Pollution of navigable waters. Hearings before the Committee on Rivers and Harbors, House of Representatives, Seventy-fourth Congress, second session, on H.R. 12101, a bill granting to the states of the Ohio valley consent of Congress to an interstate compact or treaty for the purpose of controlling or reducing stream pollution; H.R. 12102, a bill to provide for the preparation of a plan to reduce the pollution of navigable waters and for the appropriation of money for that purpose; H.R. 12103, a bill to provide for the preparation of a plan to reduce the pollution of navigable water of the United States; H.R. 12764, a bill to create a division of stream pollution control in the Bureau of the Public Health Service, and for other purposes. May 20 1936.