U.S. Geological Survey Scientific Investigations Report 2014-5161

Feature class digital data from the report. Potential Postwildfire 
Debris-Flow Hazards—A Prewildfire Evaluation for the Sandia and Manzano 
Mountains and Surrounding Areas, Central New Mexico 

Anne C. Tillery, Jessica R. Haas, Lara W. Miller, Joe H. Scott, and 
Matthew P. Thompson.

The purpose of this report is to provide information on which watersheds might 
constitute the most serious, potential, debris-flow hazards in the event of a 
large-scale wildfire and subsequent rainfall in the Sandia and Manzano Mountains.  
This report contains digital data, and text files describing data formats 
and modeling procedures for the study. Potential probabilities and estimated 
volumes of postwildfire debris flows in the unburned Sandia and Manzano Mountains 
and surrounding areas were estimated using empirical debris-flow models developed 
by the U.S. Geological Survey in combination with fire behavior and burn probability 
models developed by the U.S. Department of Agriculture Forest Service. Basin burn 
probabilities were combined with estimated debris-flow volumes and probabilities to 
generate an integrated debris-flow hazard for each basin.
                       
Disclaimer

This publication is prepared by an agency of the United States Government. 
Reference to any specific commercial product, process, or service by trade name, 
trademark, manufacturer, or otherwise does not necessarily constitute or imply 
its endorsement, recommendation, or favoring by the United States Government 
or any agency thereof.  

Tabular Information within Feature Class

Area_km2: Area of subbasin in kilometers squared

area:Geographic area in which the subbasin is located.  Geographic areas are identified
in figure 6 of accompanying report.

prob5yr: Probability of debris-flow occurrence for recurrence interval storm of 5 years.

P_prob5yr:Percent probability of debris-flow occurrence for recurrence interval storm of 
5 years.

Bpavg:Average annual burn probability for the basin as modeled by the large fire 
simulator system (FSim).

dfprob10yr:Probability of debris-flow occurrence for recurrence interval storm of 
10 years.

P_dfprob10:Percent probability of debris-flow occurrence for recurrence interval storm 
of 10 years.

vol5yr_m3:Estimated volume of debris-flow in cubic meters for a recurrence interval 
storm of 5 years.

System Requirements

MAC OS X

Adobe Reader 7.0 Macintosh
  PowerPC G3, G4, G5 processor
  Mac OS X v.10.2.8 or higher
  128 MB of RAM
  80 MB of available hard disk space (110 MB required for the full version)
  800 x 600 screen resolution

Adobe Reader 6.0.x Macintosh
  G3 or faster processor
  Mac OS X v10.2.2 or higher
  32 MB of RAM (64 MB recommended)
  70 MB of available hard disk space
  800 x 600 screen resolution

WINDOWS

Adobe Reader 7.0 MS Windows
  Pentium-class processor
  Windows XP Professional or Home Edition with SP1 or SP2, or Tablet PC 
  Edition; Microsoft Windows 2000 with Service Pack 2 (SP2)
  128 MB of RAM
  90 MB of available hard-disk space for the full version
  800 x 600 monitor resolution

Adobe Reader 6.0 MS Windows
  Pentium-class processor
  Windows XP Professional, Home, or Tablet PC Edition; Windows Me; 
  Windows 2000   Professional SP2; Windows NT   Workstation 4.0 SP6; 
  Windows 98 Second Edition
  32 MB of RAM (64 MB recommended)
  80 MB of available hard disk space
  800 x 600 monitor resolution


All datasets are projected as North American Datum 1983 Universal Transvers Mercator Zone 13N, 
Distance Unit = Meter, Angular Unit = Decimal Degree.

Contact:
Anne Tillery
Hydrologist
New Mexico Water Science Center
U.S. Geological Survey
5338 Montgomery Blvd. Ste 400
Albuquerque, NM 87109
atillery@usgs.gov