Marker Logo HMdb.org THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
“Bite-Size Bits of Local, National, and Global History”
Great Falls in Cascade County, Montana — The American West (Mountains)
 

Where Does the Water Come From?

 
 
Where Does the Water Come From? Marker image. Click for full size.
By Duane Hall, August 12, 2010
1. Where Does the Water Come From? Marker
Inscription. Geologists have determined that water seeps into the ground southeast of Great Falls in the Little Belt Mountains, where the Madison Limestone formation is exposed at the land surface. The water then travels through the formation toward Giant Springs.

In the springs area, the Madison Formation is about 400 feet below the surface. Pressure caused by the overlying rock layers forces the water from the Madison to escape upward, through the cracks in the overlying sandstone. These cracks are visible in the photo at right.

It takes less than 50 years for water to flow from the Little Belt Mountains to the Giant Springs area. The water emerges from the ground at a consistent 54 degrees, all year long.

(Photo caption)
Water escapes through the cracks, forming Giant Springs, photo courtesy of Christopher Dantic
 
Erected by Montana State Parks.
 
Location. 47° 32.069′ N, 111° 13.786′ W. Marker is in Great Falls, Montana, in Cascade County. Marker can be reached from Giant Springs Road 1.3 miles north of River Drive North. Touch for map. Marker is located in Giant Springs State Park; the above directions are to the main driveway to the park. Marker is at or near this postal
Roe River Headed to the Missouri River image. Click for full size.
By Duane Hall, August 12, 2010
2. Roe River Headed to the Missouri River
Marker is the nearest marker on the right
address: 4803 Giant Springs Rd, Great Falls MT 59405, United States of America.
 
Other nearby markers. At least 4 other markers are within 6 miles of this marker, measured as the crow flies. The Smallest River Runs Through It (a few steps from this marker); A "great" Set of Falls (approx. 0.4 miles away); Cascade County Courthouse (approx. 3.8 miles away); Formation of the Gorge and Falls (approx. 5.6 miles away).
 
More about this marker. The marker is an interpretive sign that is part of the Lewis and Clark National Historic Trail.
 
Also see . . .
1. Giant Springs State Park. From the official Montana State Parks website. (Submitted on April 29, 2015.) 

2. Giant Springs - Wikipedia entry. (Submitted on April 29, 2015.)
 
Categories. Natural Features
 
Giant Springs Next to the Missouri River image. Click for full size.
By Duane Hall, August 12, 2010
3. Giant Springs Next to the Missouri River
 
 
Credits. This page was last revised on June 16, 2016. This page originally submitted on April 29, 2015, by Duane Hall of Abilene, Texas. This page has been viewed 208 times since then and 33 times this year. Photos:   1, 2, 3. submitted on April 29, 2015, by Duane Hall of Abilene, Texas.
Paid Advertisement