Runoff vs Slope
Some real data on Slope Vs Runoff (source: Runoff and Soil Loss Under a Center Pivot)
![Image: https://optisurface.uservoice.com/assets/123905350/Figure1.png](https://optisurface.uservoice.com/assets/123905350/Figure1.png)
Also see Table 2–8 in Irrigation Guide
![Image: https://optisurface.uservoice.com/assets/123905446/Table_2-8.png](https://optisurface.uservoice.com/assets/123905446/Table_2-8.png)
Also see Table 2 in Center Pivot Management For Forage Production
![Image: https://optisurface.uservoice.com/assets/123905479/Table2.png](https://optisurface.uservoice.com/assets/123905479/Table2.png)
If we assume those numbers correlate to infiltration then slope decreases effective infiltration by around 300%
![Image: https://optisurface.uservoice.com/assets/123905533/Table3.png](https://optisurface.uservoice.com/assets/123905533/Table3.png)
Its conceptually & nicely increases surface storage (table 3) based on slope and residue cover which i think is missing in a lot of models.