Mid-Month Water Supply Outlook Update – East Side Sierra Nevada Basins
California-Nevada River Forecast Center
Issued Friday, April 11, 2008

Forecasts are based on preliminary data and are 
  coordinated with the NRCS, Portland, OR.

* DATA CURRENT AS OF: 4/11/08 14:00:00

                               APRIL 11, 2008


LAKE TAHOE BASIN                                                                
                                            50%  % of  max  30%  70%  min 30-yr
Forecast Point                     period  (KAF)  avg  (%)  (%)  (%)  (%)  avg
--------------                     ------ ------ ---- ---- ---- ---- ---- -----

LAKE TAHOE Rise (Gates Closed) (1) APR-HIGH 1.05   76  118   89   63   34  1.38
                                   MAY-HIGH 0.75   69  123   86   53   16  1.08

TRUCKEE RIVER BASIN                                                             
                                            50%  % of  max  30%  70%  min 30-yr
Forecast Point                     period  (KAF)  avg  (%)  (%)  (%)  (%)  avg
--------------                     ------ ------ ---- ---- ---- ---- ---- -----

L TRUCKEE R abv Boca Reservoir     APR-JUL  60.0   75   98   84   67   57  80.0
                                   MAY-JUL  44.0   70   93   78   62   52  63.0
TRUCKEE R nr Farad, Ca             APR-JUL   200   77  103   87   67   51   260
                                   MAY-JUL   145   75  114   91   60   36   193

CARSON RIVER BASIN                                                              
                                            50%  % of  max  30%  70%  min 30-yr
Forecast Point                     period  (KAF)  avg  (%)  (%)  (%)  (%)  avg
--------------                     ------ ------ ---- ---- ---- ---- ---- -----

EF Carson R near Gardenerville, NV APR-JUL   152   80  100   88   72   61   189
                                   MAY-JUL   122   79  107   90   67   50   155
WF CARSON R nr Woodfords, CA       APR-JUL  42.0   75   94   83   67   56  56.0
                                   MAY-JUL  32.0   73  105   86   60   40  44.0
CARSON R nr Carson City, NV        APR-JUL   130   69   88   76   62   53   188
                                   MAY-JUL   105   69   91   78   61   50   152
CARSON R at Fort Churchill, NV     APR-JUL   115   65   87   74   56   43   178
                                   MAY-JUL    92   63   88   74   53   39   145

WALKER RIVER BASIN                                                              
                                            50%  % of  max  30%  70%  min 30-yr
Forecast Point                     period  (KAF)  avg  (%)  (%)  (%)  (%)  avg
--------------                     ------ ------ ---- ---- ---- ---- ---- -----

E WALKER R nr Bridgeport, Ca.      APR-AUG  56.0   84   84   84   84   84  67.0
                                   MAY-AUG  48.0   81  123   98   64   40  59.0
W WALKER R blw L Walker nr ColevillAPR-JUL   128   82  103   90   74   62   156
                                   MAY-JUL   113   82  109   93   71   55   138


 Max is 90 percentile and min is 10 percentile except with footnote 1 below.
 Averages are for the 1971-2000 period.
 All volumes are in KAF.

 footnotes:
 1) max is 95 percentile and min is 5 percentile