Map Values - Reference Data

The Reference Data in Map Values is a combination of standard IFTDSS reference layers and National HVRA Data layers which represent those HVRAs layers used by Dillon (2020) during the National Wildfire Risk Assessment for Forest Service Lands. The Reference Data are assigned to Primary HVRA Category(s) based on what the layer represents. When a Primary HVRA Category is selected, IFTDSS determines available Sub-HVRAs within the specified geographic extent, including your shapes and shapefiles.

Tip: Your geographic extent may not always include every Sub-HVRA in the Primary HVRA Category.

Available reference layers in Map Values include:

IFTDSS Reference Data includes those reference layers that are national in scope and represent features that are considered values, thus not every IFTDSS reference layer is available. This data is indicated by the IFTDSS icon.
Highly Valued Resource or Asset (HVRA) National Data is part of the of the HVRA dataset used in the National Wildfire Risk Assessment for Forest Service Lands (NaWRA, Dillon 2020) and are national in scope including non-Forest Service lands. This data is indicated by the US map icon.

The Reference Data are listed below for Sub-HVRAs, grouped by Primary HVRA Category. Each is linked to a metadata page with more detail. We've also included Response Functions used for Quantitative Wildfire Risk Assessment.

Primary HVRA Category: Air Quality

Sub-HVRAs and their QWRA response functions for each flame length class.
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
Low PM2.5 Emission Potential	0	0	-10	-10	-10	-10
Moderate PM2.5 Emission Potential	-10	-10	-20	-20	-40	-40
High PM2.5 Emission Potential	-30	-40	-50	-60	-80	-100

Primary HVRA Category: Communities

Sub-HVRAs and their QWRA response functions for each flame length class.
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
Low density (>0-28 people per square mile)	-10	-20	-40	-60	-80	-90
Moderate density (>28-250 people per square mile)	-10	-20	-40	-60	-80	-90
High density (>250 people per square mile)	-10	-20	-40	-60	-80	-90

Primary HVRA Category: Ecosystem Function

Sub-HVRAs and their QWRA response functions for each flame length class. IFTDSS Reference Data does not have a pre-populated Response Function, and is indicated below by "NA."
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
Inventoried Roadless Area	NA	NA	NA	NA	NA	NA
Wilderness Study Area	NA	NA	NA	NA	NA	NA
Wilderness	NA	NA	NA	NA	NA	NA
Fully positive	100	100	100	100	100	100
All positive, undulating	100	80	80	50	60	70
All positive, decreasing slightly	100	100	100	90	80	70
Fully positive to neutral	100	100	80	50	20	0
Moderately positive to fully positive	50	80	100	100	100	100
Fully positive to moderately negative	100	100	50	10	-20	-50
Fully positive to strongly negative	100	100	50	-10	-50	-70
Neutral to slightly negative	0	0	0	0	-20	-50
Neutral to moderately negative (slow)	0	0	-10	-30	-40	-50
Neutral to moderately negative (steady)	0	-10	-10	-30	-40	-50
All negative, decreasing	-50	-60	-70	-80	-90	-100
Fully negative	-100	-100	-100	-100	-100	-100

Primary HVRA Category: Infrastructure

Sub-HVRAs and their QWRA response functions for each flame length class. IFTDSS Reference Data does not have a pre-populated Response Function, and is indicated below by "NA."
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
BLM Buildings	NA	NA	NA	NA	NA	NA
NPS Buildings	NA	NA	NA	NA	NA	NA
USFS Buildings	NA	NA	NA	NA	NA	NA
Mines	NA	NA	NA	NA	NA	NA
Communication Towers	NA	NA	NA	NA	NA	NA
Electric Sub Stations	NA	NA	NA	NA	NA	NA
Power Plants	NA	NA	NA	NA	NA	NA
Transmission Lines	NA	NA	NA	NA	NA	NA
Oil/Gas Pipelines	NA	NA	NA	NA	NA	NA
Campgrounds (BLM and USFS)	NA	NA	NA	NA	NA	NA
National Recreation Areas	NA	NA	NA	NA	NA	NA
National Historic Trails	NA	NA	NA	NA	NA	NA
National Recreation Trails	NA	NA	NA	NA	NA	NA
National Scenic Trails	NA	NA	NA	NA	NA	NA
National Scenic Byways	NA	NA	NA	NA	NA	NA
USFWS Trails	NA	NA	NA	NA	NA	NA
Powerlines	0	0	0	-30	-40	-50
Communication Sites	0	0	-10	-30	-40	-50
Low/Moderate Investment Buildings and Developed Recreation Sites	-10	-20	-40	-60	-80	-90
High Investment Buildings and Developed Recreation Sites	-10	-20	-40	-60	-80	-90

Primary HVRA Category: Surface Drinking Water

Sub-HVRAs and their QWRA response functions for each flame length class.
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
Lowest importance (IMP 1-10)	0	0	-20	-35	-50	-65
Extremely low importance (IMP 11-20)	0	0	-20	-35	-50	-65
Very low importance (IMP 21-30)	0	0	-20	-35	-50	-65
Low importance (IMP 31-40)	0	0	-20	-35	-50	-65
Moderately low importance (IMP 41-50)	0	0	-20	-35	-50	-65
Moderately high importance (IMP 51-60)	0	0	-20	-35	-50	-65
High importance (IMP 61-70)	0	0	-20	-35	-50	-65
Very high importance (IMP 71-80)	0	0	-20	-35	-50	-65
Extremely high importance (IMP 81-90)	0	0	-20	-35	-50	-65
Highest importance (IMP 91-100)	0	0	-20	-35	-50	-65

Primary HVRA Category: Priority Vegetation

Sub-HVRAs and their QWRA response functions for each flame length class. IFTDSS Reference Data does not have a pre-populated Response Function, and is indicated below by "NA."
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
Greater Sage-grouse Current Occupied Range (OCC)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse General Habitat Management Area (GHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Priority Habitat Management Area (PHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Priority Areas for Conservation (PAC)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Sagebrush Focal Area/Priority Habitat Management Area (SFA/PHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse additional, Land User Plan (LUP) Designations	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Important Habitat Management Area (IMHA)	NA	NA	NA	NA	NA	NA
Threatened Plant (Polygon)	NA	NA	NA	NA	NA	NA
Gunnison Sage-grouse Unoccupied Habitat (GUSH-UH)	NA	NA	NA	NA	NA	NA
Gunnison Sage-grouse Occupied Habitat (GUSH-OH)	NA	NA	NA	NA	NA	NA
Endangered Plant (Polygon)	NA	NA	NA	NA	NA	NA

Primary HVRA Category: Rangeland Values

Sub-HVRAs and their QWRA response functions for each flame length class. IFTDSS Reference Data does not have a pre-populated Response Function, and is indicated below by "NA."
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
BLM Grazing Allotments	NA	NA	NA	NA	NA	NA
BLM Horse and Burro Areas	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Current Occupied Range (OCC)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse General Habitat Management Area (GHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Priority Habitat Management Area (PHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Priority Areas for Conservation (PAC)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Sagebrush Focal Area/Priority Habitat Management Area (SFA/PHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse additional, Land User Plan (LUP) Designations	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Important Habitat Management Area (IMHA)	NA	NA	NA	NA	NA	NA
Gunnison Sage-grouse Unoccupied Habitat (GUSH-UH)	NA	NA	NA	NA	NA	NA
Gunnison Sage-grouse Occupied Habitat (GUSH-OH)	NA	NA	NA	NA	NA	NA

Primary HVRA Category: Recreation

Sub-HVRAs and their QWRA response functions for each flame length class. IFTDSS Reference Data does not have a pre-populated Response Function, and is indicated below by "NA."
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
Campgrounds (BLM and USFS)	NA	NA	NA	NA	NA	NA
National Recreation Areas	NA	NA	NA	NA	NA	NA
National Historic Trails	NA	NA	NA	NA	NA	NA
National Recreation Trails	NA	NA	NA	NA	NA	NA
National Scenic Trails	NA	NA	NA	NA	NA	NA
National Scenic Byways	NA	NA	NA	NA	NA	NA
USFWS Trails	NA	NA	NA	NA	NA	NA

Primary HVRA Category: Wildlife

Sub-HVRAs and their QWRA response functions for each flame length class. IFTDSS Reference Data does not have a pre-populated Response Function, and is indicated below by "NA."
Sub-HVRA	0-2 ft	2-4 ft	4-6 ft	6-8 ft	8-12 ft	>12 ft
Endangered Invertebrate (Line)	NA	NA	NA	NA	NA	NA
Endangered Invertebrate (Polygon)	NA	NA	NA	NA	NA	NA
Endangered Vertebrate (Line)	NA	NA	NA	NA	NA	NA
Endangered Vertebrate (Polygon)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Current Occupied Range (OCC)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse General Habitat Management Area (GHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Priority Habitat Management Area (PHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Priority Areas for Conservation (PAC)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Sagebrush Focal Area/Priority Habitat Management Area (SFA/PHMA)	NA	NA	NA	NA	NA	NA
Greater Sage-grouse additional, Land User Plan (LUP) Designations	NA	NA	NA	NA	NA	NA
Greater Sage-grouse Important Habitat Management Area (IMHA)	NA	NA	NA	NA	NA	NA
Gunnison Sage-grouse Unoccupied Habitat (GUSH-UH)	NA	NA	NA	NA	NA	NA
Gunnison Sage-grouse Occupied Habitat (GUSH-OH)	NA	NA	NA	NA	NA	NA
Proposed Threatened Invertebrate (Line)	NA	NA	NA	NA	NA	NA
Proposed Endangered Invertebrate (Polygon)	NA	NA	NA	NA	NA	NA
Threatened Invertebrate (Line)	NA	NA	NA	NA	NA	NA
Threatened Invertebrate (Polygon)	NA	NA	NA	NA	NA	NA
Threatened Vertebrate (Line)	NA	NA	NA	NA	NA	NA
Threatened Vertebrate (Polygon)	NA	NA	NA	NA	NA	NA