Images

September 21, 1923, 9:00 a.m. --- Colorado River at Lees Ferry. From right bank on line with Klohr's house and gage house. Old "Dugway" or inclined gage shows to left of gage house. Gage height 11.05', discharge 27,000 cfs. Lens 16, time =1/25, camera supported. Photo by G.C. Stevens of the USGS. Source: 1921-1937 Surface Water Records File, Colorado R.

Oscar Edward Meinzer, First Chief, Groundwater Resources. He was an early or first scientist to recognize the elasticity of soils, and artesian wells, and its importance, to measuring water resources. circa 1916.

Hydrographer taking a cableway streamflow measurement at the first USGS streamgage at Embudo, New Mexico, established in 1889.

Embudo Student Hydrographers

USGS prersonnel at the Embudo Station, New Mexico. Embudo was selected as the site of the first USGS streamgaging station in 1889 because of the need for systematic water resource assessments of western states as it not only offered a favorable climate and easy rail access, but qualified for congressional funding tapped specifically for the “arid West.”

USGS staff checking the streamgage equipment on the San Saba River in Texas.

A hydrologic technician from the USGS Idaho Water Science Center measures streamflow in the St. Joe River at Red Ives Ranger Station in northern Idaho. The USGS is collecting data at hundreds of sites on rivers and streams in six western states to document the 2015 drought.

Brent Knights and Jon Vallazza conduct a river productivity study aboard the E.D. Cope, Upper Mississippi River System.

GPS unit on well head at a private drinking water well.

Alk titration in the field as part of NAWQA studies.

USGS employee Lisa Gee holds a spiny dogfish that she caught while hook and line sampling.

Stream flowing into the Potomac River in Whites Ferry, Virginia.

2009 Red River flooding in Grand Forks, North Dakota

This cyanobacteria has radiating filaments and basal heterocysts. Green is DNA stain.

Ash Falls on the Niobrara River showcases the Niobrara's uniqueness. Photo was taken to capture falls' legacy.

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.

Margaret Hiza Redsteer has been named one of the lead authors of a chapter in the next IPCC report, due to be published in 2014. Hiza Redsteer has been assigned as a lead author of Chapter 15 of the Fifth Assessment Report, entitled Adaption, Planning, and Implementation.

Stream in Great Smoky Mountains National Park.

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.

Souris River above Minot, North Dakota.

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.