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Ecology Publications & Forms |
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Ecology Publications & Forms |
| Title | A Brief Description of the Ground-Water Resources of Pacific and Wahkiakum Counties, Washington |
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A Brief Description of the Ground-Water Resources of Pacific and Wahkiakum Counties, Washington (Number of pages: 29) (Publication Size: 557KB)
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| Author(s) | Denzel Cline | ||||
| Description | Pacific and Wahkiakum Counties, in southwestern Washington, have an area of about 1,200 square miles. This semi-mountainous area is bordered by the Pacific Ocean. The area has a marine climate with precipitation averages ranging from 70 to over 120 inches per year, most of which occurs in winter. For purposes of this study, rocks in the area are divided into three unconsolidated Quaternary units and two Tertiary bedrock units. Alluvium, consisting of peat, clay, silt, sand and gravel, occurs mainly in the lower parts of valleys, where it is relatively thin, and in a narrow strip near the beach north of Willapa Bay, where it may exceed 200 feet in thickness. The alluvium in the valleys generally yields only small amounts of water, but yields may vary from none to a few hundred gallons per minute. Irrigation pits in alluvium along the coast north of Willapa Bay yield from 100 to 500 gpm. |
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The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.
ADA Accessibility The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188. Visit Ecology’s website for more information. |
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| Contact | Water Resources Program at 360-407-6872 | ||||
| Keywords | water resource, water resources, ground water | ||||
| WEB PAGE | Water Resources Program | ||||
| WATERSHED | Water Resource Inventory Area 24 Willapa |
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