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Oregon Water Science Center

Columbia River Basalt Stratigraphy in Oregon

In Cooperation with the Oregon Water Resources Department (OWRD)

Table of Geologic Units for Site WASH 315

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USGS Site ID: Site identification number permanently assigned to the well by the U.S. Geological Survey and recorded in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Sequence Number: Sequence number assigned to identify a record.

Depth to Top of Interval: The depth to the top of this unit, in feet below land surface.

Depth to Bottom of Interval: The depth to the bottom of this unit, in feet below land surface. This field should be specified for all units, except the last one in the hole.

Unit code: The name of aquifer or geologic unit stored by the U.S. Geological Survey in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Lithology code: The principal lithology of this unit stored by the U.S. Geological Survey in National Water Information System (NWIS), a national computer database maintained by U.S. Geological Survey.

Description of material: The adjective modifier to describe the rock type.

--, no data/unknown.

USGS Site ID Well Log ID Sequence Number Depth to Top of Interval Depth to Bottom of Interval Unit code Lithology code Description of material
452224122542001 WASH 315 1 0 25 COLUMBIA BASALT GROUP Soil --
452224122542001 WASH 315 2 25 35 COLUMBIA BASALT GROUP Clay --
452224122542001 WASH 315 3 35 140 BASALT OF GINKGO OF FRENCHMAN SPRINGS MEMBER OF WANAPUM BASALT Basalt --
452224122542001 WASH 315 4 140 182 SENTINEL BLUFFS UNIT OF GRANDE RONDE BASALT Basalt --
452224122542001 WASH 315 5 182 210 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452224122542001 WASH 315 6 210 320 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452224122542001 WASH 315 7 320 375 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
452224122542001 WASH 315 8 375 465 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452224122542001 WASH 315 9 465 540 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 2, GROUSE CREEK ?
452224122542001 WASH 315 10 540 542 ELLENSBURG FORMATION Sedimntry(undf) --
452224122542001 WASH 315 11 542 570 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt --
452224122542001 WASH 315 12 570 910 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
452224122542001 WASH 315 13 910 960 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
452224122542001 WASH 315 14 960 -- GRANDE RONDE BASALT OF YAKIMA Basalt --
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Page Last Modified: Wednesday, 09-Jan-2013 18:51:18 EST