| Abstract: | This report describes the hydrogeologic framework of the groundwater-flow system in the Johns Creek subbasin and vicinity. The study area covers 97 square miles in southeastern Mason County, Washington, and includes the Johns Creek subbasin, which drains an area of about 11 square miles. The study area extends beyond the Johns Creek subbasin to include major hydrologic features that could be used as regional groundwater-flow model boundaries. The subbasin is underlain by a thick sequence of unconsolidated Quaternary glacial and interglacial deposits, which overlie Tertiary igneous and sedimentary bedrock units. Geologic units were grouped into eight hydrogeologic units consisting of aquifers, confining units, undifferentiated deposits, and an underlying bedrock unit. A surficial hydrogeologic map was developed and used with lithologic information from 200 drillers‘ logs to construct 4 hydrogeologic sections, and unit extent and thickness maps. |
| Genre: | USGS Numbered Series |
| ProdID: | 70005545 |
| Citation Author: | Welch, Wendy B.; Savoca, Mark E. |
| Citation Contributing Office: | Washington Water Science Center |
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| Citation Language: | English |
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| Citation LatN: | 0472500 |
| Citation LatS: | 0471000 |
| Citation LonE: | -1225500 |
| Citation LonW: | -1231500 |
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| Citation Phsyical Description: | Report: vi, 16 p.; Plate: 40.00 inches x 34.00 inches |
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| Citation Public Comments: | Prepared in cooperation with the Washington State Department of Ecology |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Scientific Investigations Report |
| Citation Series Code: | SIR |
| Citation Series Number: | 2011-5168 |
| Citation Search Results Text: | Hydrogeologic framework of the Johns Creek subbasin and vicinity, Mason County, Washington; 2011; SIR; 2011-5168; Welch, Wendy B.; Savoca, Mark E. |
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| Citation Year: | 2011 |
| Type: | citation/reference |
| Text: | Hydrogeologic framework of the Johns Creek subbasin and vicinity, Mason County, Washington; 2011; SIR; 2011-5168; Welch, Wendy B.; Savoca, Mark E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/sir_2011_5168.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sir/2011/5168/ |
| Date Other: | Wed, 28 Sep 2011 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
