Donald C. Helm 1968 <p><span class="EXLDetailsDisplayVal">Basic <span class="searchword">water</span> data on the <span class="searchword">lower</span> <span class="searchword">Santiam</span> <span class="searchword">River</span> <span class="searchword">basin</span> is preliminary to a comprehensive hydrologic study of this productive and intensely irrigated area where expanding population and industry increases the demand for <span class="searchword">water</span>. Highest yielding <span class="searchword">wells</span> are in shallow alluvial aquifers near the main streams; yields range from several hundred to more than a thousand gpm. <span class="searchword">Wells</span> in lacustrine and older alluvial aquifers that underlie low, flat terraces have yields from a few tens to a few hundred gpm. <span class="searchword">Wells</span> in the Salem Hills and in the Cascade Range foothills yield moderate to small quantities of <span class="searchword">water</span> and tap a variety of geologic units. Tabulated material includes <span class="searchword">records</span> of representative <span class="searchword">wells</span>, drillers' logs, and <span class="searchword">chemical</span> and spectrographic analyses of the ground <span class="searchword">water</span>.</span></p> application/pdf en State of Oregon Records of wells, water levels, and chemical quality of water in the lower Santiam River basin, middle Willamette Valley, Oregon reports