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COLUMBIA - THE DALLES DAM (TDAO3)
Forecasts for Water Year 2027
Official Water Supply
ESP with 10 Days QPF     Ensemble: 2026-10-13 Issued: 2026-10-13 Hide Forecast
Forecasts Are in KAF 30 Year
Average
(1991-2020)
90 % 50 % %
Average		 10 %
APR-SEP 69168 85585 91 110716 94166
APR-JUL 58401 73938 90 94134 81933
APR-AUG 64945 81240 91 104122 89196
JAN-SEP 83046 100918 87 132883 115946
JAN-JUL 72927 88975 86 114240 103714
OCT-SEP 94094 113537 86 146806 132314
Experimental Water Supply
HEFS with 15 days EQPF    Ensemble: 2026-10-13  Issued: 2026-10-13 Hide Forecast
APR-SEP 68839 87257 93 109777 94166
APR-JUL 57746 74401 91 93116 81933
APR-AUG 64706 82377 92 103028 89196
JAN-SEP 83661 103452 89 131678 115946
JAN-JUL 73004 90471 87 113134 103714
OCT-SEP 94947 115256 87 145403 132314
Reference
ESP with 0 Days QPF    Ensemble: 2026-10-13  Issued: 2026-10-13 Hide Forecast
APR-SEP 70179 88707 94 110518 94166
APR-JUL 58978 75706 92 94114 81933
APR-AUG 65835 83739 94 104108 89196
JAN-SEP 85138 105452 91 132738 115946
JAN-JUL 74696 92554 89 117884 103714
OCT-SEP 97551 118998 90 149170 132314
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>142287</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>109771</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>95883</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>88014</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>76061</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69588</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>55826</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>144468</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>110295</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>96418</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>88944</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>77101</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69974</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>55634</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>143915</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>110263</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>96170</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>88660</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>76602</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69950</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>55410</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>141981</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>109442</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>95479</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>87007</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>75747</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69303</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>54768</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>142101</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>110151</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>96139</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>87959</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>76210</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69935</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>55236</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>141380</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>109743</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>96071</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>87249</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>75894</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69409</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>54140</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>140452</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>110235</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>95996</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>88023</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>75722</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69354</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>54218</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>139457</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>110322</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>95539</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>87683</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>75706</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69293</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>53994</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>138642</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>109784</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>95057</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>86323</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>75751</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>68895</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>53695</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>138755</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>109995</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>94448</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>86432</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>75265</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>68987</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>52735</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>138418</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>110667</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>93964</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>86191</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>75470</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69055</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>52986</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>137890</td></tr> <tr><td id=popup_table_td_data_10>10%:</td><td id=popup_table_td_data>110716</td></tr> <tr><td id=popup_table_td_data_25>25%:</td><td id=popup_table_td_data>93510</td></tr> <tr><td id=popup_table_td_data_50>50%:</td><td id=popup_table_td_data_50>85585</td></tr> <tr><td id=popup_table_td_data_75>75%:</td><td id=popup_table_td_data>74636</td></tr> <tr><td id=popup_table_td_data_90>90%:</td><td id=popup_table_td_data>69168</td></tr> <tr><td id=popup_table_td_data_min>MIN:</td><td id=popup_table_td_data>53133</td></tr> </table> Link to image of plot 
  • TDAO3W_SQIN.ESPF0.csv|2026-10-13
  • TDAO3W_SQIN.ESPF10.csv|2026-10-13
  • TDAO3W_SQIN.ESPFM.csv|2026-10-13



APR-SEP

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