Run time performance was improved for models using the water rights solver and Allow Negative Flows on passthrough accounts. In a 100 year daily timestep test model, the run time decreased by 57%. Additional run time performance improvements were made to accounting and the water rights solver to further decrease run times.

The new Empty Storage, E flag, set on an Outflow supply slot, will compute the value necessary to empty the Storage account of all its water (i.e. Storage will be zero). The new flag may be cleared interactively with the Clear Values operation, or overridden by setting its value with a rule.

See Using the Empty Storage Flag in Accounting for more information.