USGS Data Series 1090: Hydrogeologic Framework for Characterization and Occurrence of Confined and Unconfined Aquifers in Quaternary Sediments in the Glaciated Conterminous United States

Select radio button to display desired data overlay. Use slider to control base map opacity.
For best results use Google Chrome.

EXPLANATION

Elevation, in meters,
datum is NAVD 88

>900 to 1,916

>700 to 900

>550 to 700

>450 to 550

>400 to 450

>300 to 400

>250 to 300

>150 to 250

>50 to 150

0 to 50

Hydrogeologic terrane boundaries—Alphanumeric code indicates the generalized complexity of the hydrogeologic framework in each terrane

Sediment thickness contrast

Major river

Maximum extent of glacial ice

Extent of Late Wisconsinan ice

Valley Heads Moraine

Physiographic boundary

Appalachian Plateau

New England Upland

Figure 10A. Terranes 1A and 4A in the northeastern glaciated conterminous United States.

U.S. Department of the Interior | U.S. Geological Survey
URL: http://pubsdata.usgs.gov/pubs/ds/1090/ds1090_fig10a.html
Page Contact Information: GS Pubs Web Contact
Page Last Modified: Monday, 26-Nov-2018 14:09:30 EST