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LEWIS - MERWIN DAM (MEWW1)
Forecasts for Water Year 2027
Natural Forecast
ESP with 10 Days QPF     Ensemble: 2026-10-22 Issued: 2026-10-22 Hide Forecast
Forecasts Are in KAF 30 Year
Average
(1991-2020)
90 % 50 % %
Average		 10 %
APR-SEP 687 1039 93 1317 1122
APR-JUL 602 909 93 1196 979
APR-AUG 644 972 93 1259 1050
JAN-SEP 1706 2270 94 2864 2402
JAN-JUL 1582 2122 94 2727 2260
OCT-SEP 2317 2932 86 3626 3391
Experimental
HEFS with 15 days EQPF    Ensemble: 2026-10-22  Issued: 2026-10-22 Hide Forecast
APR-SEP 687 1039 93 1316 1122
APR-JUL 602 909 93 1195 979
APR-AUG 644 972 93 1258 1050
JAN-SEP 1707 2285 95 2867 2402
JAN-JUL 1582 2130 94 2731 2260
OCT-SEP 2334 2954 87 3638 3391
Reference
ESP with 0 Days QPF    Ensemble: 2026-10-22  Issued: 2026-10-22 Hide Forecast
APR-SEP 694 1039 93 1318 1122
APR-JUL 609 910 93 1197 979
APR-AUG 650 973 93 1260 1050
JAN-SEP 1726 2314 96 2883 2402
JAN-JUL 1602 2167 96 2750 2260
OCT-SEP 2433 3064 90 3930 3391
Move the mouse over the desired "Forecast Period" to display a graph.
<table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 2, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1709</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1180</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1040</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>901</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 3, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1709</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1180</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1040</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>901</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 4, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1709</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1180</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1040</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>901</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 5, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1708</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 6, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1708</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1180</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 7, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1708</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 8, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1702</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 9, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1701</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 10, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1701</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 11, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1701</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 12, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1700</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>694</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 13, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1700</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>901</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>693</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 14, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1697</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>691</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 15, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1696</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1179</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>690</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 16, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1696</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1178</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>689</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 17, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1697</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1178</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>689</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 18, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1697</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1178</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>689</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 19, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1696</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1175</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>688</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 20, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1696</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1174</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>900</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>688</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 21, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1696</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1318</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1174</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>897</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>688</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> <table id=popup_table> <tr><td id=popup_table_td_ESPTYPE colspan=2>ESP10<br><label id=popup_table_td_date>Oct 22, 2026</label></td></tr> <tr><td id=popup_table_td_data_max>MAX:</td><td id=popup_table_td_data>1695</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>1317</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>1173</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>1039</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>896</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>687</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>499</td></tr> </table> Link to image of plot 
  • MEWW1N_QINE.ESPF0.csv|2026-10-22
  • MEWW1N_QINE.ESPF10.csv|2026-10-22
  • MEWW1N_QINE.ESPFM.csv|2026-10-22
  • MEWW1N_SQIN.ESPF0.csv|2026-10-22
  • MEWW1N_SQIN.ESPF10.csv|2026-10-22
  • MEWW1N_SQIN.ESPFM.csv|2026-10-22



APR-SEP

#FFF68F
#33CCFF
#404040
#660066
#F00007
#66CCFF
ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast