LGDW1 - Water Supply Forecast - SNAKE

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SNAKE - LOWER GRANITE DAM (LGDW1) Forecasts for Water Year 2026
Official Water Supply ESP with 10 Days QPF Ensemble: 2025-11-15 Issued: 2025-11-15 Hide Forecast
Forecast Period	Forecasts Are in KAF				30 Year Average (1991-2020)
Forecast Period	90 %	50 %	% Average	10 %	30 Year Average (1991-2020)
APR-SEP	12003	19147	86	27913	22232
APR-JUL	10180	16735	84	25073	19946
APR-AUG	11073	17978	85	26554	21121
JAN-SEP	17875	25947	87	37310	29736
JAN-JUL	16063	23707	86	34470	27450
OCT-SEP	21645	29932	87	41046	34287
Experimental Water Supply HEFS with 15 days EQPF Ensemble: 2025-11-15 Issued: 2025-11-15 Hide Forecast
APR-SEP	11962	19395	87	27655	22232
APR-JUL	10126	17042	85	24972	19946
APR-AUG	11020	18258	86	26361	21121
JAN-SEP	18123	26276	88	38211	29736
JAN-JUL	16298	23921	87	35527	27450
OCT-SEP	21971	30501	89	42811	34287
Reference ESP with 0 Days QPF Ensemble: 2025-11-15 Issued: 2025-11-15 Hide Forecast
APR-SEP	12641	20000	90	28302	22232
APR-JUL	10745	17587	88	25592	19946
APR-AUG	11655	18817	89	27000	21121
JAN-SEP	18591	26840	90	38867	29736
JAN-JUL	16750	24515	89	36157	27450
OCT-SEP	22320	30805	90	43365	34287
Move the mouse over the desired "Forecast Period" to display a graph.

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ESP10 HEFS ESP0

Data Files

/chpsesp/ensemble/watersupply/LGDW1W_SQIN.ESPF10.csv

LGDW1W_SQIN.ESPF0.csv|2025-11-15
LGDW1W_SQIN.ESPF10.csv|2025-11-15
LGDW1W_SQIN.ESPFM.csv|2025-11-15