Historical dam count data for Prosser and Roza Dams have now been loaded to the University of Washington Data Access in Real-Time (DART) system. Historical daily counts for Roza Dam for the years 1940-1967 and 1982-1985 were obtained and loaded from data provided courtesy of the U.S. Bureau of Reclamation’s Yakima office. In years where daily counts are not available, the Yakama Nation has provided weekly counts with data assigned to an arbitrary day in the week for which counts are available. This is the case for Prosser Dam for the years 1984 to 1991 and for Roza Dam for the years 1986 to 1990.

Daily or weekly count data are now available on DART for Roza Dam for the years 1940 to 1967 and 1982-present and for Prosser Dam for the years 1983 to present.

As you use and review these data, please let us know of any errors or discrepancies you find in the data posted to DART. Also, if you are aware of additional data for Prosser and/or Roza Dams that you feel should be loaded to DART, by all means please forward your contribution to us.

Thank You.

Bill Bosch
YKFP Data Manager