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Woodman Hollow State State Nature Preserve

Woodman Hollow State, United States

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Description

Woodman Hollow State Preserve is located in Webster County, Iowa, 7 miles (11 km) miles southeast of Fort Dodge and 6 miles (9.7 km) northwest of Lehigh. The preserve is a satellite area of Dolliver Memorial State Park, located 2 miles to the south. Some older maps refer to the area as "Woodman's Hollow State Park."

Many of the rock bluffs lining the interior of the preserve are composed of sandstones, limestones, and dolostones. The rock was produced over time from chemical and physical processes acting on the bed of ancient marine seaways that once covered vast portions of North America between 65 and 550 million years ago. The shoreline of the ancient seaways migrated back and forth from roughly Oklahoma to Illinois, and the river delta systems deposited clay, mud, peat, and channel sands across the area. Over time, these deposits were compacted and cemented into the familiar rock formations observed today. Significant erosion of glacial deposits by the Des Moines River and associated tributaries has helped to expose these deposits over time after the retreat of the Wisconsin Glaciation about 12,000 to 14,000 years before present. Two man-made rock shelters found within the preserve provided evidence to suggest that Woodland Indians or Archaic Indians inhabited the area as early as 2,800 years before present.

The Iowa Board of Conservation purchased the land that would become Woodman Hollow in 1927 from A. S. Woodman. The original intent of the area was for it to be developed as a state park, and in the 1930s the Civilian Conservation Corps constructed an access road, two latrines, some trails, and the foundations for a trail bridge. The State of Iowa later decided to discontinue development of the area and to leave it in its natural condition. The land was officially designated as a biological, geological, and archaeological state preserve on August 12, 1970.

The preserve features several deep, forested ravines, which combine into a larger ravine with a small creek that empties into the Des Moines River. The creek is spring and runoff fed. Sandstone bedrock lines the ravine walls. Several small cascades and waterfalls up to 12 feet (3.7 m) high have carved a shallow gorge through the center of the preserve. The two latrines constructed decades ago were not removed after efforts to develop the area into a state park were abandoned, and have fallen into heavy dis-repair. The access road was removed, and most trails within the park have eroded away or have become overgrown, except for those maintained by the footsteps of infrequent visitors.

Over 500 species of plants can be found within Woodman Hollow. The preserve is said to have one of the largest varieties of ferns in the state of Iowa. Trees found in the area include white and red oak in the uplands. Numerous old growth trees, some over 300 years in age, exist within the boundaries of the preserve, some old enough to be used in climate reconstruction through Dendrochronology. Near the river, steep ravine walls on both sides of the creek exceed 100 feet (30 m) in height - steep enough to vary the species of flora over short distances.

The entrance to the preserve is on Woodman's Hollow Road, 3 miles (4.8 km) east of Otho. A small, grassy parking area provides a space for two vehicles. The entrance to the main area of the preserve is a narrow, overgrown corridor between two farm fields that heads south for roughly 1,000 feet (300 m), which is the old access road grade. The largest of the waterfalls and the beginning of the shallow gorge are directly south of the entrance corridor.

No hunting or camping is allowed within the boundaries of the preserve.

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Nearest protected areas

Lizard Creek

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Official Record

  • WDPA ID44443335
  • NameWoodman Hollow State
  • Original NameWoodman Hollow State
  • Country / TerritoryUSA
  • Sub locationUS-IA
  • IUCN CategoryIVWhat is this?
  • English DesignationState Nature Preserve
  • Designation TypeNational
  • StatusDesignated
  • Status YearUnknown
  • Reported Area km20.0
  • Marinefalse
  • Governance TypeSub-national ministry or agency
  • International CriteriaNot Applicable
  • Management AuthorityOther State Land
  • Management Plan URLNot Reported

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US Geological Survey (USGS) National Biological Information Infrastructure (NBII) Gap Analysis Program (GAP) (2010)


The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations.

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