U.S.
GEOLOGICAL SURVEY
Water-Resources Investigations Report 02-4214
Hydrologic
Conditions in the Bill Williams River National Wildlife Refuge and Planet Valley,
Arizona, 2000
View full report in PDF (5.31 MB)
Prepared in cooperation with theBy R.P. Wilson and S.J. Owen-Joyce
During a period of sustained base-flow conditions in the Bill Williams River
below Alamo Dam in west central Arizona from March to July 2000, the channel
of the river through Planet Valley was dry, and the water table sloped almost
due west parallel to the main slope of the flood plain. Water from the river
infiltrated into the channel bottom at the head of Planet Valley, moved downgradient
in the subsurface, and reappeared in the channel about 0.3 mile downstream from
the east boundary of the Bill Williams River National Wildlife Refuge. A river
aquifer in hydraulic connection with the Bill Williams River was mapped from
a point 6.3 miles upstream from Highway 95 to the upstream end of Planet Valley.
Formations that make up the river aquifer in Planet Valley are younger alluvium,
older alluviums, and fanglomerate. Total thickness of the river aquifer probably
is less than 200 feet in the bedrock canyons to as much as 1,035 feet in Planet
Valley. The purpose of this study was to investigate the current hydrologic
conditions along the Bill Williams River, which included an inventory of wells
within the river aquifer of the Colorado River and in Planet Valley, and to
determine the configuration of the water table. A map shows the elevation and
configuration of the water table from the east end of Planet Valley to the confluence
of the Bill Williams River with Lake Havasu.
Abstract
Introduction
Hydrology
Summary
Selected references
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