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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 MULT FALLS

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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
453418122064901 MULT FALLS 1 0 103 BORING LAVA Basalt --
453418122064901 MULT FALLS 2 103 173 COLLUVIUM Soil COVERED
453418122064901 MULT FALLS 3 173 313 TROUTDALE FORMATION Sandstone --
453418122064901 MULT FALLS 4 313 363 COLLUVIUM Soil COVERED
453418122064901 MULT FALLS 5 363 416 TROUTDALE FORMATION Sandstone --
453418122064901 MULT FALLS 6 416 520 WINTER WATER UNIT OF GRANDE RONDE BASALT Basalt --
453418122064901 MULT FALLS 7 520 653 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
453418122064901 MULT FALLS 8 653 730 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
453418122064901 MULT FALLS 9 730 743 ELLENSBURG FORMATION Claystone --
453418122064901 MULT FALLS 10 743 849 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
453418122064901 MULT FALLS 11 849 1083 ORTLEY UNIT OF GRANDE RONDE BASALT Basalt FLOW 4
453418122064901 MULT FALLS 12 1083 1233 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
453418122064901 MULT FALLS 13 1233 1273 GROUSE CREEK UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
453418122064901 MULT FALLS 14 1273 1396 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 1
453418122064901 MULT FALLS 15 1396 1532 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 2
453418122064901 MULT FALLS 16 1532 1533 ELLENSBURG FORMATION Claystone --
453418122064901 MULT FALLS 17 1533 1598 WAPSHILLA RIDGE UNIT OF GRANDE RONDE BASALT Basalt FLOW 3
453418122064901 MULT FALLS 18 1598 1632 DOWNEY GULCH UNIT OF GRANDE RONDE BASALT Basalt --
453418122064901 MULT FALLS 19 1632 -- COLLUVIUM Soil COVERED
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Page Last Modified: Wednesday, 09-Jan-2013 18:46:48 EST