Historic Floods in Colorado - September 2013

Analysis Center

Historic Flooding in Colorado

September 2013

Overview of the affected area.

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Historic Flooding in Colorado - September 2013 Lyons and Longmont, Colorado

Lyons

Longmont

Boulder

Denver

US Highway 36

North St. Vrain Creek

South St. Vrain Creek

DigitalGlobe Natural Color Imagery, September 14, 2013

Overview of flooding in Lyons Lyons, Colorado 40.224503N 105.268955W

US Highway 36

St. Vrain River


Damage to bridges and US Highway 36 Lyons, Colorado 40.224503N 105.268955W

Lyons Junior-Senior High School

Lyons Waste Water Treatment Plant

McConnell Drive bridge washed out

Damage to US Highway 36

US Highway 36

North St. Vrain Creek



Flooding in Lyons Lyons, Colorado 40.221171N 105.270792W

State Highway 7

Considerable flooding in area of confluence of North and South St. Vrain Creeks

Water release through emergency overflow spillway

Controlled water release at base of dam


Button Rock Dam and Reservoir West of Lyons, Colorado 40.217951N 105.363785W

Button Rock Reservoir

Lyons is 5 miles downstream via North St. Vrain Creek

Flooded areas and damaged roads

State Highway 7



Flooding upstream in South St. Vrain Creek Lyons, Colorado 40.210411N 105.281678W

DigitalGlobe Natural Color Imagery September 13, 2013

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Flooding along St. Vrain River Lyons to Longmont, Colorado 40.185989N 105.174558W

Longmont Airport

Area most affected by flooding along the St. Vrain River

City of Longmont

Town of Lyons


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Flooding along St. Vrain River near Airport Road Longmont, Colorado 40.172642N 105.148429W

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oad

St. Vrain river channel

Longmont Vance Brand Municipal

Airport

approximately 1mile

Twin Peaks Golf Course

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et

West 9th Avenue


Heavy flooding near Price Road and Boston Avenue Longmont, Colorado 40.159490N 105.112523W



Flooding near Twin Peaks Golf Course Longmont, Colorado 40.175535N 105.146825W

The Greens neighborhood

BNSF railroad

Twin Peaks Golf Course


Flooding near Fairgrounds along Hover Street Longmont, Colorado 40.161590N 105.128900W

Boulder County Fairgrounds



Left Hand Creek flooding near Pike Road Longmont, Colorado 40.137136N 105.116679W

Left Hand Creek


Flooding along Boulder Creek at 95th Street Eastern Boulder County, Colorado 40.050315N 105.131200W

Boulder Creek channel

Historic Floods in Colorado - September 2013

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