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Trees and plants covered by high flood waters on a sunny day.
View of the Flooded St. Vrain River
View of the Flooded St. Vrain River
View of the Flooded St. Vrain River

Flooding from the St. Vrain River near Longmont, Colo., damaged portions of Highway 119, closing sections of the highway off from traffic. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

Flooding from the St. Vrain River near Longmont, Colo., damaged portions of Highway 119, closing sections of the highway off from traffic. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

Two USGS workers installing a streamgage on a bridge.
USGS Field Crew On-Site During the Sept 2013 Colorado Flood
USGS Field Crew On-Site During the Sept 2013 Colorado Flood
USGS Field Crew On-Site During the Sept 2013 Colorado Flood

Bob Brandle and Cory Stevens of the USGS Colorado Water Science Center record streamflow and water level measurements for the flooded St. Vrain River near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

Bob Brandle and Cory Stevens of the USGS Colorado Water Science Center record streamflow and water level measurements for the flooded St. Vrain River near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

Two USGS workers point toward a river from the edge of a bridge
USGS Field Crew Assesses the Flooded St. Vrain River
USGS Field Crew Assesses the Flooded St. Vrain River
USGS Field Crew Assesses the Flooded St. Vrain River

 

Matt Nicotra and and Kevin Scofield assess the flood status of the St. Vrain River off of Highway 119 near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

 

 

Matt Nicotra and and Kevin Scofield assess the flood status of the St. Vrain River off of Highway 119 near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

 

Four USGS people lift and move equipment.
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

Four USGS people lift and move equipment.
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

Two USGS people walking on a bridge toward a new streamgage
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood

A USGS Colorado Water Science Center field crew installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

A USGS Colorado Water Science Center field crew installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

Two USGS people look out over a bridge crossing a river.
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

Four USGS people working on equipment on the side of a bridge.
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

A USGS Colorado Water Science Center field crew (Bob Brandle, Cory Stevens, Matt Nicotra, and Kevin Scofield) installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River near Longmont, Colo.

USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood
USGS Field Crew Replaces Streamgages Damaged During Flood

A USGS Colorado Water Science Center field crew installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River off Highway 119 near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

A USGS Colorado Water Science Center field crew installs a temporary streamgage and takes streamflow and water level measures on the St. Vrain River off Highway 119 near Longmont, Colo. The river is one of many that flooded during a significant September 2013 rain event along Colorado's Front Range, damaging or destroying several USGS streamgages.

Snowpack-sampling pit at Berthoud Pass, Colorado.
Snowpack-sampling pit at Berthoud Pass, Colorado
Snowpack-sampling pit at Berthoud Pass, Colorado
Snowpack-sampling pit at Berthoud Pass, Colorado

Snowpack-sampling pit at Berthoud Pass, Colo.

Steep alpine terrain above snowpack-sampling site at Big Mountain, MT
Steep alpine terrain above snowpack-sampling site at Big Mountain, MT
Steep alpine terrain above snowpack-sampling site at Big Mountain, MT
Steep alpine terrain above snowpack-sampling site at Big Mountain, MT

Steep alpine terrain above snowpack-sampling site at Big Mountain, MT.

Coyote on trail to Canyon, Wyoming
Coyote on trail to Canyon, Wyoming
Coyote on trail to Canyon, Wyoming
Coyote on trail to Canyon, Wyoming

Coyote on trail to Canyon, Wyoming

Snowpack-sampling pit near Daisy Pass, Montana
Snowpack-sampling pit near Daisy Pass, Montana
Snowpack-sampling pit near Daisy Pass, Montana
Snowpack-sampling pit near Daisy Pass, Montana

Snowpack-sampling pit near Daisy Pass, Montana

Parking area for worker's snowmobiles near Deadman Pass, Colorado
Parking area for worker's snowmobiles near Deadman Pass, Colorado
Parking area for worker's snowmobiles near Deadman Pass, Colorado
Parking area for worker's snowmobiles near Deadman Pass, Colorado

Parking area for worker's snowmobiles near Deadman Pass, Colo

Moose on road to Lake Irene, Colorado
Moose on road to Lake Irene, Colorado
Moose on road to Lake Irene, Colorado
Moose on road to Lake Irene, Colorado

Moose on road to Lake Irene, Colorado

Andrews Creek
Andrews Creek
Andrews Creek
Andrews Creek

Andrews Creek

Snowpack-sampling pit near Fremont Pass, Colorado
Snowpack-sampling pit near Fremont Pass, Colorado
Snowpack-sampling pit near Fremont Pass, Colorado
Snowpack-sampling pit near Fremont Pass, Colorado

Snowpack-sampling pit near Fremont Pass, Colorado

Snow-density measurement in snowpack-sampling pit near Dunckley Pass, Colorado
Snow-density measurement near Dunckley Pass, Colorado
Snow-density measurement near Dunckley Pass, Colorado
Snow-density measurement near Dunckley Pass, Colorado

Snow-density measurement in snowpack-sampling pit near Dunckley Pass, Colorado

Snow-density measurement in snowpack-sampling pit near Dunckley Pass, Colorado

Snowpack-sampling pit near Dunckley Pass, Colorado
Snowpack-sampling pit near Dunckley Pass, Colorado
Snowpack-sampling pit near Dunckley Pass, Colorado
Snowpack-sampling pit near Dunckley Pass, Colorado

Snowpack-sampling pit near Dunckley Pass, Colo. Note discolored dust layers on left face (April 1, 2009).

Snowpack-sampling pit near Dunckley Pass, Colo. Note discolored dust layers on left face (April 1, 2009).

Workers try to free snowmobile from deep snow near Buffalo Pass, CO
Workers try to free snowmobile from deep snow near Buffalo Pass, CO
Workers try to free snowmobile from deep snow near Buffalo Pass, CO
Workers try to free snowmobile from deep snow near Buffalo Pass, CO

Workers try to free snowmobile from deep snow near Buffalo Pass, CO

Typical, deep snowpack at sampling pit at Buffalo Pass, Colorado
Typical, deep snowpack at sampling pit at Buffalo Pass, Colorado
Typical, deep snowpack at sampling pit at Buffalo Pass, Colorado
Typical, deep snowpack at sampling pit at Buffalo Pass, Colorado

Typical, deep snowpack at sampling pit at Buffalo Pass, Colorado