Dataset Overview

North American Maple Project (NAMP) data for Massachusetts, Maine, Michigan, Minnesota, New Hampshire, New York, Ohio, Pennsylvania, Vermont, and Wisconsin from 1988 to 1999.

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Annual measurement of sugar maple forest stands to determine tree condition, trends and possible causes of sugar maple decline, and assess the variation in within-season timing of measurements, using same plot design as in the National Forest Health Monitoring Program (NFHM).

Data Collection Status

Data collection for this dataset has been completed

Start date


End date


Data Availability

Data are available upon request

Data License

By request

Preferred Citation

Not provided

Update Frequency


Maintenance Plan

Not provided


  • Forest Health Monitoring: North American Maple Project
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