public interface ISlot| GetAdditionalSurfaceArea | Returns the additional storage area of the slot given the water level. |
| GetFlowArea | Returns the flow area of the slot given the water level. |
| GetFlowAreaDerivative | Returns the flow area of the slot given the water level. |
| GetRadius | Returns the hydraulic radius for the given water level. |
| GetRadiusDerivative | Get the derivate of the hydraulic radius at the given water level. |
| GetResistanceFactor | Resistance factor for the given water level. This will always return absolute resistance values. |
| GetResistanceFactorDerivative | Get the derivative of the resistance factor at the given water level |
| GetStorageWidth | Returns the width of the slot given the water level. |
| Validate | Validate the object |