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<br />.. <br /> <br />CONTENTS <br /> <br />Page <br /> <br />Abstract----.---------------------------------------------------.--------- 1 <br />Introduction-------------------------------------------------------------- 1 <br />Hydrology of the Yampa basin---------------------------------------------- 4 <br />Streamflow of the Yampa River at Deerlodge Park--------------------------- 6 <br />Sediment transport at Deerlodge Park-------------------------------------- 11 <br />Annual sediment loads-----------------------------------------'------------ 18 <br />Estimated impacts of water resource development--------------------------- 21 <br />Sediment budget at Deerlodge Park----------------------------------------- 24 <br />Summary and conclusions--------------------------------------------------- 3D <br />References..--------------------------------------------------------------- 32 <br />Supplemental data--------------------------------------------------------- 35 <br /> <br />Figure 1. <br /> 2. <br /> 3. <br /> 4. <br /> 5. <br /> 6. <br /> 7. <br /> <br />ILLUSTRATIONS <br /> <br />Page <br /> <br />Map of Yampa River basin east of Dinosaur National <br />Monument showing location of stream gages------------------- 3 <br />Hydrographs of mean. daily discharges for: A. Station <br />09251000 Yampa River near Maybell; and B. station <br />09260000 Little Snake River near Lily---------------------- 5 <br />Map showing principal study sites----------------------------- 7 <br />Channel cross section showing magnitude of scour and <br />fill of bed material---------------------------------------- 8 <br />Hydrograph of mean daily discharges for station 09260050 <br />Yampa River at Deerlodge Park------------------------------- 10 <br />Estimated flow-duration curve for station 09260050 Yampa <br />River at Deerlodge Park for period 1941-1983---------------- 12 <br />Cumulative sediment load versus discharge relation, showing <br />the percentage of annual total sediment load transported <br />by flows less than or equal to a given discharge, station <br />09260050 Yampa River at Deerlodge Park--------------------- 22 <br />8. Graph showing flow-duration curves of natural streamflow at <br />Oeerlodge Park, and assumed altered streamflow-------------- 25 <br />9. Graph of flow-duration curves and annual streamflow totals <br />used in the sediment budget--------------------------------- 27 <br /> <br />TABLES <br /> <br />Page <br /> <br />Table 1. Hydraulic geometry relations at station 09260050 Yampa River <br />at Deerlodge Park--------------------------------------------- 9 <br />2. Particle size statistics for sediment in the Oeerlodge Park <br />study reach--------------------------------------------------- 14 <br />3. Sediment-transport equations derived from sediment discharges <br />measured at station 09260050 Yampa River at Deerlodge Park--- 16 <br />4. Sediment-transport equations derived from sediment discharges <br />estimated with the Modified Einstein procedure at station <br />09260050 Yampa River at Deerlodge Park----------------------- 19 <br /> <br />i i i <br />