June 1st Water Supply Outlook Update � East Side Sierra - Humboldt - Klamath
California-Nevada River Forecast Center
Issued Monday, June 5, 2006
Forecasts are based on preliminary data and are coordinated with the
NRCS, Portland, OR.
June 1, 2006
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 2.45 178 202 186 170 153 1.38
MAY-HIGH 1.53 142 169 150 133 115 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 135.0 169 212 185 154 134 80.0
MAY-JUL 94.0 149 201 168 132 111 63.0
TRUCKEE R nr Farad, Ca APR-JUL 445 171 186 177 165 157 260
MAY-JUL 310 161 181 169 152 140 193
CARSON RIVER BASIN
50% % of max 30% 70% min 30-yr
Forecast Point period (KAF) avg (%) (%) (%) (%) avg
-------------- ------ ------ ---- ---- ---- ---- ---- -----
E F CARSON R nr Gardnerville, Nv APR-JUL 310 164 176 169 159 152 189
MAY-JUL 274 177 191 183 171 163 155
W F CARSON R nr Woodfords, Ca APR-JUL 92.0 164 184 172 156 144 56.0
MAY-JUL 80.0 182 207 192 172 157 44.0
CARSON R nr Carson City, Nv APR-JUL 340 181 201 189 173 161 188
MAY-JUL 294 193 218 204 183 168 152
CARSON R at Fort Churchill, NV APR-JUL 360 202 219 209 196 185 178
MAY-JUL 308 212 229 219 206 196 145
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 145.0 216 244 228 205 189 67.0
MAY-AUG 131.0 222 254 235 209 190 59.0
W WALKER R blw L Walker nr ColevillAPR-JUL 290 186 206 194 178 165 156
MAY-JUL 278 201 248 224 176 152 138
UPPER HUMBOLDT RIVER BASIN
50% % of max 30% 70% min 30-yr
Forecast Point period (KAF) avg (%) (%) (%) (%) avg
-------------- ------ ------ ---- ---- ---- ---- ---- -----
HUMBOLDT R at Palisade, Nv APR-JUL 550 220 255 234 206 185 250
MAY-JUL 317 163 205 179 146 121 195
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 480 281 354 311 251 208 171
MAY-JUL 363 281 371 318 245 191 129
KLAMATH BASIN
50% % of max 30% 70% min 30-yr
Forecast Point period (KAF) avg (%) (%) (%) (%) avg
-------------- ------ ------ ---- ---- ---- ---- ---- -----
Clear Lake Net Inflow (2) APR-SEP 50.0 105 117 110 100 93 47.7
MAY-JUL 26.0 135 161 146 124 108 19.3
MAY-SEP 33.0 126 148 135 117 104 26.2
50% % of max 30% 70% min 30-yr
period (KAF) avg (%) (%) (%) (%) avg
------ ------ ---- ---- ---- ---- ---- -----
Gerver Reservoir Net Inflow (2) APR-SEP 54.0 303 317 309 298 289 17.8
MAY-JUL 10.00 156 216 180 132 97 6.40
MAY-SEP 10.40 158 198 174 142 118 6.58
JUN-JUL 2.40 132 207 162 102 57 1.82
50% % of max 30% 70% min 30-yr
period (KAF) avg (%) (%) (%) (%) avg
------ ------ ---- ---- ---- ---- ---- -----
Sprague River near Chiloquin APR-SEP 390 170 189 177 162 150 230
MAY-JUL 220 172 205 185 159 139 128
MAY-SEP 260 168 195 179 157 140 155
50% % of max 30% 70% min 30-yr
period (KAF) avg (%) (%) (%) (%) avg
------ ------ ---- ---- ---- ---- ---- -----
Upper Klamath Lake Net Inflow (1) APR-SEP 819 159 168 162 156 150 515
MAY-SEP 545 160 186 172 148 134 340
JUN-JUL 210 191 231 204 178 151 110
JUN-SEP 320 162 184 169 155 139 198
50% % of max 30% 70% min 30-yr
period (KAF) avg (%) (%) (%) (%) avg
------ ------ ---- ---- ---- ---- ---- -----
Williamson R near Chiloquin APR-SEP 617 160 167 163 157 153 385
MAY-SEP 420 157 166 161 154 149 267
JUN-JUL 160.0 163 178 169 157 147 98.3
JUN-SEP 234 144 155 149 140 134 162
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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