Abstract |
Collections and field observations to evaluate the biological effects of wastes discharged to the North Platte River by beet sugar factories in the Torrington, Wyoming to Bayard, Nebraska reach, were made in November, 1960, and August-November, 1961. Data acquired in the November, 1960, and August-September, 1961 investigations were presented to the first session of the conference in Scottsbluff, Nebraska, Setember 12, 1961, and enters into this report only as needed to supplement later observations or enhance interpretations. Permissible evaluations of biological damage at this point relate to the fish population and its basic food organisms. |