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2282 bank which infrequently receives water rights which would otherwise not be used and publicizes notice of availability and leases all or part of rights to other users. There are criteria against which the Director is required to review a proposal. These are patterned after state water right transfer provisions and include: Will the proposed use reduce the quantity of water available under other existing water rights, is the water supply sufficient for the purpose for which it is sought, would the lease cause the use of water to be axpanded beyond that authorized under the water right, or will it conflict with the local public interest? Our experience with this water bank is that it is little used. This is probably for the reason that most find it convenient to transfer water rights to other users and uses directly and permanentlY. There are currently three water rights in the bank. Two are for diversion of 15.71 cfs of water and 4861 AF directly from the Snake River and the other is a small ground water right. 1350 AF of these rights was rented and used in 1990, 750 AF in 1991 and 1148 AF this year. It seems rather strange that more of this water was not asked in this drought year when we were directing the cessation of diversions from the Snake River with late priority dates to protect the established instream flow. There are now three other divisions of the state water bank and these are the most active at the present time. These are the local rental pools for storage water which are operated under the Board's authority by committees within organized water districts. Such districts are organized by the Department to facilitate the regulation of distribution of water among water users in accordance with existing rights. PresentlY local rental pools handle water bank rentals in the upper Snake River basin (District 01), Boise River basin (District 63) and Payette River basin (District 65). We also have the equivalent of an informal, storage entity operated a rental pool in the Bear River basin. The Snake River pool has been the most active. It is within this area of the state that rental of storage water has occurred since the 1930's. The pool has taken in as little as 4,000 af in a drought year like 1992 to as much as 895,000 af of water in a year of surplus like 1986. Rentals from the bank have totalled as much as 360,000 af in a year. Most of the water has been used for hydroelectric power generation. In dry years there is a trend toward more rentals for supplemental irrigation and less for power. In more recent years, the leases for power have had an additional purpose of flow enhancement for anadromous salmon in the lower Snake and Columbia Rivers. This rental pool operates on reservoir water stored mostly in federal reservoirs with total capacity of about 4 MAF.