A DESCRIPTION OF HYDROGEOLOGIC UNITS IN THE PORTLAND BASIN, OREGON AND WASHINGTON; U.S. GEOLOGICAL SURVEY WATER-RESOURCES INVESTIGATIONS REPORT 90-XXX
Portland, OR: United States Geological Survey/USGS/City of Portland Bureau of Water Works, 1990. Soft cover. Softcover with comb binding. A study which maps the extent, thickness, and boundaries of hydrogeologic units (aquifers and confining units) in the basin. 80 numbered pages, 33 numbered altitude tables for selected wells, plus seven..... More