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TABLE OF CONTENTS (Continued) Section Tab 1 e No. Description Reach 6 Cherry Creek to Franklin. Reach 7 Frankl in to Sand Creek. . Reach 8 Sand Creek to Baseline Road (Brighton) . . . Intangible Benefits and Costs . . Page xv XV.4 XV-4 XV-4 XV-5 1.1 II I-I I II-2 111-3 II 1-4 111-5 111-6 III.7 V-I XVI RECOMMENDED PLAN Reach 1 - Chatfield to Columbine Engineering and Recreation Alternatives Reach 2 - Columbine to Oxford Engineering and Recreation Alternatives Reach 3 . Oxford to Bates Engineering and Recreation Alternatives Reach 4 - Bates to Colfax Engineering and Recreation Alternatives Reach 5 ' Colfax to Cherry Creek Engineering and Recreation Alternatives Reach 6 - Cherry Creek to Franklin Engineering and Recreation Alternatives Reach 7 - Franklin to Sand Creek Engineering and Recreation Alternatives Reach 8 . Sand Creek to Basel i ne Ro ad Engineering and Recreation Alternatives Implementation. . . . . . . . . . . . . . VI.4 VI.5 VI-6 VI-7 XVI.l XVI-l XVI-l V-2 VI-l XVI.2 XVI-2 XVI.3 XVI-3 XVI-4 XVI-4 VI-2 VI-3 XVII RIVER MANAGEMENT Introduction, . . . . . . . . . . . . . Existing River Operation and Management Floodplain Management River Flow Management. . . . . Flood Flow Management . . . . . Water Rights. . . . . . . . . . Boating Safety and Regulations. Channel Capacity Maintenance. . Access Trail and River Bank Maintenance Protection of Bridges, Dams and Utility Crossings, . , . . Gravel Pit Hazards. Trail Ranger System . Recreation. . . . . . Water Quality. . . . Management Alternatives . . Existing River Management Constituent Management Agencies Independent Management Agencies Recommendations . . . . . . . . . VI 1.1 VII.2 XVII.1 XVI 1-1 XVII.2 X VII-2 XVII-2 XVII.2 XVII-2 XVII-2 XVII-3 XVII-3 X VII-3 XVII-3 X VII.3 XVII-3 XVII.3 XVII -3 XVII.4 XVII-4 X VII-4 VI-8 VI.9 VI.I0 VI-ll LIST OF TABLES Description Study Reaches. . . Climatological Data Comparisons. . Flood Control Reservoir Parameters Rainfall Temporal Distribution. . Tributary Basin Peak Inflow, . . . South Platte River Flood Hydrology South Platte River low Flow Hydrology (Average Year) . . . . . . . . . . . South Platte River low Flow Hydrology Flows (Dry Year) . . . . . . . . . . . . . . . . Physical Characteristics of the "Tri.lakes" Reservoirs . . . . . . . . . . . . . . . . Agency Controls for the Tri.lakes Reservoirs Stream Classifications and Water Quality Standards. , . . . . . . . . . . . Biological Survey Sampling locations and Data Collected on November 17, 1981, in the South Platte River . . . . . . . . . . . . . Fish Species as a Percentage of Total Sample at Each Sampling location. . . . . , . . . . Constituents of Urban Runoff Analyzed in Samp 1 es. . . . . . , . . . . . , , . . . . . Decriptions of Urban Runoff Monitoring Basins. . Average Event Mean Concentrations in (EMC) MG/liter of Constituents Monitored at Urban Basins. . . Average Concentrations (MG/l) of Selected Pollu- tants in Effluent From MDSDD#1 . . . . . . . Ambient Streamflow Concentrations Monitored Between April 1980 and September 1981 at the South Platte River at 50th Avenue. . . . . Storm Runoff Event Mean Concentrations Monitored Between April 1980 and September 1981 at the South Platte River at 50th Avenue. Percent Exceedance of Water-Quality Standards for Ambient and Storm Event Mean Concentra- tions for April 1980 Through September 1981 at South Platte River at 50th Avenue. , Estimated Point Source, Baseflow and Storm Runoff loads for April 1980 Through September 1981 for the South Platte River at 50th Avenue . . , . . , . . . . . . . . South Platte River Valley Aggregate Quantities Adams County Gravel Mining Inventory. . . . . Page 1.2 111-2 I I 1-2 II 1-3 II 1-4 111-4 111.5 I 11-5 V-I V-2 VI-I0 VI -11 VI-11 VI -12 VI -12 VI -13 VI -13 VI-I4 VI-14 VI-15 VI-I5 VII.6 VII-8