Minnesota Seasons - William O’Brien State Park


William O’Brien State Park

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			Washington County




Size	1,620 acres

Maps	Minnesota DNR All Season Map

Park Office	N45 13.497, W92 45.926

Hiking Trails	12 miles 1½ miles interpretive trail 2 miles handicapped accessible

Hunting	No hunting.

Ecological Classification	Province	Eastern Broadleaf Forest Province
	Section	Minnesota & NE Iowa Morainal
	Subsection(s)	St. Paul-Baldwin Plains
	Land Type Association(s)	Maplewood Moraine Stillwater Alluvial Plain

Native Plant Communities¹	Black Ash - (Red Maple) Seepage Swamp Dry Sand - Gravel Prairie (Southern) Northern Rich Fen (Basin) Oak - (Red Maple) Woodland Sand Beach/Sandbar (River): Permanent Stream Subtype Silver Maple - (Virginia Creeper) Floodplain Forest Southern Seepage Meadow/Carr Tamarack Swamp (Southern)

Ownership	Minnesota Department of Natural Resources

Links	Minnesota DNR

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Park Entrance





Birds	Minnesota DNR Bird Checklist

	American Crow (Corvus brachyrhynchos) Eastern Bluebird (Sialia sialis) Eastern Kingbird (Tyrannus tyrannus) Eastern Meadowlark (Sturnella magna) Red-tailed Hawk (Buteo jamaicensis) Tree Swallow (Tachycineta bicolor)

Plants	Skunk cabbage (Symplocarpus foetidus) can be found in early spring along seepage streams. Plants frequently found in: Black Ash - (Red Maple) Seepage Swamp WFs57a Dry Sand - Gravel Prairie (Southern) UPs13b Northern Rich Fen (Basin) OPn92 Oak - (Red Maple) Woodland FDs37a Sand Beach/Sandbar (River): Permanent Stream Subtype RVx32b2 Silver Maple - (Virginia Creeper) Floodplain Forest FFs68a Southern Seepage Meadow/Carr WMs83 Tamarack Swamp (Southern) FPs63a

	bird’s-foot trefoil (Lotus corniculatus var. corniculatus) Canada anemone (Anemone canadensis) grayleaf red raspberry (Rubus idaeus ssp. strigosus) ground ivy (Glechoma hederacea) red clover (Trifolium pratense) red pine (Pinus resinosa) sundial lupine (Lupinus perennis var. perennis) Virginia waterleaf (Hydrophyllum virginianum var. virginianum) white campion (Silene latifolia ssp. alba) wild columbine (Aquilegia canadensis) wild geranium (Geranium maculatum) yellow sweet clover (Melilotus officinalis)

Visits	6/6/2000 2/22/2011 9/5/2011