Images

A manatee swims downstream from a weir in Faka Union Canal known to create a strong salinity gradient downstream.

A USGS technician finishes construction on a monitoring station used to monitor surface salinity and temperature below Faka Union Canal Weir #1, Florida. By measuring hydrologic conditions here, researchers found that freshwater flow rates help maintain warm water pockets in downstream areas of the canal.

Western Santa Rosa Island moderate waves weather scenario.

The Faka Union Canal Weir #1 (Collier County, Florida) helps create a downstream hydrological haven for manatees. During the cold winter months, the right flow conditions can maintain a salinity gradient known as a halocline that traps warm water near the bottom of the residential canals at Port of the Islands.

USGS Sirenia Project researchers studying manatees in Florida.

You may notice a green, red or brown film on your favorite boating or swimming area in the summer. This coloring could mean that the water is affected by harmful algal blooms. Harmful algal blooms are an accumulation of tiny organisms known as algae and can release harmful toxins into the environment.

You may notice a green, red or brown film on your favorite boating or swimming area in the summer. This coloring could mean that the water is affected by harmful algal blooms. Harmful algal blooms are an accumulation of tiny organisms known as algae and can release harmful toxins into the environment. Pictured here is a bloom on the shore of Lake Dora, FL.

You may notice a green, red or brown film on your favorite boating or swimming area in the summer. This coloring could mean that the water is affected by harmful algal blooms. Harmful algal blooms are an accumulation of tiny organisms known as algae and can release harmful toxins into the environment. Pictured here is Binder Lake in Iowa covered in algal blooms.

Earthquake-triggered landslide on south coast of Haiti near village of Nan Diamant.

Boulders of intact limestone that fell and rolled during the earthquake from cliffs along the Haiti earthquake fault zone.

This photo shows the dense concentration of landslides in limestone near the Haiti earthquake fault zone.

The plume from the Puhi-o-Kalaikini ocean entry is easily visible from Highway 130, on the hill descending towards Kalapana. Just in front of the ocean entry plume, the houses of Kalapana Gardens subdivision can be seen on the 1990 lava flows.

Scientists pull a seine net through a blocked-off section of a man-made ditch to estimate fish abundance.

Technician processes fish samples brought in from mangroves.

Weather station site, Shenandoah National Park.

Stream near Pocosin weather station site, Shenandoah National Park.

Break up of river, late May in Alaska.

Schools out !. Bus passing by largest Burr Oak in Missouri.

Gulf of Mexico Near Destin

Photograph of Bivachnyy Glacier, a surging valley glacier in the central Pamir Mountains. The glacier has a thick debris cover derived from adjacent mountains. Photograph courtesy of V.M. Kotlyakov, Russian Academy of Sciences, Moscow.

ARRA-funded student Taryn Lopez (Univ. Alaska-Fairbanks) sampling gas emissions at fumarole next to dome at the summit of Augustine volcano.