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<br /> <br />002511 <br /> <br />CONTENTS <br /> <br />Page <br /> <br />Figure 8, Map showing areal distribution of mean-annual precipitation <br />in the Yampa River basin. , , . . . . . . . , . . . , ,. 21 <br />9. Graph showing comparison of computed sediment yields in the <br />Yampa River basin with estimated sediment yields using <br />the Pacific Southwest Inter-Agency Committee method, .. 24 <br />10. Graph showing comparison of average sediment yields versus <br />mean-annual precipitation for 17 gaging stations in the <br />Yampa River basin with the general relation between sedi- <br />ment yield and mean-annual precipitation for the United <br />States. . . . , . . . . , . . . . . . . . . , . . . . .. 26 <br /> <br />TABLES <br /> <br />Table 1. Summary of daily streamflow and sediment data for selected <br />stream-gaging stations in the Yampa River basin, Colorado <br />and Wyom i ng . . . . . .. .......,.... 5 <br />2. Summary of mean-annual streamflow and computed sediment <br />load at selected stream-gaging stations in the Yampa <br />River bas in, Colorado and Wyom i ng . . . . . . . . . . 12 <br />3. Factors and rating ranges used in the Pacific Southwest <br />Inter-Agency Committee method for estimating sediment <br />yields using terrain characteristics. . . . . . . . . 23 <br />4. Potential sediment yields from surface-mined areas in the <br />Yampa River basin for three estimated levels of coal <br />production by 1990. . . . . . . . . . , . , . . , . . . 29 <br /> <br />METRIC CONVERSIONS <br /> <br />Inch-pound units used in this report may be expressed as metric units by <br />use of the following conversion factors: <br /> <br />MuZtipZy inch-pound unit <br /> <br />inch <br />foot per second <br />acre <br />square mile (mi2) <br />cubic foot per second (ft3/s) <br />ton <br />ton per <br />ton per <br />ton per <br /> <br />year <br />acre <br />squa re <br /> <br />mi le (ton/mi2) <br /> <br />ton per square mile per year <br />[(ton/mi2)/yr] <br /> <br />By <br />25.40 <br />0.3048 <br />0.4047 <br />2.59 <br />0.02832 <br />0.9074 <br />0.9074 <br />2.242 <br />0.3503 <br /> <br />0.3503 <br /> <br />IV <br /> <br />To obtain metric unit <br /> <br />millimeter (mm) <br />meter per second <br />hectare (ha) <br />square kilometer (km2) <br />cubic meter per second (m3/s) <br />metric ton (t) <br />metric ton per year <br />metric ton per hectare (t/ha) <br />metric ton per square <br />kilometer (t/km2) <br />metric ton per square <br />kilometer per year <br />[(tlkm2)/yr] <br />