April 9, 2002
David Murillo
509-575-5848 Ext. 213

The April 2002 forecast of water supply based on snowpack and precipitation data available on the first of April indicates a full water supply for all users for the coming irrigation season.

Converting the April - September runoff forecast (natural flow) to total water supply available (TWSA) gives the following volumes for the April through September use period:

With 50% normal subsequent conditions	-3.0 million acre-ft
With 100% normal subsequent conditions	-3.3 million acre-ft
With 150% normal subsequent conditions	-3.6 million acre-ft.

The Title XII target flow at the Yakima River near Parker gaging station is 600 cfs based on the April 1 forecast. Total demand to be placed against this supply for irrigation, regulation and flows passing Sunnyside Dam averages 2.5 million acre-feet per season.

Storage Control is expected to begin sometime in late June or early July. Once the project is on Storage Control, system reservoir volume will decline as water is released to meet demands.

Storage Conditions as of April 1 were as follows:

Reservoir	Content (acre-feet)	Total Capacity	Percent of Capacity
Keechelus	97,790	140,300	70
Kachess	114,336	239,000	49
Cle Elum	198,984	436,000	46
Bumping	15,383	33,700	46
Rimrock	116,845	198,000	59
Totals	543,338	1,047,9001	52

1Keechelus capacity is currently restricted to 140,397 acre-feet. Normal capacity is 157,800 acre-feet.
2Reservoir is currently 508,414 as of April 7, 2001, 48% capacity, 62% of average.