880 Preliminary flood- control examinations ; a dditi ons-C ontd . Ya zoo R iver proj- ect, modification . 49 Stat . 1509. Provisos . Cost not to exceed authorization . Conditions of local cooperation specified . B a n k protection, etc . Willamette River ; tributaries added . 49 Stat. 1591 . Jo hns to wn, Pa ., flood protection . 49 Stat. 1570. Ante, p. 95. 7,5Tn CONGRESS, 1sT SESSION-CH . 877-AUGUST 28, 1937 "Santa Clara River, California . "Salinas River, California . "Cucamonga Creek, Deer Creek, San Antonio Creek, and Chino Creek, California . "Arroy o Grand e Creek in the county of San Luis O bispo, Cali for nia . "Whitewater River, California . "Alame da and San Lor enzo Cr eeks an d their tribut aries, Cali for nia . "Pajaro River, California . "Russian River, California . "Santa Maria River, Califo rnia . "Ventura River, Ventura County, California . "Willow Creek, Oregon . "Nestucca River and its tributaries, Oregon . "Chetco River and tributaries, Oregon . "Smith River and tributaries, Oregon . "Alsea River and tributaries, Oregon . "Clatskanie River and tributaries, Oregon . "Sandy River and tributaries, Oregon . "Deschutes River and tributaries, Oregon . "Klama th Riv er and tributa ries, O regon . "Malhe ur Riv er and tributa ries, O regon . "Owyhee River and tributaries, Oregon . "Burnt River and tributaries, Oregon . "Powder River and tributaries, Oregon . "Grand e Rond e River and tr ibutari es, Ore gon . "Whatcom Creek at Bellingham, Washington . "North and South Forks of the Skagit River from Mount Vernon to Skagit Bay, Washington . "Lowell Creek, Alaska . "Skagway River in the vicinity of Skagway, Alaska ." SEC. 6. That the Chief of Engineers may, in his discretion, modify the project for the control of floods on the Yazoo River, as author- ized by Public Act Nu mbered 678, ap proved June 1 5, 1936 , to su b- stitute therefor a combined reservoir floodway and levee plan Provided, That the total cost thereof does not exceed the present authorization as estimated in House Committee on Flood Control Document Numbered 1, Seventy-fourth Congress, first session Provided further, That the modified project shall be subject to the following conditions of local cooperation No work shall be undertaken until the States or other qualified agencies have furn ished satisfactor y assurances that they will- (a) undertake, without cost to the United States, all alterations of highways made necessary because of the construction of reservoirs and meet all damages because of such highway alterations ; and (b) furnish, without cost to the United States, all lands and ease- ments necessary to the construction of levees and drainage ditches . SEC. 7. That se ction 5 of the Ac t entitled "An Act authorizing the construction of certain public works on rivers and harbors for flood control, and for other purposes", approved June 22, 1936, is hereby amended by adding the words "and tributaries," after the words "Willamette River," in the paragraph entitled "WULA1utraE Rwaa". SEC . 8 . That the Act entitled "An Act authorizing the construc- tion of certain public works on rivers and harbors for flood control, and for other purposes" approved June 22, 1936, as amended by Act of Congress approved April 27, 1937, is hereby further amended to provide that, if, in the execution of the project for a reservoir system for the protection of Pittsburgh, it is found that geological and engi- neering conditions make it impracti cable to construct a reservoir to
