Water: WARSSS
Degradation Potential
Prediction Level
Assessment
Steps
Hydrologic Relations1. USGS Regional Curves
2. Drainage Arearat
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
This step integrates portions of the information summarized in Worksheet 14 (PDF version, 43 kb, 1 p., or Excel spreadsheet) that includes entrenchment ratio. The degree of channel incision based on bank height ratio (Figure 110 , PDF, 10 kb, 1 p., and Figure 111, PDF, 10 kb, 1 p.) is also used for this interpretation. Computations summarized in Step 22 and sediment competence (Worksheet 28, PDF, 11 kb, 1 p.) are key analyses to the final potential degradation (vertical containment) rating. Departure from reference condition is documented at this step for this process.
Use Worksheet 29a (PDF, 32 kb, 1 p.) to determine a final potential degradation (vertical containment) rating for impaired and reference reaches.
