Stealing a Stream

Stealing a Stream (HM1KE9)

Location: LaCrosse, WA 99143 Franklin County
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Country: United States of America
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N 46° 39.811', W 118° 13.649'

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Before the Ice Age floods, no stream or waterfall existed here. Instead, the Palouse River flowed through Washtucna Coulee. What caused the river to jump its course?

When the floods surged across the area, they cut a path through the fractured basalt beneath the Palouse Hills. Today, the river continues to follow the route created by the floods.

Transforming a Landscape
The floods stripped away hundreds of feet of soil and carved a maze of coulees, abandoned river channels, and buttes that extend 11 miles between Washtucna Coulee and the Snake River.

(Center Photo Caption)
Now dry, Washtucna Coulee was once the channel of the Palouse River.

(Right Map Caption)
The floods overwhelmed existing rivers and streams, spilling over the landscape and slamming into the Snake River. Most of the water flowed downriver towards the Columbia River, but some was forced upriver to Lewiston, Idaho and beyond.
HM NumberHM1KE9
Placed ByWashington State Parks
Marker ConditionNo reports yet
Date Added Wednesday, May 6th, 2015 at 2:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)11T E 406096 N 5168504
Decimal Degrees46.66351667, -118.22748333
Degrees and Decimal MinutesN 46° 39.811', W 118° 13.649'
Degrees, Minutes and Seconds46° 39' 48.66" N, 118° 13' 38.94" W
Driving DirectionsGoogle Maps
Area Code(s)509
Closest Postal AddressAt or near Palouse Falls Rd, LaCrosse WA 99143, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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