Images

Diagram of a typical streamgage installation with equipment used to measure stream stage (by L.S. Coplin, U.S. Geological Survey).

USGS Stage-Discharge Relation Example.

Satellite image of Tropical Storm Lee

Missouri River site map for summer 2011 flood

Mississippi River flooding map

Hurricane Irene storm surge map

Drought Conditions in the lower Apalachicola-Chattahoochee-Flint River Basin in July 2011: USGS measured streamflow at 267 sites in the lower ACF Basin and western and central parts of the Aucilla–Suwanee–Ochlockonee River basin during July 2011 to measure the effects of drought and irrigation withdrawals on streamflow.

Benbrook Lake, December 2011. Photograph by Glenn Harwell, U.S. Geological Survey.

SIR 2012–5202

Colorado River, and Roaring Fork River confluence, Glenwood Springs, Garfield County, CO

Screen capture of ModelMuse with the words "Note that the symbol for the vertex is now a diamond insead of a square."

This image is inteded to be used as the thumbnail for a video.

Screen capture of GW_Chart and ModelMuse showing a time series of simulated river leakage.

This image is a screen capture of the ModelMuse Object Properties dialog box with the words ""you can have zero, one, or two third-dimension formulas." It is meant to be used as the thumbnail for a video.

This image is a screen capture of ModelMuse with the words "This video will give a brief example of how to use MODPATH with ModelMuse." It is intended to be used as the thumbnail image for a video.

Pruitt Buffalo National River

Marker (3' 10") stands next to ice spike at Apple Creek near Menoken, North Dakota.

A columnar ice spike is observed developing between the ice mounds and weir at Apple Creek. Flow is 20.5 cubic feet per second.

When ice-rich permafrost thaws, former tundra and forest turns into a thermokarst lake as the ground subsides. The carbon stored in the formerly frozen ground is consumed by the microbial community, who release methane gas. When lake ice forms in the winter, methane gas bubbles are trapped in the ice.

USGS sampled water quality at this location on Chickasawhatchee Creek, Terrell County, Georgia.

Hydrologists Carole Johnson and Alton Anderson (USGS) prepare a borehole nuclear magnetic resonance (NMR) tool for logging.

USGS scientists J. Alton Anderson and Dennis W. Risser prepare to collect a full-waveform sonic log from a 1,000-foot deep stratigraphic test hole drilled by the Pennsylvania Geological Survey at the edge of a Marcellus Shale production well pad in Lycoming County, PA.

Tropical Storm Lee 24-hour precipitation map