Ground-truthing the Drought Code: field verification of overwinter recharge of forest floor moisture (including erratum)
Document Type: Report
Author(s): Bruce D. Lawson; George N. Dalrymple
Publication Year: 1996

Cataloging Information

  • biogeography
  • British Columbia
  • Canada
  • coniferous forests
  • DC - CFFDRS Drought Code
  • Douglas-fir
  • drought
  • duff
  • ecosystem dynamics
  • fire danger rating
  • fire management
  • Foehn winds
  • fuel accumulation
  • fuel moisture
  • FWI - Canadian Forest Fire Weather Index System
  • heavy fuels
  • mineral soil
  • moisture
  • moisture content
  • organic soils
  • overwinter
  • Pseudotsuga menziesii
  • roots
  • sampling
  • soil management
  • soil moisture
  • statistical analysis
  • Tsuga heterophylla
  • understory vegetation
  • western hemlock
  • International
Partner Site(s):
Record Maintained By:
Record Last Modified: June 1, 2018
FRAMES Record Number: 5952
Tall Timbers Record Number: 20650
TTRS Location Status: In-file
TTRS Call Number: Fire File
TTRS Abstract Status: Okay, Fair use, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


This report describes a standard procedure for destructively sampling the forest floor by depth class, oven-drying the material, and comparing the actual moisture contents against empirically derived regression equations of forest floor moisture versus DC for representative mature coastal and interior British Columbia forests, and for white spruce forests in southern Yukon. The field verification procedures and calibration equations presented here will be applicable to DC start-up, not only in early spring, at any time during the fire season that a fire weather station started up; hence, this report is relevant to prescribed burning and project wildfire operations, as well as to fire danger rating network stations. Erratum added June 2012.

Online Link(s):
Lawson, Bruce D.; Dalrymple, George N. 1996. Ground-truthing the Drought Code: field verification of overwinter recharge of forest floor moisture. FRDA Report 268. Canada/British Columbia Partnership Agreement On Forest Resource Developement: FRDA II. 21 p.