Water: WARSSS
Science & TechnologyApplications & DatabasesTechnical ToolsWARSSSRef Dimensionless Sediment, Bedload Rating CurvesRef Dimensionless Sediment, Bedload Rating Curves
Prediction Level
Assessment
Steps
Hydrologic Relations1. USGS Regional Curves
2. Drainage Area
3. Field Calibration
4. Final Determination
Stream Morphology
5. Stream Classification
6. Dimensionless Ratios
Stability Analysis
7. Channel Stability
8. Bank Erosion Prediction
9. Bank Erosion Rates
Flow/Sediment Relations
Sediment Rating Curves
10. Flow Modifications
11. Dimensionless Flow
12. Bankfull Q & Sediment
13. Dimensionless SRCs
14. Bedload Rating
15. Flow Duration Curves
16. Flow-Related Yield
17. Flow-Related Increases
Supply Changes
18. Channel Changes
19. Bedload Transport
20. Hillslope Processes
21. Hillslope Sediment
22. Entrainment Calculation
Stability Consequences
23. Sed. Transport Changes
24. Aggradation Potential
25. Degradation
26. Enlargement
Summary Analysis
27. State Shift
28. Total Sediment
29. Departure Analysis
30. ID Loads by Category
These curves should be developed for stable reference reach sites representing stable streams. A similar relation can be stratified for "poor" stability or unstable streams. These reference curves are needed in order to establish sediment rating curves for the calculation of flow-related sediment increases and to establish an annual sediment yield estimate for proportioning various contributing sediment sources. Examples of dimensionless suspended and bedload rating curves are shown in Figures 56 and 57 and discussed in the Dimensionless SRCs reference section.
Figure 56. Dimensionless suspended sediment rating curves for "Good/Fair" streams/stability- Pagosa Springs, Colorado.
Figure 57. Dimensionless bedload sediment rating curves for "Good/Fair" streams/stability-Pagosa Springs, Colorado.