Road Marker Information

Description:

PDF map of White Water State Park

More infomation.

Enter Road Address in your cars GPS:
19041 MN-74, Altura, MN 55910

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Enter Geographical Coordinates in your cars GPS:

Latitude:      44°03’12.6″N
Longitude:   92°02’42.6″W

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Country: Winona County
Where Found:

 Located off state highway 74 in Whitewater State Park by a small lake across from the swimming beach.

Marker Number:188
Marker Composition: Stone with Bronze plaques

Text on Marker:

WHITEWATER STATE PARK

The bold and picturesque bluffs of the Whitewater Valley, from the Jordan sandstone below to the massive Oneota dolomite at the top, represent deposition during a hundred million years. Much of the erosion of these marine sedimentary rocks occurred later, during the great ice ages, caused by meltwater from the glaciers descending rapidly from the highlands into the flooded valley of the Mississippi River.

During the glacial high-water stages in the Mississippi Valley the velocity of the water in the Whitewater Valley was retarded. In consequence the sediments brought to the Whitewater River by its tributaries could not be carried any farther and were deposited on the valley floor.

Later, as the water level in the Mississippi Valley was lowered, the Whitewater River gained velocity and eroded downward into the accumulated sediments to the level of its present channel, leaving high on the valley walls alluvial terraces of sand and gravel to mark its elevation when the Whitewater River stood at a higher level.

Erected by the Geological Society of Minnesota and the Department of Conservation, State of Minnesota aided by a grant from the Louis W. and Maud Hill Family Foundation. 1955

Region: Southeastern Region

Date Updated: 20170226

Information Needed:

1. Marker Images

Condition of Marker: Good
Do it Yourself Region: Karst Country – Southeast Corner
Verification: Done – Lee