Polk Springs

Lassen National Forest · California · 9,466 acres · RoadlessArea Rule (2001)
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Observed Species (32)

Species with confirmed research-grade observation records from iNaturalist community science data.

(2)
Calochortus syntrophus
Aleutian Maidenhair Fern (1)
Adiantum aleuticum
American Dipper (1)
Cinclus mexicanus
Bidwell Knotweed (2)
Polygonum bidwelliae
California Dutchman's-pipe (2)
Aristolochia californica
California Foothill Pine (1)
Pinus sabiniana
California Yerba Santa (1)
Eriodictyon californicum
Canyon Liveforever (1)
Dudleya cymosa
Gophersnake (1)
Pituophis catenifer
Hall's Rupertia (1)
Rupertia hallii
Incense Cedar (2)
Calocedrus decurrens
Kellogg's Monkeyflower (1)
Diplacus kelloggii
Many-flower Snakelily (1)
Dichelostemma multiflorum
Mule Deer (1)
Odocoileus hemionus
Munite Prickly-poppy (1)
Argemone munita
North American Racer (1)
Coluber constrictor
Pacific Dogwood (1)
Cornus nuttallii
Ponderosa Pine (1)
Pinus ponderosa
Purpus' Scorpionweed (1)
Phacelia purpusii
Salal (1)
Gaultheria shallon
Sanborn's Onion (1)
Allium sanbornii
Sharp-shinned Hawk (1)
Accipiter striatus
Showy Tarweed (1)
Madia elegans
Sierra Newt (2)
Taricha sierrae
Slender Clarkia (2)
Clarkia gracilis
Sugar Pine (1)
Pinus lambertiana
Tansy Scorpionweed (1)
Phacelia tanacetifolia
Woolly Desert-dandelion (1)
Malacothrix floccifera
Yellow Pincushion (1)
Chaenactis glabriuscula
Yellow-and-white Monkeyflower (1)
Erythranthe bicolor
Yellow-star Mariposa Lily (1)
Calochortus monophyllus
Federally Listed Species (9)

Species identified by the U.S. Fish and Wildlife Service as potentially occurring within this area based on range and habitat data. These designations do not indicate confirmed presence — they identify habitat where agency actions may require consultation under the Endangered Species Act.

California Red-legged Frog
Rana draytoniiThreatened
Conservancy Fairy Shrimp
Branchinecta conservatioEndangered
Sierra Nevada Yellow-legged Frog
Rana sierraeEndangered
California Condor
Gymnogyps californianusE, XN
California Spotted Owl
Strix occidentalis occidentalis
Gray Wolf
Canis lupus
Monarch
Danaus plexippusProposed Threatened
North American Wolverine
Gulo gulo luscus
Northwestern Pond Turtle
Actinemys marmorataProposed Threatened
Other Species of Concern (10)

Species identified by the U.S. Fish and Wildlife Service as potentially occurring based on range and habitat data.

American Dipper
Cinclus mexicanus
Black-throated Gray Warbler
Setophaga nigrescens
California Thrasher
Toxostoma redivivum
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Evening Grosbeak
Coccothraustes vespertinus
Hermit Warbler
Setophaga occidentalis
Oak Titmouse
Baeolophus inornatus
Olive-sided Flycatcher
Contopus cooperi
Wrentit
Chamaea fasciata
Migratory Birds of Conservation Concern (10)

Birds of conservation concern identified by the U.S. Fish and Wildlife Service as potentially occurring based on range data. These species may warrant additional consideration under the Migratory Bird Treaty Act.

American Dipper
Cinclus mexicanus
Black-throated Gray Warbler
Setophaga nigrescens
California Thrasher
Toxostoma redivivum
Calliope Hummingbird
Selasphorus calliope
Cassin's Finch
Haemorhous cassinii
Evening Grosbeak
Coccothraustes vespertinus
Hermit Warbler
Setophaga occidentalis
Oak Titmouse
Baeolophus inornatus
Olive-sided Flycatcher
Contopus cooperi
Wrentit
Chamaea fasciata
Vegetation (9)

Composition from LANDFIRE 2024 EVT spatial analysis. Ecosystems classified per NatureServe Terrestrial Ecological Systems.

California Foothill Mixed Oak Woodland
Tree / Hardwood · 776 ha
GNR20.2%
California Mixed Conifer Forest
Tree / Conifer · 766 ha
GNR20.0%
California Mixed Conifer Forest
Tree / Conifer · 689 ha
GNR18.0%
California Chaparral
Shrub / Shrubland · 649 ha
GNR16.9%
GNR12.7%
California Foothill Blue Oak Woodland
Tree / Conifer · 211 ha
GNR5.5%
California Ruderal Scrub
Shrub / Exotic Tree-Shrub · 53 ha
1.4%
California Ruderal Grassland and Meadow
Herb / Exotic Herbaceous · 32 ha
0.8%

Polk Springs

Polk Springs Roadless Area

Lassen National Forest, California · 9,466 acres