• A row is created in a table on a data object. The row is labeled with the name of the exchange and the various columns in the table represent exchange characteristics.

• Series slots may be created on the data object to keep track of the amount of water exchanged. The slots are named <exchange name>Borrow and <exchange name>Payback.

• Borrow and payback supplies are created between desired accounts to create paths over which the exchange water moves. Optionally, the borrow supplies can be given a Destination Type of “Borrow” and the payback supplies can be given the Destination Type of “Payback”. Both borrow and payback supplies can be given a Release Type that is the name of the exchange.

• The Water Type of the source accounts for payback supplies may be given a type describing the exchange purpose.