Report 107 by V.L. Spiers and H.R. Hejl, Jr., U.S. Geological Survey | January 1970

• Report 107 - Quantity and Quality of Low Flow in the Pecos River Below Girvin, Texas, February 6-9, 1968
• figure 2 - Geologic Map Showing Discharge Measurement Sites, Water Discharge, and Chemical Quality of the Water, February 6-9, 1968