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Mapping: GPS Use for GIS Application

Set up before going to the field

  • Make sure fresh batteries are loaded and extra sets available.
  • Transfer background maps for the area using MapSource (if available).
  • Turn unit on to initialize and acquire satellites ahead of time if you are in a new area or haven’t used the unit in at least a week. This may take as long as 20 minutes in the open, away from buildings, canopy, and obstructions.
  • Download and clear old waypoints and tracks from memory.
  • Turn off Active Track log. Set it to the preferred Collection method (Time is best) and an appropriate logging rate for the data collection. Five seconds works for most walking collection. Keep in mind the total storage of the GPS.
  • Ensure Simulator Mode is not ON when collecting data.
  • Set unit time zone and date (Ensure Daylight Savings Time if needed).
  • Check Interface Protocol is set properly.
  • Set the Coordinate System (UTM or LAT/LONG) & Datum to ensure compatibility with written coordinates you may need to navigate to or Map.
  • Set Heading to magnetic or true. If true, ensure same declination is used.

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Field – GPS Data Collection

  • Hold GPS antenna away from body with antenna up. Better yet, hold at, or above the head. Purchase an external antenna to free hands if needed or for better reception in vehicles.
  • Mark the waypoints for point locations at beginning and ending of track log collections. Writing down a position is just backup.
  • Most GPS units will collect data no matter what the GPS quality is. It’s up to you to monitor the GPS Satellite Page for anomalies and accuracy.
  • Collect when 3D GPS is shown. Do not collect data in 2D unless necessary.

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Waypoints

  • Collect all waypoints in Averaged Position mode if you are standing still, when possible, and if your receiver has that capability. Minimum of 10 positions, maximum of 20 minutes. Somewhere in between is enough to generate a quality position in most cases.
  • Collect an instantaneous waypoint only when moving or in a hurry, or if using the eTrex line.
  • Edit default waypoint numbers to letters or words that are more descriptive, or make good field notes to ensure you remember what features are represented by which numbers.

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Track logs

  • Use Stop when Full or Fill Record Mode rather than wrap to prevent overwriting track log points when Active Track log becomes full.
  • Turn on Active Track log at start location and immediately begin moving.
  • Stop Active Track log when movement is stopped or mission is finished.
  • Always Stop Active Track just shy of starting point when collecting an area (polygon). Overlapping makes conversion to GIS more challenging.
  • Use caution when saving an Active Track log. Garmin will generalize active track to save space, thereby degrading data.

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NWCG Latest Announcements

Updated NWCG Guide for Wildland Fire Modules, PMS 431

Date: May 14, 2025
Questions?  Please contact:
Fire Use Subcommittee

The updated NWCG Guide for Wildland Fire Modules, PMS 431 serves as a supplemental resource for wildland fire module operations, providing information frequently used in the field.

PMS 431 defines the organizational structure, staffing, and qualifications for Type 1 and Type 2 Wildland Fire Modules, outlining their roles in wildland fire suppression, prescribed fire, and resource management. The NWCG Guide for Wildland Fire Modules, PMS 431, should be used in conjunction with the NWCG Standards for Wildland Fire Module Operations, PMS 430.

References:

NWCG Guide for Wildland Fire Modules, PMS 431

NWCG Standards for Wildland Fire Module Operations, PMS 430

Updated NWCG Standards for Wildland Fire Resource Typing, PMS 200 Now Includes Off-Highway Vehicle Typing Standards

Date: May 13, 2025
Questions?  Please contact:
Mobile Fire Equipment Subcommittee 

The NWCG Standards for Wildland Fire Resource Typing, PMS 200 has been updated to include newly developed Off-Highway Vehicle (OHV) typing standards. These standards organize OHV information into logical categories and outline key safety requirements for occupants.

NWCG Standards for Wildland Fire Resource Typing, PMS 200 establishes minimum typing standards for aircraft, crews, and equipment used in national mobilization to wildland fire incidents. Typing designations are assigned based on measurable capability and performance criteria.

References:

NWCG Standards for Wildland Fire Resource Typing, PMS 200

NEW! S-204, Interpersonal and Critical Thinking Skills for Safety Officers Now Available

Date: May 12, 2025
Questions?  Please contact:
Risk Management Committee

The S-204, Interpersonal and Critical Thinking Skills for Safety Officers self-directed online course is now available! Developed through the Incident Performance and Training Modernization (IPTM) effort, this training supports individuals working towards Safety Officer, Field (SOFF) incident qualifications.

S-204, Interpersonal and Critical Thinking Skills for Safety Officers focuses on facilitating hazard mitigation conversations and building trust to influence safety-related decisions. Individuals can self-enroll through the Wildland Fire Learning Portal (WFLP).

Any changes to qualification pathways will take effect with the next update of the NWCG Standards for Wildland Fire Position Qualifications, PMS 310-1.

References:

S-204, Interpersonal and Critical Thinking Skills for Safety Officers 

NWCG Safety Officer, Field (SOFF) Position Page

Wildland Fire Learning Portal

Great Basin Cache Upgrading to New Inventory System

Date: May 7, 2025
Questions?  Please contact:
Great Basin Cache
Phone: (208) 387-5104
Fax: (208) 387-5573

The Great Basin Cache (GBK) is transitioning to a new inventory system to better serve the wildland fire community. During this upgrade, GBK will be unable to process standard orders from Part 1: Fire Supplies and Equipment and Part 2: Publications between May 8-20, 2025, with exceptions made for emergency fire orders. Orders will be accepted through close of business May 7.

To browse the latest available items, please refer to the National Fire Equipment System (NFES) catalogs. 

References:

NWCG NFES Catalog-Part 1: Fire Supplies and Equipment, PMS 449-1

NWCG NFES Catalog-Part 2: Publications, PMS 449-2