USDA Forest Service - Forest Inventory & Analysis

The estimates presented are based on data retrieved from the FIA database (02/11/2022) and may not reflect the most recent data available from the FIA

program. Note – this publication does not include estimates of uncertainty. The most current data and sampling error for the estimates above can be found

by visiting https://www.fia.fs.fed.us/.

*Average annual estimates are based on data collected across 5-10 years and may not be indicative of the nominal year presented in the title by itself.

State and

Local

10.52%

Federal

4.21%

Private

85.28%

Iowa, 2020

2015 2020

2.83

2.92

Area of forest land

(million acres)

0.97

Number of live trees 1.03

on forest land

(billion trees)

4.71

Volume of live trees 4.58

on forest land

(billion cubic feet)

Annual Net Change

Annual Removals

Annual Mortality

Annual Gross Growth

All live (million cubic feet)

24,130 acres of nonforest

revert back to forest annually*

24,725 acres of forest land

convert annually* to nonforest

17,178 acres of forest land

are treated by cutting

(harvest, thinning, etc.) annually*

13,677 acres of forest land

are disturbed annually* by weather events

Forests of

This resource update is a brief look at some of the basic

metrics that describe the status of and changes to forest

resources in Iowa. This information is based on field data

collected using the USDA Forest Service Forest Inventory

and Analysis (FIA) annualized sample design, and it is

updated yearly.

Iowa has 5,977 sample plots across the State, of which

626.0 are currently forested. Each year, about 10-20 percent

of these plots are visited and measured by field crews. Data

used in this update were accessed from the FIA database on

02/11/2022.

8% forested*

Iowa has an estimated 2,832,267 acres of forest land. * Percent forest is forest area/total area. Percent forest with water removed from total area is 8%.

17

7

5

0

3

7

9

0

Forest land ownership

4,604 acres of forest land

are disturbed annually* by fire
Archived Versions

This report and archived past versions can be found on the USDA Forest Service publication database, Treesearch using keywords "Forest

Inventory" and "Iowa" here: https://www.fs.usda.gov/treesearch/.

How to cite this publication

USDA Forest Service. 2022. Forests of Iowa, 2020. Resource Update FS-327. Madison, WI: U.S. Department of Agriculture, Forest Service.

2p. https://doi.org/10.2737/FS-RU-327 .

Additional Resources

The application that produced this resource update was developed using data from the USDA Forest Service Forest Inventory and Analysis database

(FIADB): https://apps.fs.usda.gov/fia/datamart/datamart_excel.html .

Tables for Iowa, 2020 can be found here: https://doi.org/10.2737/FS-RU-327-Tables

The FIA one-click application can be found here: https://doi.org/10.2737/FIA-One-Click-State-Report-v1.2

Bechtold, W.A.; Patterson, P.L., eds. 2005. The enhanced Forest Inventory and Analysis program—national sampling design and estimation procedures.

Gen. Tech. Rep. SRS–80. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 85 p.

https://doi.org/10.2737/SRS-GTR-80 .

The U.S. Department of Agriculture (USDA) is an equal opportunity provider, employer, and lender.

National Woodland Owner Survey

The National Woodland Owner Survey (NWOS) collects and reports on multiple attributes of forest land ownership. Details of the NWOS program can be

found here: https://www.fia.fs.fed.us/nwos/.

The most recent NWOS Factsheet for Iowa can be found here: https://doi.org/10.2737/NRS-RN-274

NOTE: Some of the above links will not be active until the resource update has been approved for official publication.

Iowa, 2020

Forests of