Report 66 by Jack Rawson, D.R. Reddy, and R.E. Smith, U.S. Geological Survey, November 1967

• Report 66 - Low-Flow Studies, Sabine and Old Rivers Near Orange, Texas, Quantity and Quality, April 12, October 31 - November 4, 1966 (pdf - 3.61MB)
• Figure 4 (pdf - 1.92MB) - Flow Analysis Diagrams Showing Distribution of Flow between the Old and Sabine Rivers
• Figure 6 (pdf - 2.69MB) - Variations of Dissolved Solids, Chloride, and Dissolved Oxygen at the Three Sites Upstream from the Advance of Sea-water
• Figure 7 (pdf - 0.43MB) - Variations of Dissolved Solids, Chloride, and Dissolved Oxygen at the Three Sites in the Sea-water Affected Reaches