| GetAccumulatedValue(DateTime, DateTime) | Get accumulated value of the catchment source boundary between the start and end time. The result is set to a negative value for Evaporation and Abstraction boundary types. |
| GetAccumulatedValue(DateTime, DateTime, TimeSpan) | Get accumulated value, and the span for which the values are not delete values. |
| GetAccumulatedValue(Int32, DateTime, DateTime) | Get accumulated value for component at given index at the given time span |