Webinar platform will be used for the presentation. Be sure to connect to the webinar using a device approved to access Zoom.

This webinar will be archived for future viewing through September 15, 2021 at 11:55 pm ET unless notified otherwise. 

Webinar duration

This webinar is 1 hour.

Learning objectives

Upon successful completion of this short course, you will be able to:

1. Describe NAIP Pushbroom DAP technology.

2. Explain how DAP contributes to forest inventory.

3. Compare and relate the performances of DAP, lidar, and landsat for forest inventory.


Successful completion of the webinar is measured by viewing the entire webinar and completing the evaluation.


Participant feedback is appreciated to help the working group and presenters continually improve webinars for future programming.


Upon successful completion of this course, you will earn 1.0 CFEs in Category 1. CFEs will automatically be added to your CFE record located on


Upon successful completion of this webinar and the evaluation, participants may download and print a certificate verifying completion of the course and earning CFEs. CFEs will be uploaded to participant CFE records by the end of the day (11:59 pm ET).

Return to Webinar (live or archived)

Once you are registered for the webinar, access this webinar within your MY DASHBOARD. Prior to the start time, the webinar will be listed under "Upcoming Live Events." Following the end of the webinar, the webinar will be accessible within the general listing of registered items of YOUR DASHBOARD.

Webinar Resources

Additional resources are available within the Resources tab and within the Contents tab.

Need Help?

For ForestEd questions, visit FAQs, email, or watch the Course Tutorial within the Contents tab. For questions about this webinar, contact the A1 Working Group Chair, Jim Westfall, at For technical assistance email


This is a non-refundable item. Please view FAQs for additional information.

Jacob Strunk

USDA Forest Service

James Westfall (Moderator)

USDA Forest Service


NAIP Derived Clouds for Forest Monitoring Webinar
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7 Questions
7 Questions Please complete the evaluation to help inform the continuous improvement of future programming provided by SAF's Inventory and Biometrics (A1) Working Group.
CFEs & Certificate
1.00 CAT1 credit  |  Certificate available
1.00 CAT1 credit  |  Certificate available Download, save and print for your records. Your CFEs will be posted to your SAF CFE record tonight.