Table 7. — Columbia River at Bonneville 



Average monthly water temperatures °F., 19Ult-1955. 



Data from U. S. Corps of Engineers and U. S. Fish and Wildlife Service 



ATg. 38.U 39.U U3.7 U9.7 5U.2 58.U 61i.5- 67.3 6U.0 58.0 U8.2 U2.2 



U6 



