Images

As schools close for the year and summer weather beckons, many recreationalists head to the Great Lakes' public beaches. However, these coastal areas can become contaminated with disease-causing bacteria that threaten public health, disrupt water recreation, and pay a toll on the Great Lakes economies that depend on summer tourism.

The dry climate of the Borderlands increases the challenge of balancing water supplies between humans and ecosystems. Here, two horses and their riders observe the low water levels of a river.

A screenshot from the USGS film "Living with Fire".

USGS is investigating ways to balance community fire risk management and native habitat conservation as part of the USGS Southern California Wildfire Risk Scenario Project, analyzing both human factors and natural factors.

Birds found in and around the Salton Sea, California.

USGS lake elevation gage on Lewy Lake at Princeton, Maine, station 01019300. 

This photo from our second cross section is an example of significant changes to the river. Data was collected from this location in 2009 from a manned boat, with no issue. Upon return to the same cross section in 2013 we found a 2-4 ft hydraulic feature exposed. Backwater from the Great Works Dam hid this feature previously. 

A photo from August 2013 after removal of the Great Works Dam, showing the old concrete, wood and stone cribbing upstream of where the dam used to be.

A photo from August 2013 showing the cribbing upstream of where the dam used to be. See the photo titled 'Station 4 2009' for a picture from before the dam was removed from the same general perspective.

Florida panther; Puma concolor coryi, remains one of the most endangered mammals in the world.

Blue tents in Longmen near epicenter.

Firemen and the rescue team building tents for homeless people in a middle school square.

Damage to a village house. Longmenxiang.

Muir Glacier has retreated more than 2 km and ceased to have a tidewater terminus. Note that the retreat of Muir Glacier has left several ice-cored morainal mounds between the shoreline and the terminus.

Two birds wading: note the diferences in size and bill: the bigger is the Greater.

Gastrocopta germindens shell viewed with a scanning electron microscope.

Gastrocopta gularis shell viewed with a scanning electron microscope.

Gastrocopta servilis shell viewed with a scanning electron microscope with a zoom-in of the aperture.

Strobilops sp. shell viewed with a scanning electron microscope with aperture facing up.

Close-up view of Thysanophora crinita shell viewed with a scanning electron microscope.

Miradiscops panamensis shell viewed with a scanning electron microscope with aperture facing up.

Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.