Welcome to RegRake!

This program is an implementation of A Regularized Raking Estimator for Small Area Mapping from Forest Inventory Surveys by Nagle, Schroeder, and Rose in Forests (2019), 10, 1045; doi:10.3390/f10111045


Warning! These are not official FIA estimates. The estimates herein are designed as an alternative to the FIA's official estimates for user-specified regions. The official FIA estimates are available at: Tools and Data - Forest Inventory and Analysis National Program (fs.fed.us)


The regularized raking algorithm is designed to provide more small area estimates than the traditional raking algorithm (Deming, W. E.; Stephan, F. F. (1940). On a Least Squares Adjustment of a Sampled Frequency Table When the Expected Marginal Totals are Known. The regularized raking estimator provides a compromise between purely design-based estimates and model-based estimates.


To get started, advance to the map tab and upload a zipped shapefile.

Click here for a user guide.

A sample shapefile shows the service area boundaries for a hypothetical biomass energy plant.



Funding for this research was provided by the U.S. Forest Service, Southern Research Station, Forest Inventory and Analysis (FIA) program (via agreement 17-CR-11330145-057).


Project Supervision:

Todd Schroeder, Ph.D.

Supervisory Research Forester

USDA Forest Service

Southern Research Station � FIA



Programming by:

Nicholas N Nagle, Professor and Head

Department of Geography

University of Tennessee, Knoxville



Joseph McCollum, M.S.

Computer Scientist

USDA Forest Service

Southern Research Station - FIA