Images

Although large streamgage structures are no longer necessary, the USGS still uses some of them to contain modern streamgage equipment.

Time series imagery (1957, 1989, 2018) shows the progressive disconnection of tributary branches from Lemon Creek Glacier. In each panel, the glacier extent is outlined in orange. Over time, thinning and retreat isolate formerly connected accumulation areas, reducing ice flux into the main trunk.

Artesian well investigations in South Dakota (circa-July 1957).

Artesian well investigations in South Dakota (circa 1956-62).

U.S. Geological Survey streamflow-gaging station 08109000 Brazos River near Bryan, Texas, looking upstream from left bank, February 5, 1954.

SIR 2009–5174

U.S. Geological Survey streamflow-gaging station 08110500 Navasota River near Easterly, Texas, looking downstream from left bank, December 5, 1941.

SIR 2009–5174

U.S. Geological Survey streamflow-gaging station 08110500 Navasota River near Easterly, Texas, looking upstream, June 7, 1934.

SIR 2009–5174

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.