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<br />ARKANSAS RIVER FROM JOHN MARTIN DAM TO <br />THE COLORADO-KANSAS STATE LINE: <br />CHANNEL CAPACITY AND RIPARIAN HABITAT PLANNING STUDY <br /> <br />TABLE OF CONTENTS <br /> <br />Topic <br /> <br />Page <br /> <br />SUMMARY OF FINDINGS AND RECOMMENDATIONS. . . . . . . . . . . . . . . . . . . . . i <br /> <br />1. INTRODUCTION ................................................... 1 <br />1.1 STUDY AUTHORITY ........................................... 1 <br />1.2 STUDY PURPOSE .............................................. 1 <br />1.3 STUDY REACH AND TYPICAL PROBLEM AREAS ................. I <br /> <br />2. GENERAL BACKGROUND AND SETTING . . . . . . . .. . . . . . . . . . . . . . . . . . . . 2 <br />2.1 JOHN MARTIN RESERVOIR PROJECT ............................ 2 <br /> <br />2.2 CLIMATE...................................................... 10 <br />2.3 PHYSIOLOGY, GEOLOGY, AND SOILS. . . .. . . . . . . .. . . . . . . . . . . .. . .. 10 <br />2.4 WATER QUALITY. . .. . .. . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . .. 10 <br /> <br />3. HYDROLOGIC AND ECOLOGIC INVESTIGATIONS. . . . . . . . . . .... . . . .. 12 <br />3.1 GEOMORPHOLOGICAL ASSESSMENT. . . . . . . . . . . . . . . . . . . . . . . . . . .. 12 <br />3.2 HYDRAULICS AND SEDIMENTATION. . . . . . . . . . . . . . . . . . . . .., . . . .. 12 <br />Historic Hydrology ............................................. 12 <br />Historic Sediment Information .................................... 14 <br />Hydraulic Modeling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16 <br />Sediment Modeling ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 18 <br />Problem Areas - Existing Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19 <br />Hydraulic and Sediment Summary ................................. 23 <br />Groundwater/Surface Water Interaction. . . . . . . . . . . . . . . . . . . .. . . . . . . .. 24 <br />3.3 ECOLOGICAL RESOURCES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 25 <br /> <br />Aquatic System ................................................ 26 <br /> <br />Riparian System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 26 <br />Functions of Riparian Vegetation. . . . . . . . . . . . . . . . . . . . . . . . ... . " . . .. 28 <br /> <br />Riparian Fauna. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 30 <br /> <br />4. ALTERNATIVES ................................................... 31 <br />4.1 CHANNEL IMPROVEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 31 <br />4.2 LIMITED CHANNEL IMPROVEMENT .. . . . . . . . . . . . . . . . . . . . . . . . . . .. 36 <br />4.3 FLOODW A Y IMPROVEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ . . .. 36 <br />Structural Alternative: Berm Rehabilitation ......................... 37 <br />Non-structural Alternative: Conservation and Restoration .............. 39 <br />Local Education, Coordination, and Planning. . . . . . . . . . . . . . . . . . . . . . . .. 40 <br /> <br />v <br />