Twin Lakes SNA

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Area and County

Isanti County





48 acres

Printable map

Printable Map with GPS coordinates


County Road 9 (north shoulder)
N45 27.132, W93 2.961

Park on the shoulder of the road. Do not park at the field approach on Cty. Rd. 9—that is private property.

Hiking Trails

None. There is an old forest road, now barely visible on the ground, that follows at a short distance the south and west shore of Horseshoe Lake.


Youth deer hunt only. See Hunting and Trapping Regulations (MN DNR) for details.

Ecological Classification


Eastern Broadleaf Forest Province

Ecological Classification


Minnesota & NE Iowa Morainal


Anoka Sand Plain

Land Type Association(s)

Anoka Lake Plain

Native Plant Communities1 Oak - (Red Maple) Woodland

Ownership Minnesota DNR logo        

Minnesota DNR


This SNA was designated June 28, 2010.






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South Parking

  Twin Lakes SNA    

Wood Routed Sign, East Parking

  Twin Lakes SNA    

Oak - (Red Maple) Woodland

  Twin Lakes SNA   Twin Lakes SNA

Horseshoe Lake

  Twin Lakes SNA    





  Twin Lakes SNA
  Twin Lakes SNA  

Twin Lakes SNA lies in an extensive nearly level to gently undulating lowland on the Anoka Sand Plain. The primary plant community at this site is White Pine-Hardwood Forest with habitat for state threatened Blandings turtle and state special concern red-shouldered hawk. The most notable characteristic of the surrounding landscape are the diverse wetland complexes. Wetland types such as mixed hardwood swamp, tamarack swamp, shrubs swamp, marsh, and bog lakes have escaped serious disturbance.







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Visitor Observations

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American toad (Anaxyrus americanus)

American toad


One bird species with conservation status in Minnesota and one tracked species have been seen here:


Special concern

Red-shouldered Hawk (Buteo lineatus)



Bald Eagle (Haliaeetus leucocephalus)


American Crow (Corvus brachyrhynchos)

Bald Eagle (Haliaeetus leucocephalus)

Black-capped Chickadee (Poecile atricapillus)

Blue Jay (Cyanocitta cristata)

Common Loon (Gavia immer)

Mallard (Anas platyrhynchos)

Mourning Dove (Zenaida macroura)

Ovenbird (Seiurus aurocapillus)

Pileated Woodpecker (Dryocopus pileatus)

Red-bellied Woodpecker (Melanerpes carolinus)

Ring-necked Pheasant (Phasianus colchicus)

Turkey Vulture (Cathartes aura)

Wild Turkey (Meleagris gallopavo)

Black-capped Chickadee


Mourning Dove

Wild Turkey

Fungi and Lichens

Black Knot (Apiosporina morbosa)

Crown Rust (Puccinia coronata)

Black Knot

Insects and Arachnids

American dog tick (Dermacentor variabilis)

blacklegged tick (Ixodes scapularis)

chalk-fronted corporal (Ladona julia)

chokecherry finger gall mite (Eriophyes emarginatae)

common baskettail (Epitheca cynosura)

eastern tent caterpillar moth (Malacosoma americanum)

eastern tiger swallowtail (Papilio glaucus)

four-spotted skimmer (Libellula quadrimaculata)

maple bladdergall mite (Vasates quadripedes)

monarch (Danaus plexippus)

mourning cloak (Nymphalis antiopa)

orange sulphur (Colias eurytheme)

red admiral (Vanessa atalanta)

white admiral (Limenitis arthemis arthemis)

white-lined sphinx (Hyles lineata)

chalk-fronted corporal

finger gall of chokecherry finger gall mite

eastern tent caterpillar



whitetail deer (Odocoileus virginianus)

whitetail deer


Plants frequently found in:

Oak - (Red Maple) Woodland FDs37a



alfalfa (Medicago sativa ssp. sativa)

Allegheny blackberry (Rubus allegheniensis)

alsike clover (Trifolium hybridum)

American elderberry (Sambucus nigra ssp. canadensis)

American red raspberry (Rubus idaeus ssp. strigosus)

American starflower (Lysimachia borealis)

arrow-leaved violet (Viola sagittata var. sagittata)

bigleaf aster (Eurybia macrophylla)

bigtooth aspen (Populus grandidentata)

black bindweed (Fallopia convolvulus)

black cherry (Prunus serotina var. serotina)

black-seeded plantain (Plantago rugelii var. rugelii)

bland sweet cicely (Osmorhiza claytonii)

boxelder (Acer negundo var. negundo)

bur oak (Quercus macrocarpa var. macrocarpa)

Canada mayflower (Maianthemum canadense)

Canadian woodnettle (Laportea canadensis)

chokecherry (Prunus virginiana var. virginiana)

cinnamon fern (Osmundastrum cinnamomea)

cleavers (Galium aparine)

common buckthorn (Rhamnus cathartica)

common cinquefoil (Potentilla simplex)

common dandelion (Taraxacum officinale ssp. officinale)

common false Solomon’s seal (Maianthemum racemosum var. racemosum)

common milkweed (Asclepias syriaca)

common mullein (Verbascum thapsus ssp. thapsus)

common ragweed (Ambrosia artemisiifolia)

common strawberry (Fragaria virginiana)

common yarrow (Achillea millefolium)

cream pea (Lathyrus ochroleucus)

curly dock (Rumex crispus)

eastern prickly gooseberry (Ribes cynosbati)

eastern redcedar (Juniperus virginiana var. virginiana)

eastern white pine (Pinus strobus)

field horsetail (Equisetum arvense)

fragrant bedstraw (Galium triflorum)

grove sandwort (Moehringia lateriflora)

hoary alyssum (Berteroa incana)

interrupted fern (Osmunda claytoniana)

Jack-in-the-pulpit (Arisaema triphyllum)

northern bedstraw (Galium boreale)

northern lady fern (Athyrium filix-femina ssp. angustum)

northern pin oak (Quercus ellipsoidalis)

northern prickly ash (Zanthoxylum americanum)

northern red oak (Quercus rubra)

paper birch (Betula papyrifera var. papyrifera)

prickly rose (Rosa acicularis ssp. sayi)

quackgrass (Elymus repens)

red clover (Trifolium pratense)

red maple (Acer rubrum var. rubrum)

round-headed bush clover (Lespedeza capitata)

royal fern (Osmunda regalis var. spectabilis)

sensitive fern (Onoclea sensibilis)

silvery cinquefoil (Potentilla argentea)

smooth blackberry (Rubus canadensis)

smooth rose (Rosa blanda var. blanda)

smooth Solomon’s seal (Polygonatum biflorum var. commutatum)

smooth sumac (Rhus glabra)

spreading dogbane (Apocynum androsaemifolium)

starry false Solomon’s seal (Maianthemum stellatum)

stinging nettle (Urtica dioica ssp. gracilis)

tree groundpine (Lycopodium dendroideum)

western bracken fern (Pteridium aquilinum var. latiusculum)

western poison ivy (Toxicodendron rydbergii)

western ragweed (Ambrosia psilostachya)

white rattlesnake root (Nabalus albus)

wild columbine (Aquilegia canadensis)

wild grape (Vitis riparia)

wild oats (Uvularia sessilifolia)

wild sarsaparilla (Aralia nudicaulis)

woodbine (Parthenocissus vitacea)

woodland strawberry (Fragaria vesca ssp. americana)


Acer negundo var. negundo (boxelder)

Acer rubrum var. rubrum (red maple)

Achillea millefolium (common yarrow)

Ambrosia artemisiifolia (common ragweed)

Ambrosia psilostachya (western ragweed)

Apocynum androsaemifolium (spreading dogbane)

Aquilegia canadensis (wild columbine)

Aralia nudicaulis (wild sarsaparilla)

Arisaema triphyllum (Jack-in-the-pulpit)

Asclepias syriaca (common milkweed)

Athyrium filix-femina ssp. angustum (northern lady fern)

Berteroa incana (hoary alyssum)

Betula papyrifera var. papyrifera (paper birch)

Elymus repens (quackgrass)

Equisetum arvense (field horsetail)

Eurybia macrophylla (bigleaf aster)

Fallopia convolvulus (black bindweed)

Fragaria vesca ssp. americana (woodland strawberry)

Fragaria virginiana (common strawberry)

Galium aparine (cleavers)

Galium boreale (northern bedstraw)

Galium triflorum (fragrant bedstraw)

Juniperus virginiana var. virginiana (eastern redcedar)

Laportea canadensis (Canadian woodnettle)

Lathyrus ochroleucus (cream pea)

Lespedeza capitata (round-headed bush clover)

Lycopodium dendroideum (tree groundpine)

Lysimachia borealis (American starflower)

Maianthemum canadense (Canada mayflower)

Maianthemum racemosum var. racemosum (common false Solomon’s seal)

Maianthemum stellatum (starry false Solomon’s seal)

Medicago sativa ssp. sativa (alfalfa)

Moehringia lateriflora (grove sandwort)

Nabalus albus (white rattlesnake root)

Onoclea sensibilis (sensitive fern)

Osmorhiza claytonii (bland sweet cicely)

Osmunda claytoniana (interrupted fern)

Osmunda regalis var. spectabilis (royal fern)

Osmundastrum cinnamomea (cinnamon fern)

Parthenocissus vitacea (woodbine)

Pinus strobus (eastern white pine)

Plantago rugelii var. rugelii (black-seeded plantain)

Polygonatum biflorum var. commutatum (smooth Solomon’s seal)

Populus grandidentata (bigtooth aspen)

Potentilla argentea (silvery cinquefoil)

Potentilla simplex (common cinquefoil)

Prunus serotina var. serotina (black cherry)

Prunus virginiana var. virginiana (chokecherry)

Pteridium aquilinum var. latiusculum (western bracken fern)

Quercus ellipsoidalis (northern pin oak)

Quercus macrocarpa var. macrocarpa (bur oak)

Quercus rubra (northern red oak)

Rhamnus cathartica (common buckthorn)

Rhus glabra (smooth sumac)

Ribes cynosbati (eastern prickly gooseberry)

Rosa acicularis ssp. sayi (prickly rose)

Rosa blanda var. blanda (smooth rose)

Rubus allegheniensis (Allegheny blackberry)

Rubus canadensis (smooth blackberry)

Rubus idaeus ssp. strigosus (American red raspberry)

Rumex crispus (curly dock)

Sambucus nigra ssp. canadensis (American elderberry)

Taraxacum officinale ssp. officinale (common dandelion)

Toxicodendron rydbergii (western poison ivy)

Trifolium hybridum (alsike clover)

Trifolium pratense (red clover)

Urtica dioica ssp. gracilis (stinging nettle)

Uvularia sessilifolia (wild oats)

Verbascum thapsus ssp. thapsus (common mullein)

Viola sagittata var. sagittata (arrow-leaved violet)

Vitis riparia (wild grape)

Zanthoxylum americanum (northern prickly ash)

alsike clover

American elderberry

black bindweed

black cherry

bur oak (var. macrocarpa)


common dandelion

common false Solomon’s seal

common mullein

common yarrow

fragrant bedstraw

hoary alyssum

northern bedstraw

northern prickly ash

round-headed bush clover

silvery cinquefoil

spreading dogbane

western poison ivy flowers

wild columbine



One reptile species with conservation status in Minnesota has been seenhere:



Blanding’s turtle (Emydoidea blandingii)




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