Roadless Areas
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Open Water

EVT 7292
WaterOpen water
Roadless Areas (104)

Inventoried Roadless Areas where this ecosystem is present, identified from LANDFIRE 2024 Existing Vegetation Type spatial analysis. Coverage indicates the proportion of each area occupied by this ecosystem type.

Arizona (4)

AreaForestCoverageHectares
HackberryPrescott National Forest2.7%9.9
PicachoTonto National Forest2.4%48.69
Black River CanyonApache-Sitgreaves National Forests2.2%106.02
Lower San FranciscoApache-Sitgreaves National Forests0.4%87.21

California (18)

AreaForestCoverageHectares
Bucks LakePlumas National Forest15.3%42.3
Trail LakeLassen National Forest11.2%50.67
Castle Crags BShasta-Trinity National Forest3.0%19.71
Tuolumne RiverStanislaus National Forest2.6%179.19
RubiconEldorado National Forest2.5%49.77
Grouse LakesTahoe National Forest2.0%158.22
Kettle Mtn.Shasta-Trinity National Forest1.9%36.18
North Fork Middle Fork American RiverTahoe National Forest1.7%76.59
Ferguson RidgeSierra National Forest1.2%30.6
Carson - IcebergStanislaus National Forest1.1%252.27
Mt. EddyShasta-Trinity National Forest1.0%28.44
UnderwoodSix Rivers National Forest1.0%25.83
North Fork American RiverTahoe National Forest0.9%138.6
Mokelumne - Mt. BullionHumboldt-Toiyabe National Forest0.8%45.45
PantherShasta-Trinity National Forest0.8%39.33
Cow CreekShasta-Trinity National Forest0.7%60.03
Kings RiverSierra National Forest0.5%114.57
North Fork SmithSix Rivers National Forest0.5%79.56

Florida (1)

AreaForestCoverageHectares
Farles PrairieOcala National Forest2.4%18.27

Indiana (1)

AreaForestCoverageHectares
Mogan RidgeHoosier National Forest1.2%40.68

Michigan (1)

AreaForestCoverageHectares
Government IslandHiawatha National Forest5.5%5.04

Minnesota (4)

AreaForestCoverageHectares
Wood LakeSuperior National Forest3.3%7.92
Kawishiwi Lake To SawbillSuperior National Forest1.8%110.61
Brule Lake - Eagle MountainSuperior National Forest1.5%76.05
Tait LakeSuperior National Forest1.3%32.76

Montana (21)

AreaForestCoverageHectares
HolterHelena National Forest7.4%58.86
BeartoothGallatin National Forest4.5%96.66
Lolo CreekBitterroot National Forest4.1%9.72
BeartoothCuster National Forest2.4%11.16
Mt. Gmt Area HCuster National Forest2.3%12.24
Lebeau RA 1507Flathead National Forest1.4%30.87
Call MountainBeaverhead-Deerlodge National Forest1.3%45.36
Storm LakeBeaverhead-Deerlodge National Forest1.2%44.91
Flint Range / Dolus LakesBeaverhead-Deerlodge National Forest1.2%284.67
Whitetail / HaystackBeaverhead-Deerlodge National Forest1.2%359.46
Big LogHelena National Forest1.0%34.47
Freezeout MountainBeaverhead-Deerlodge National Forest0.7%270.72
LionheadGallatin National Forest0.7%88.74
East PioneerBeaverhead-Deerlodge National Forest0.6%329.67
West Big HoleBeaverhead-Deerlodge National Forest0.5%286.02
Selway - Bitterroot (01067)Bitterroot National Forest0.5%227.79
Middle Mtn. / Tobacco RootsBeaverhead-Deerlodge National Forest0.5%186.12
Crazy MountainGallatin National Forest0.3%116.1
HoodooLolo National Forest0.3%146.88
Bmss Ra 1485Flathead National Forest0.3%465.66
West PioneerBeaverhead-Deerlodge National Forest0.2%209.97

New Mexico (3)

AreaForestCoverageHectares
Chama WS RiverSanta Fe National Forest7.4%125.64
Candian RiverCibola National Forest2.1%61.29
Lower San FranciscoGila National Forest1.0%103.14

North Carolina (1)

AreaForestCoverageHectares
South Mills RiverPisgah National Forest1.0%36.18

North Dakota (2)

AreaForestCoverageHectares
Bullion ButteDakota Prairie Grasslands0.8%65.79
Strom - HansonDakota Prairie Grasslands0.8%58.32

Oregon (16)

AreaForestCoverageHectares
MarshWinema National Forest12.8%63.54
LakeMt. Hood National Forest12.6%67.41
Grande RondeWallowa-Whitman National Forest3.9%88.56
Umpqua SpitSiuslaw National Forest3.6%30.78
TahkenitchSiuslaw National Forest2.5%59.13
Potato MountainSiskiyou National Forests2.5%60.66
W - T ThreeUmatilla National Forest2.3%15.84
OlallieMt. Hood National Forest1.9%58.41
TenmileSiuslaw National Forest1.9%82.35
Grande RondeUmatilla National Forest1.8%89.73
WaldoDeschutes National Forest1.4%28.98
Opal CreekWillamette National Forest1.4%31.41
Maiden PeakDeschutes National Forest1.2%131.85
Myrtle SilviesMalheur National Forest1.0%47.79
West - South BachelorDeschutes National Forest0.9%96.48
Waldo - FujiWillamette National Forest0.8%48.69

South Carolina (1)

AreaForestCoverageHectares
Big MountainSumter National Forest2.9%27.81

South Dakota (1)

AreaForestCoverageHectares
South ForkDakota Prairie Grasslands1.2%37.08

Utah (5)

AreaForestCoverageHectares
0401032Ashley National Forest1.7%44.1
LakesWasatch-Cache National Forest0.7%350.01
0419020Ashley National Forest0.6%898.65
High Uintas (UT)Wasatch-Cache National Forest0.5%194.31
Boulder Mtn. / Boulder Top / Deer LakeDixie National Forest0.3%148.23

Virginia (1)

AreaForestCoverageHectares
Laurel ForkGeorge Washington National Forest1.0%41.04

Washington (5)

AreaForestCoverageHectares
Packwood LakeGifford Pinchot National Forest40.1%175.86
Glacier Peak HMt Baker-Snoqualmie National Forest1.1%45
Blue LakeGifford Pinchot National Forest1.1%49.68
Glacier Peak KMt Baker-Snoqualmie National Forest0.6%109.8
ChelanWenatchee National Forest0.3%98.64

West Virginia (3)

AreaForestCoverageHectares
Turkey MountainMonongahela National Forest1.9%49.32
Little MountainMonongahela National Forest1.1%35.1
Cranberry AdditionMonongahela National Forest0.8%34.56

Wisconsin (1)

AreaForestCoverageHectares
09012 - Round Lake Study AreaChequamegon-Nicolet National Forest3.3%50.13

Wyoming (15)

AreaForestCoverageHectares
Winegar HoleTarghee National Forest15.6%15.66
West Slope WindsBridger-Teton National Forest6.2%3,620.61
Beartooth Proposed WildernessShoshone National Forest5.4%365.13
0401036Ashley National Forest4.5%114.66
Snowy RangeMedicine Bow-Routt National Forest2.6%316.08
Piney CreekBighorn National Forest1.9%168.93
Togwotee PassShoshone National Forest1.5%43.65
South Beartooth HighwayShoshone National Forest1.1%489.96
Mosquito Lake - Seven LakesBridger-Teton National Forest0.9%185.13
Pacific Creek - Blackrock CreekBridger-Teton National Forest0.6%59.58
Dunoir Special Management UnitShoshone National Forest0.5%59.94
South Wyoming RangeBridger-Teton National Forest0.4%139.86
Cloud Peak ContiguousBighorn National Forest0.3%156.78
Grayback RidgeBridger-Teton National Forest0.2%219.15
Salt River RangeBridger-Teton National Forest0.2%158.49
Methodology and Data Sources

Ecosystem classification: Ecosystems are classified using the LANDFIRE 2024 Existing Vegetation Type (EVT) layer, mapped to NatureServe Terrestrial Ecological Systems via a curated crosswalk. Each EVT is linked to the USNVC (U.S. National Vegetation Classification) hierarchy through pixel-level co-occurrence analysis of LANDFIRE EVT and NatureServe IVC Group rasters across all roadless areas.

Vegetation coverage: Coverage percentages and hectares are derived from zonal statistics of the LANDFIRE 2024 EVT raster intersected with roadless area boundaries.

Ecosystem narratives and community species: Sourced from the NatureServe Explorer API, representing professional ecological assessments of vegetation composition, environmental setting, dynamics, threats, and characteristic species assemblages.

IVC hierarchy: The International Vegetation Classification hierarchy is sourced from the USNVC v3.0 Catalog, providing the full classification from Biome through Association levels.

Component associations: Plant community associations listed as components of each NatureServe Ecological System. Association data from the NatureServe Explorer API.

State ranks: Conservation status ranks assigned by NatureServe member programs in each state where the ecosystem occurs.