Images

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.

Great Lakes water availability studies conducted by the U.S. Geological Survey aim to help characterize how much water the Basin has now, how water availability is changing, and how much water it can expect to have in the future.

Diatoms are algae that reflect the biotic condition of streams, lakes and estuaries. Diatoms are important indicator organisms because they are sensitive to natural and human impacts, and monitoring their condition provides information about ecosystem health. A scanning electron micrograph (SEM) shows one valve of an unusual species within the genus Aneumastus.

Diatoms are algae that reflect the biotic condition of streams, lakes and estuaries. Diatoms are important indicator organisms because they are sensitive to natural and human impacts, and monitoring their condition provides information about ecosystem health. A large, living Pleurosira laevis cell has many disc shaped chloroplasts.

Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

Colorado River view.

Beth Stettner checks out the location of the IWRSS MOU signing.

Storm clouds moving in over the park.

Storm clouds moving in over the park entrance.

As part of an international collaboration, the USGS assessed water availability in Kabul, Afghanistan. The report can be found online.

Asbury (Abby) H. Sallenger has been named one of the authors of a chapter in the next IPCC report, due to be published in 2014. Sallenger has been assigned to co-author Chapter 5 of the Fifth Assessment Report, entitled Coastal Systems and Low-Lying Areas.

I took this picture while setting up a study of this invasive spp.  Of snail. 

Benthos sampling at Crane Creek, OH.

Solomon Gulch Top of Falls gage house in spring.

Hydrographer C.S. Couvillion drilling Willow Creek for ice discharge measurement.

Employee collectiing Water Quality data with instrument YSI 556mps handheld in creek swollen from spring melt.

Spring Rain at Hart Mountain.

Cattle Ranch with typically 100 head of cattle currently flooded from the spring melt of higher than average snow accumulation.

Work Continues even when Silvies River is about to flood over the bridge.

Our datalogger is attached to the bridge and much to our surprise, a dump truck drives across the bridge as we were contemplating the safety of crossing on foot.

Weather Station on Tern Island in the middle of Crump Lake protected by bird spikes.

Deploying a datalogger in the middle of Harney Lake.