June 1st Water Supply Outlook Update – East Side - Humboldt - Klamath
California-Nevada River Forecast Center
Issued Tuesday, June 3, 2008
JUNE 1, 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 0.55 40 64 48 32 15 1.38
MAY-HIGH 0.55 51 78 59 43 24 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 49.0 61 77 67 56 49 80.0
MAY-JUL 37.0 59 79 66 52 44 63.0
TRUCKEE R nr Farad, Ca APR-JUL 158 61 75 67 55 46 260
MAY-JUL 116 60 80 68 52 40 193
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 112 59 64 61 57 54 189
WF CARSON R nr Woodfords, CA APR-JUL 29.0 52 57 54 50 47 56.0
CARSON R nr Carson City, NV APR-JUL 75 40 47 43 37 33 188
MAY-JUL 63 41 50 45 38 34 152
CARSON R at Fort Churchill, NV APR-JUL 60 34 51 40 27 17 178
MAY-JUL 53 37 53 43 30 20 145
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 42.0 63 63 63 63 63 67.0
MAY-AUG 38.0 64 97 77 51 32 59.0
W WALKER R blw L Walker nr ColevillAPR-JUL 105 67 88 76 59 47 156
MAY-JUL 92 67 90 76 57 43 138
UPPER HUMBOLDT RIVER BASIN
50% % of max 30% 70% min 30-yr
Forecast Point period (KAF) avg (%) (%) (%) (%) avg
-------------- ------ ------ ---- ---- ---- ---- ---- -----
HUMBOLDT R at Palisades, Nv APR-JUL 125 50 85 64 36 15 250
MAY-JUL 107 55 97 72 38 13 195
LOWER HUMBOLDT RIVER BASIN
50% % of max 30% 70% min 30-yr
Forecast Point period (KAF) avg (%) (%) (%) (%) avg
-------------- ------ ------ ---- ---- ---- ---- ---- -----
HUMBOLDT R nr Imlay, Nv APR-JUL 65 35 101 62 17 1 188
MAY-JUL 57 40 123 74 17 1 141
KLAMATH BASIN
50% % of max 30% 70% min 30-yr
Forecast Point period (KAF) avg (%) (%) (%) (%) avg
-------------- ------ ------ ---- ---- ---- ---- ---- -----
Clear Lake Inflow (2) JUN-JUL 5.2 72 13.9 8.7 1.69 0.20 7.2
JUN-SEP 8.7 72 17.1 12.1 5.3 0.30 12.1
Gerber Reservoir Inflow (2) JUN-JUL 1.40 77 4.0 2.5 0.35 0.05 1.82
JUN-SEP 1.80 75 4.4 2.8 0.75 0.10 2.4
Sprague R nr Chiloquin JUN-JUL 49 88 67 56 42 31 56
JUN-SEP 72 88 94 81 63 50 82
Williamson R bl Sprague R nr ChiloqJUN-JUL 97 99 119 106 88 75 98
JUN-SEP 160 99 189 172 148 131 162
Upper Klamath Lake Inflow (1,2) JUN-JUL 108 98 156 123 93 60 110
JUN-SEP 195 98 265 215 174 127 198
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
2) streamflow is adjusted for upstream storage
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