CONTENTS
LETTER OF TRANSMITTAL 4 THE CONSERVATION MOVEMENT 5 Origin of the Movement State Co-operation 7 WATER TRANSPORTATION 11 Oregon’s Waterways 13 Navigable Mileage of the Columbia River and Tributaries 16 Columbia River Snake River 16 Willamette River and Tributaries I B Other Tributaries of Columbia River i a Harbors 11 mprovemenI or Waterways and Harbors 17 Improvement of the Columbia ‘9 Mouth of he River 19 Below Mouth oF the Willamette 23 Bctwf€n Mouth of Willaitiette and Vancouv€r 23 Cascade Locks and Canal 25 Celilo Locks and Canal 20 Above Cello on Columbia atid Snake Thycis 27 WiI!an,ette River 20 CoosBay So TilIan’ook Bay so Other Coast Harbors and Streams SI State and Municipal Co—operation Appropriat{ons Iade by the State oF Oregon 32 Port of Portland 32 Port of Tillamook Portof Coos Bay Port of Astoria 34 Recent Voluntary Coatrib’jtions 31 WATER RESOURCES THEIR CONSER’ATTON A?ID USE. 37 LaclcofPhysicalData 39 Stale Cc,-opention Coordinated Uses 44 TheWillanietteValjeyProblem Irrigation 46 Navigation 50 Water Power 52 Physical Data 5.3 Climate Stream Flow 54 Table I—Precipita’iort and Frost Stat stic 55 Table I I—Temperature Siatistic Table I IT—Discharge of Orcg”n Strc.rn c IS Waler Power Co gTe
