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Weldon Spring in St. Charles County, Missouri — The American Midwest (Upper Plains)
 

Weldon Spring Conservation Area and Wetlands

 
 
Weldon Spring Conservation Area and Wetlands Marker image. Click for full size.
Photographed by Jason Voigt, October 28, 2024
1. Weldon Spring Conservation Area and Wetlands Marker
Inscription.

Weldon Spring Conservation Area History

•In the 1790s, North Carolina frontiersman John Weldon settled in the area with a 425-acre Spanish land grant. Weldon built a log home on high ground overlooking a spring, for which the town Weldon Spring was later named.

•During World War II, the federal government acquired 17,000 acres in the area and built the world's largest TNT and ONT manufacturing facility to support the U.S. Army's war effort.

•In 1948, the federal government gave all of the property except the munitions plant to the University of Missouri for use as an agricultural and forestry experiment station.

•The Missouri Department of Conservation purchased a portion of the property from the University in 1978 to set aside as a conservation area. The Weldon Spring Conservation Area includes two tracts of land totaling more than 8,300 acres.

•The Katy Trail passes through the conservation area and parallels the Missouri River for 5.3 miles.

•The conservation area is rich in natural resources and contains the Weldon Spring Hollow Natural Area. This unique 385-acre natural area consists of dry mesic uplands, bottomland forests, rugged river breaks, limestone cliffs and bluff escarpments. The landscape is similar to that of the Ozark Mountains in Southern
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Missouri.

•The Missouri River borders the entire southern edge of the conservation area.

Abundant Flora and Fauna

•Many of the forested hills in this area are steep and rocky, dominated by oak and hickory trees and a rich (unreadable) wildflowers. Species include Bloodroot, Dutchman's Breeches, Spring Beauty, Dog-tooth Violet, Wake Robin, Jack on the Pulpit, Adam and Eve Orchid and Lead Plant.

•The conservation area also is home to a wide variety of wildlife including mammals, birds, reptiles and amphibians. Watch for White-tailed Deer, wild turkey, raccoon, Fox Squirrel, Three-toed Box Turtles and Ornate Box Turtles.

•Most acres of the conservation area provide valuable breeding, foraging and nesting habitat for a wide variety of migratory songbirds such as the Acadian Flycatcher, Red-eyed Vireo, Worm-eating Warbler, Wood Thrush and Ovenbird.

Wetlands

•The large wetland at the base of the river bluff receives clean, treated water from Duckett Creek Sanitary Plant, recharging the wetland year-round, even during drought conditions.

•During high water levels, the area also is flooded by the river, which recharges the wetland with water and nutrients. Flooding allows fish such as the Long-nose Gar and Mosquitofish to enter the wetland.

•This wetland is home to Wood Ducks,
Weldon Spring Conservation Area and Wetlands Marker image. Click for full size.
Photographed by Jason Voigt, October 28, 2024
2. Weldon Spring Conservation Area and Wetlands Marker
Marker is located on the Busch Greenway trail
Great Blue Heron, Red-eared Slider Turtles and Northern Water Snakes. Beaver are active in the area, building dams that alter water levels.

•A wetland is typically a low-lying area covered with shallow water. Sometimes called swamps, marshes, bogs or sloughs, wetlands are important ecosystems because they act as biological filters to cleanse polluted water. They help reduce the impact of flooding, protecting shorelines from erosion and recharging groundwater aquifers. Wetlands provide habitat to a rich diversity of wildlife, and consequently provide recreation through wildlife viewing, boating, hunting and fishing.
 
Erected by Great Rivers Greenway.
 
Topics. This historical marker is listed in these topic lists: AnimalsHorticulture & ForestrySettlements & SettlersWaterways & Vessels. A significant historical year for this entry is 1948.
 
Location. 38° 41.24′ N, 90° 40.954′ W. Marker is in Weldon Spring, Missouri, in St. Charles County. It can be reached from Busch Greenway. Marker is on Busch Greenway near the Katy Trail junction, on the right when traveling south. Marker is located at the junction of the Busch Greenway and Katy Trails. The nearest road and parking lot is 0.6 miles off the Busch Greenway trail. Touch for map. Marker is in this post office area: Lake Saint Louis MO 63367, United States of America. Touch for directions.

Regionally, this marker is in the Missouri River Corridor and in Greater St. Louis. It is also in the American Midwest, in the Lewis & Clark Corridor, in the Corn Belt, and in the Great River Road Region. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once the territory of the Mississippian Culture, the Louisiana Purchase, and the Antebellum South.

Other nearby markers.
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At least 8 other markers are within 2 miles of this marker, measured as the crow flies: Busch Greenway - Trail to Missouri Research Park (about 300 feet away, measured in a direct line); Missouri Research Park and Vicinity (approx. half a mile away); What is the White Globe Over the Trees? (approx. 0.9 miles away); Pecan Legacy Park (approx. 1.6 miles away); Pecan Tree (approx. 1.6 miles away); Prairie Lake (approx. 1.6 miles away); Renewing Grasslands with Fire (approx. 1.8 miles away); "TNT" (approx. 1.8 miles away). Touch for a list and map of all markers in Weldon Spring.
 
 
Credits. This page was last revised on November 8, 2024. It was originally submitted on November 8, 2024, by Jason Voigt of Glen Carbon, Illinois. This page has been viewed 382 times since then and 26 times this year. Photos:   1, 2. submitted on November 8, 2024, by Jason Voigt of Glen Carbon, Illinois.
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Jun. 6, 2026