YAKIMA, Wash. -- The Bureau of Reclamation's forecast is out for the Yakima Basin water supply, and it calls for a full supply for all water rights in the basin based on the Total Water Supply Available. "Precipitation for April through June was 159% of average and demand was also way down due to the cool, wet weather," said Chuck Garner, Yakima Project River Operations Supervisor. "The water supply has experienced a dramatic turnaround over the last three months," he added. Storage in Yakima Basin reservoirs has gone from below average to above average in June and should top out at about 97% of capacity. Both junior and senior water rights holders are expected to receive their full water supply this season. Even those with water rights issued after May 1905 may use basin water throughout the season. The T.W.S.A. forecast is based on flows, precipitation, snow pack and reservoir storage as of July 1, 2010, along with estimates of future precipitation. Other future weather conditions that determine the timing of the run-off and the demand for water are also critical in determining stream flows, pro-rationing and the extent to which the reservoirs fill.