Images

Logs and other debris flow downstream of the Bonnet Carre Spillway near Norco, La. The Army Corps of Engineers uses USGS streamflow data to help them manage flood control structures.

USGS scientists take streamflow and water quality measurements downstream of the Bonnet Carre Spillway near Norco, La. The Army Corps of Engineers uses USGS streamflow data to help them manage flood control structures.

USGS scientists take streamflow and water quality measurements downstream of the Bonnet Carre Spillway near Norco, La. The Army Corps of Engineers uses USGS streamflow data to help them manage flood control structures.

USGS scientists take streamflow and water quality measurements downstream of the Bonnet Carre Spillway near Norco, La. The Army Corps of Engineers uses USGS streamflow data to help them manage flood control structures.

USGS streamflow information is used by the U.S. Army Corps of Engineers to help them make informed flood management decisions. One floodgate on the Morganza Spillway was opened on May 14, 2011. 

This photo was taken before one of the floodgates on the Morganza Spillway was opened on May 14, 2011. USGS streamflow information is used by the U.S. Army Corps of Engineers to help them make informed flood management decisions.

USGS scientists installed a real-time camera to view the floodwaters below the Morganza spillway. This photo was taken before one floodgate was opened on May 14, 2011.

USGS scientists Todd Baumann and Errol Meche install a temporary streamgage to measure water levels above and below the the Morganza Spillway. USGS streamflow information is used by the U.S. Army Corps of Engineers to help them make informed flood management decisions. One floodgate on the Morganza Spillway was opened on May 14, 2011.

USGS scientist Garron Ross is interviewed by CCTV reporters about USGS streamflow information. USGS streamflow information is used by the U.S. Army Corps of Engineers to help them make informed flood management decisions.

One floodgate on the Morganza Spillway was opened on May 14, 2011. USGS streamflow information is used by the U.S. Army Corps of Engineers to help them make informed flood management decisions.

Floodwaters rise upstream of the Bonnet Carre Spillway near Norco, La. The Army Corps of Engineers uses USGS streamflow data to help them manage flood control structures.

USGS scientist Cindy Sibley looks at the rising waters on the Atchafalaya River Basin near Melville, La.

USGS scientists Cindy Sibley and Mike Descant calibrate the water quality monitor on the Atchafalaya River Basin near Melville, La.

USGS scientist Cindy Sibley prepares to take a water quality measurment on the Atchafalaya River Basin near Melville, La.

A complex configuration has been in place deep within the vent cavity in Halema`uma`u crater. Lava upwells in the west portion of the vent floor (upper left of photograph), feeding the small, crusted, circular lava lake.

The western Kamoamoa fountain-fed lava flows advanced over 1997 lavas (dark flow in foreground) with 1965 and 1968 lavas buried by Pu‘u ‘Ō‘ō cinder to the far left. Pu‘u ‘Ō‘ō is in the distant background.

A close-up of the swiftly moving lava stream, plunging into the lava lake.

USGS scientist Cindy Sibley prepares to take a water quality measurment on the Atchafalaya River Basin near Melville, La.

USGS scientists Mike Descant and Cindy Sibley take water quality measurements on the Atchafalaya River Basin near Melville, La.

USGS scientists Mike Descant and Cindy Sibley take water quality measurements on the Atchafalaya River Basin near Melville, La.

USGS scientist Mike Descant takes water quality measurements on the Atchafalaya River Basin near Melville, La.