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Gravity survey in the San Luis Valley area, Colorado
J. Robert Gaca, Daniel E. Karig
1965, Open-File Report 66-46
During the summers of 1963 and 1964, a regional gravity survey covering 6,000 square miles of the San Luis Valley and surrounding areas was made to determine subsurface basement configurations and to guide future crustal studies. The San Luis Valley, a large intermontane basin, is a segment of the Rio...
Quality of surface waters in the lower Columbia River Basin
John F. Santos
1965, Water Supply Paper 1784
This report, made during 1959-60, provides reconnaissance data on the quality of waters in the lower Columbia River basin ; information on present and future water problems in the basin; and data that can be employed both in water-use studies and in planning future industrial, municipal, and agricultural expansion within...