MONTHLY WATER SUPPLY OUTLOOK
NOAA NATIONAL WEATHER SERVICE
CALIFORNIA NEVADA RIVER FORECAST CENTER
630 AM PDT WED MAY 07 2008

                                  May 1 2008 

COASTAL BASINS

                                  Period      MP   MP%   RMAX   RMIN    AVG
                                  ------    ----   ---   ----   ----    ---
Williamson River
  Sprague, blo                    May-Sep    260    97    320    200    267
Sprague River
  Chiloquin, nr                   May-Sep    145    94    192     98    155
Upper Klamath Falls River
  Inflow                          May-Sep    330    97    425    235    340
Lost River
  Gerber Reservoir Inflow         May-Jul    6.1    95   16.2   0.50    6.4
  Clear Lake Reservoir Inflow     May-Jul   19.0    98     36    2.4   19.3
Scott River
  Fort Jones, nr                  Apr-Jul    160    88    200    130    181
Trinity River
  Trinity Lake Inflow             Apr-Jul    570    90    700    460    635

SACRAMENTO RIVER ABOVE BEND BRIDGE

Pit River
  Montgomery Ck, nr               Apr-Jul    750    70    970    620   1070
Mccloud River
  Shasta Lk, abv                  Apr-Jul    305    82    380    250    370
Sacramento River
  Delta                           Apr-Jul    200    69    260    165    290
  Shasta Dam                      Apr-Jul   1260    70   1600   1040   1790
  Bend Bridge, abv, Red Bluff, n  Apr-Jul   1680    69   2150   1390   2440

FEATHER RIVER ABOVE OROVILLE RESERVOIR

NF Feather River
  Prattville, nr                  Apr-Jul    210    63    280    165    333*
  Big Bar                         Apr-Jul    585    61    790    450    962*
Feather River
  Oroville                        Apr-Jul   1060    60   1440    840   1760

YUBA RIVER ABOVE SMARTVILLE

North Yuba River
  Goodyears Bar, blo              Apr-Jul    170    62    225    135    273*
South Yuba River
  Langs Crossing                  Apr-Jul    145    64    190    115    225*
Yuba River
  Smartville, nr                  Apr-Jul    645    65    830    510    995

AMERICAN RIVER ABOVE FOLSOM RESERVOIR

MF American River
  Auburn, nr                      Apr-Jul    310    63    410    255    490*
Silver Ck
  Union Valley                    Apr-Jul     57    58     76     46     98*
  Camino Dam, blo                 Apr-Jul     94    59    125     77    158*
American River
  Folsom Reservoir Inflow         Apr-Jul    735    60    970    600   1230

SAN JOAQUIN BASIN

SF San Joaquin River
  Hooper Ck, blo, Florence Lk, n  Apr-Jul    150    78    205     95    192*
San Joaquin River
  Millerton Lk                    Apr-Jul    930    73   1080    780   1270
Merced River
  Pohono Bridge, at, Yosemite, n  Apr-Jul    280    78    325    235    360*
  Merced Falls, blo               Apr-Jul    420    65    500    340    645
Tuolumne River
  Hetch Hetchy, nr                Apr-Jul    460    77    530    405    596*
  La Grange, nr                   Apr-Jul    850    69   1000    750   1230
MF Stanislaus River
  Beardsley Dam, blo              Apr-Jul    220    69    280    160    320*
Stanislaus River
  New Melones Dam                 Apr-Jul    460    66    560    360    695
NF Mokelumne River
  West Point                      Apr-Jul    260    62    320    200    416*
Mokelumne River
  Mokelumne Hill                  Apr-Jul    280    61    340    230    460
Cosumnes River
  Michigan Bar                    Apr-Jul     60    49     95     25    123

TULARE LAKE BASIN

Kern River
  Kernville, nr                   Apr-Jul    305    77    380    230    398*
  Isabella Dam, blo               Apr-Jul    360    75    440    280    480
  Bakersfield, nr                 Apr-Jul    370    76    450    280    490
Tule River
  Success Dam                     Apr-Jul     40    61     60     20     66
Kaweah River
  Terminus Dam                    Apr-Jul    230    79    280    180    290
NF Kings River
  Cliff Camp, nr                  Apr-Jul    200    83    240    160    240*
Kings River
  Pine Flat Dam, blo              Apr-Jul    970    78   1080    860   1250

EASTSIDE SIERRA - HUMBOLDT BASIN

Truckee River
  Lake Tahoe Stage Rise           Apr-High  0.70    51   0.94   0.46   1.38
Ltl Truckee River
  Stampede Dam                    Apr-Jul     52    65     66     37     80
Truckee River
  Farad                           Apr-Jul    165    63    195    115    260
EF Carson River
  Gardnerville, nr                Apr-Jul    120    63    137     95    189
WF Carson River
  Woodfords                       Apr-Jul     32    57     43     26     56
Carson River
  Carson City, nr                 Apr-Jul     90    48    132     60    188
  Fort Churchill, nr              Apr-Jul     75    42    109     41    178
East Walker River
  Bridgeport, nr                  Apr-Aug     52    78     68     36     67
West Walker River
  Ltl Walker, blo, Coleville, nr  Apr-Jul    115    74    145     95    156
NF Humboldt River
  Devils Gate, at, Halleck, nr    Apr-Jul     26    76     36   16.0     34*
SF Humboldt River
  Dixie Ck, abv, Elko, nr         Apr-Jul     60    79    105   15.0     76
Marys River
  Hot Springs, abv, Deeth, nr     Apr-Jul     30    77     40     20     39
Humboldt River
  Elko, nr                        Apr-Jul    105    68    157     52    154
  Palisade                        Apr-Jul    180    72    270     90    250
  Comus                           Apr-Jul    160    71    250     70    225
  Imlay, nr                       Apr-Jul    100    53    220     20    188
Martin Ck
  Paradise Vly, nr                Apr-Jul   14.0    75     20    8.0   18.7
			
			
* 30 Year Averages for 1971-2000 are incomplete.  Those forecast
points with an asterik have incomplete averages, so 1961-1990 averages
are listed.  The new averages will be incorporated into this product
when the complete data sets become available. 			

MP    Most probable volume in 1000 acre-feet.
MP%   Most probable volume in percent of the 71-00 average.
RMAX  Volume that has a 10 percent chance of being exceeded.
RMIN  Volume that has a 90 percent chance of being exceeded.
AVG   Average volume for the 71-00 period.

All forecast volumes reflect natural flow.  Actual observed flow may
be affected by upstream water management.

CNRFC/at/tm