Water Supply Forecast Listing

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Summary for Water Year (2026)

Ensemble Date: 2026-01-19 Issued Date: 2026-01-19

#	ID	Servicing WFO	Forecast Period	Name	90% Exceedence KAF	50% Exceedence KAF	% Normal	10% Exceedence KAF	30 Year Normal
1	ABBM8	MSO	APR-SEP	CLARK FORK - ABOVE BLACKFOOT	483	660	97	978	680
2	ABOM8	MSO	APR-SEP	CLARK FORK - ABOVE MISSOULA	1026	1373	87	1917	1571
3	ALFW1	OTX	APR-SEP	PEND OREILLE - ALBENI FALLS DAM	9714	11832	89	15339	13347
4	AMFI1	PIH	APR-SEP	SNAKE - AT AMERICAN FALLS DAM	1345	2689	102	4078	2624
5	ANTI1	PIH	APR-SEP	HENRYS FORK - AT ST. ANTHONY	448	681	86	846	794
6	ARAI1	BOI	APR-SEP	SF BOISE - ANDERSON RANCH DAM	264	444	90	583	495
7	ARDQ2	OTX	APR-SEP	COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)	23031	26829	112	30091	24059
8	BELM8	MSO	APR-SEP	CLARK FORK - BELOW MISSOULA	2042	2640	91	3541	2893
9	BEUO3	BOI	APR-SEP	NF MALHEUR - AT BEULAH	21.53	33.76	57	70.13	59.29
10	BFEI1	OTX	APR-SEP	KOOTENAI - AT BONNERS FERRY	7549	9030	107	10504	8463
11	BIRQ2	CAN	APR-SEP	COLUMBIA - AT BIRCHBANK	39067	46473	109	52046	42578
12	BITM8	MSO	APR-SEP	BITTERROOT - NEAR MISSOULA	944	1215	94	1530	1289
13	BONM8	MSO	APR-SEP	BLACKFOOT - NEAR BONNER	515	673	76	954	891
14	BONO3	PQR	APR-SEP	COLUMBIA - BONNEVILLE DAM	76014	90935	96	108295	95202
15	BRNI1	BOI	APR-SEP	SNAKE - BROWNLEE DAM	4763	6280	98	8513	6398
16	BUMW1	PDT	APR-SEP	BUMPING - BELOW BUMPING DAM	69.73	83.77	67	124	125
17	BUSO3	BOI	APR-SEP	SILVIES - NEAR BURNS	8.24	16.06	22	37.55	71.47
18	CABI1	OTX	APR-SEP	CLARK FORK - CABINET GORGE DAM	8891	11013	95	14407	11639
19	CASW1	PQR	APR-SEP	COWLITZ - AT CASTLE ROCK	1564	2091	83	2882	2504
20	CFMM8	MSO	APR-SEP	FLATHEAD - AT COLUMBIA FALLS	3819	5031	89	6314	5634
21	CHDW1	OTX	APR-SEP	CHELAN - LAKE CHELAN DAM	782	973	85	1333	1139
22	CHEI1	PIH	APR-SEP	FALL RIVER - NEAR CHESTER	219	327	87	418	377
23	CIBW1	OTX	APR-SEP	COLUMBIA - AT INTL BOUNDARY	50376	58841	103	67206	56951
24	CLDI1	OTX	APR-SEP	ST JOE - AT CALDER	649	904	79	1247	1138
25	CLEW1	PDT	APR-SEP	CLE ELUM - NEAR ROSLYN	223	298	71	412	419
26	COEI1	OTX	APR-SEP	COEUR D ALENE - COEUR D ALENE LAKE	1279	1890	75	2551	2504
27	CONW1	SEW	APR-SEP	SKAGIT - NEAR CONCRETE	4423	5240	88	6547	5955
28	CSCI1	BOI	APR-SEP	NF PAYETTE - CASCADE DAM	312	454	93	570	487
29	DARM8	MSO	APR-SEP	BITTERROOT - NEAR DARBY	336	471	91	621	519
30	DCDQ2	CAN	APR-SEP	DUNCAN - DUNCAN DAM	2150	2393	108	2677	2224
31	DONO3	BOI	APR-SEP	DONNER UND BLITZEN - NR FRENCHGLEN	19.39	39.08	63	64.87	62.51
32	DRBI1	BOI	APR-SEP	DEADWOOD - BELOW DEADWOOD RES	82.12	120	89	155	135
33	DRSW1	SEW	APR-SEP	DUNGENESS - NEAR SEQUIM	95.53	121	84	161	145
34	DWRI1	MSO	APR-SEP	NF CLEARWATER - DWORSHAK DAM	1521	2020	77	2467	2620
35	EASI1	OTX	APR-SEP	MOYIE - AT EASTPORT	269	401	101	526	395
36	EGCO3	BOI	APR-SEP	EAGLE CREEK - ABOVE SKULL CK	87.95	121	70	154	174
37	EMMI1	BOI	APR-SEP	PAYETTE - NEAR EMMETT	828	1252	95	1762	1325
38	ENVI1	OTX	APR-SEP	NF COEUR D ALENE - AT ENAVILLE	341	545	73	742	743
39	ESTO3	PQR	APR-SEP	CLACKAMAS - AT ESTACADA	453	597	81	755	733
40	FCFM8	MSO	APR-SEP	NF FLATHEAD - NEAR COLUMBIA FALLS	1214	1550	89	2009	1750
41	GCDW1	OTX	APR-SEP	COLUMBIA - GRAND COULEE DAM	53308	62369	101	72379	61483
42	GIBO3	PDT	APR-SEP	UMATILLA - NEAR GIBBON	30.47	53.1	64	72.91	82.43
43	GREW4	RIW	APR-SEP	GREYS - AB RES NR ALPINE	265	337	91	435	371
44	HALI1	PIH	APR-SEP	BIG WOOD - AT HAILEY	178	272	106	382	257
45	HCDI1	PDT	APR-SEP	SNAKE - AT HELLS CANYON DAM	4763	6280	93	8513	6725
46	HEII1	PIH	APR-SEP	SNAKE - NEAR HEISE	2944	3800	99	4882	3849
47	HHWM8	MSO	APR-SEP	SF FLATHEAD - HUNGRY HORSE DAM	1535	1831	88	2259	2088
48	HLKW1	PDT	APR-SEP	YAKIMA - NEAR HORLICK	508	706	73	914	962
49	HOTI1	BOI	APR-SEP	BRUNEAU - NEAR HOT SPRINGS	67.16	116	63	169	183
50	HRSI1	BOI	APR-SEP	PAYETTE - NEAR HORSESHOE BEND	995	1452	91	1864	1597
51	HWRI1	PIH	APR-SEP	BIG LOST - AT HOWELL RANCH NEAR CHILLY	159	243	141	342	172
52	IMNO3	PDT	APR-SEP	IMNAHA - AT IMNAHA	146	224	81	292	277
53	JDAO3	PDT	APR-SEP	COLUMBIA - JOHN DAY DAM	74480	89469	97	106518	92354
54	JLKW4	RIW	APR-SEP	SNAKE - JACKSON LAKE AT DAM	713	903	106	1065	849
55	KACW1	PDT	APR-SEP	KACHESS - NEAR EASTON	51.55	77.7	68	103	114
56	KEEW1	PDT	APR-SEP	YAKIMA - NEAR MARTIN	61.88	89.51	69	119	129
57	KERM8	MSO	APR-SEP	FLATHEAD - SELI’Š KSANKA QLISPE’ DAM	4322	5699	87	7267	6577
58	KIOW1	PDT	APR-SEP	YAKIMA - AT KIONA	557	792	69	1206	1149
59	LAUW1	OTX	APR-SEP	KETTLE - AT LAURIER	743	1366	70	1855	1954
60	LEOI1	OTX	APR-SEP	KOOTENAI - AT LEONIA	7056	8361	107	9579	7803
61	LGDW1	OTX	APR-SEP	SNAKE - LOWER GRANITE DAM	14560	19595	88	23390	22232
62	LGNO3	PDT	APR-SEP	GRANDE RONDE - NEAR PERRY	51.19	122	69	234	176
63	LLKW1	OTX	APR-SEP	SPOKANE - AT LONGLAKE	1642	2253	78	2942	2901
64	LSTO3	PDT	APR-SEP	LOSTINE - NR LOSTINE	65.51	90.14	78	117	116
65	LUCI1	BOI	APR-SEP	BOISE - LUCKY PEAK DAM	683	1129	85	1471	1329
66	LYDM8	MSO	APR-SEP	KOOTENAI - LIBBY DAM	5909	7180	112	8063	6429
67	MACI1	PIH	APR-SEP	BIG LOST - MACKAY RESERVOIR NEAR MACKAY	143	224	165	321	136
68	MADO3	BOI	APR-SEP	MALHEUR - NEAR DREWSEY	17.42	31.29	48	62.25	64.84
69	MAGI1	PIH	APR-SEP	BIG WOOD - MAGIC DAM	118	230	96	384	240
70	MCDQ2	CAN	APR-SEP	COLUMBIA - MICA DAM	11755	13562	110	15187	12296
71	MCDW1	PDT	APR-SEP	COLUMBIA - MCNARY DAM	72866	87601	94	104731	92790
72	MEHO3	PQR	APR-SEP	NORTH SANTIAM - AT MEHAMA	480	685	80	921	855
73	MEWW1	PQR	APR-SEP	LEWIS - MERWIN DAM	628	873	81	1200	1082
74	MODO3	PDT	APR-SEP	DESCHUTES - AT MOODY NR BIGGS	1677	1716	90	1789	1902
75	MONO3	PDT	APR-SEP	NF JOHN DAY - AT MONUMENT	176	365	65	549	564
76	MYDW1	PQR	APR-SEP	COWLITZ - MAYFIELD RESERVOIR	1158	1589	85	2121	1864
77	NACW1	PDT	APR-SEP	NACHES - NEAR NACHES	506	629	78	882	807
78	NITW1	OTX	APR-SEP	SIMILKAMEEN - NEAR NIGHTHAWK	1122	1518	111	1881	1366
79	ORFI1	MSO	APR-SEP	CLEARWATER - AT OROFINO	2744	3746	81	4679	4632
80	OWYO3	BOI	APR-SEP	OWYHEE - OWYHEE DAM	115	211	63	507	336
81	PALI1	PIH	APR-SEP	SNAKE - NEAR IRWIN	2739	3502	98	4514	3577
82	PARI1	BOI	APR-SEP	BOISE - NEAR PARMA	363	468	80	767	584
83	PARW1	PDT	APR-SEP	YAKIMA - NEAR PARKER	1275	1575	83	2096	1899
84	PATW1	OTX	APR-SEP	METHOW - NEAR PATEROS	894	1161	120	1495	965
85	PDTO3	PDT	APR-SEP	UMATILLA - AT PENDLETON	43.8	98.38	62	163	158
86	PESW1	OTX	APR-SEP	WENATCHEE - AT PESHASTIN	928	1172	78	1579	1496
87	PLNM8	MSO	APR-SEP	CLARK FORK - NEAR PLAINS	7619	9538	90	12481	10574
88	PRDW1	OTX	APR-SEP	COLUMBIA - BLO PRIEST RAPIDS DAM	57808	68076	100	79742	68162
89	PRTI1	OTX	APR-SEP	PRIEST - NEAR PRIEST RIVER	442	601	71	824	843
90	QBYQ2	CAN	APR-SEP	KOOTENAI - KOOTENAY L AT QUEENS BAY	14656	17139	108	19378	15842
91	REVQ2	CAN	APR-SEP	COLUMBIA - REVELSTOKE DAM	16501	19130	111	21357	17242
92	REXI1	PIH	APR-SEP	HENRYS FORK - AT REXBURG	869	1257	74	1516	1710
93	RIMW1	PDT	APR-SEP	TIETON - AT TIETON DAM	180	204	91	246	225
94	RIRI1	PIH	APR-SEP	WILLOW CREEK - NEAR RIRIE	28.32	62.62	104	122	60.33
95	RISW1	OTX	APR-SEP	COLUMBIA - BLO ROCK ISLAND DAM	57787	68057	101	79737	67524
96	RYGO3	MFR	APR-SEP	ROGUE - AT RAYGOLD	406	624	75	874	831
97	SALW4	RIW	APR-SEP	SALT - ABV PALISADES RES NR ETNA	244	349	95	469	368
98	SERO3	PDT	APR-SEP	JOHN DAY - AT SERVICE CK	223	438	55	696	798
99	SFLN2	PIH	APR-SEP	SALMON FALLS CREEK - NR SAN JACINTO	21.77	41.83	62	81.55	67.85
100	SHYI1	PIH	APR-SEP	SNAKE - NEAR SHELLEY	3427	4638	95	5992	4905
101	SKHI1	BOI	APR-SEP	SNAKE - AT KING HILL	2385	2888	85	4135	3412
102	SLCQ2	CAN	APR-SEP	SLOCAN - NEAR CRESCENT VALLEY	1806	2253	117	2621	1933
103	SLMO3	PQR	APR-SEP	WILLAMETTE - AT SALEM	2503	3831	81	5644	4754
104	SMKQ2	CAN	APR-SEP	SIMILKAMEEN - NEAR HEDLEY	884	1194	119	1501	1004
105	SMNI1	MSO	APR-SEP	SALMON - AT SALMON	763	991	107	1332	929
106	SPDI1	OTX	APR-SEP	CLEARWATER - AT SPALDING	4451	5992	80	7501	7481
107	SPOW1	OTX	APR-SEP	SPOKANE - AT SPOKANE	1338	1960	76	2645	2587
108	SRGM8	MSO	APR-SEP	CLARK FORK - AT ST REGIS	2759	3508	93	4579	3771
109	STHW1	OTX	APR-SEP	STEHEKIN - AT STEHEKIN	574	713	88	899	814
110	SWAI1	BOI	APR-SEP	SNAKE - BELOW SWAN FALLS	2644	3120	96	4300	3258
111	TDAO3	PDT	APR-SEP	COLUMBIA - THE DALLES DAM	74928	89929	96	107038	94166
112	TEAI1	PIH	APR-SEP	TETON - NEAR ST. ANTHONY	295	412	92	548	447
113	TONW1	OTX	APR-SEP	OKANOGAN - NEAR TONASKET	1260	1773	103	2197	1720
114	TOPI1	PIH	APR-SEP	PORTNEUF - AT TOPAZ	44.08	63.16	87	79.97	72.20
115	TRYO3	PDT	APR-SEP	GRANDE RONDE - TROY	529	902	68	1345	1331
116	UNYO3	PDT	APR-SEP	BURNT - Unity Dam & Burnt RVR NR Hereford	5.71	14.51	47	26.89	31.00
117	VIDO3	PQR	APR-SEP	MCKENZIE - NEAR VIDA	802	974	82	1258	1195
118	WDHN2	LKN	APR-SEP	OWYHEE - WILDHORSE DAM	3.17	14.22	89	30.27	15.92
119	WEII1	BOI	APR-SEP	SNAKE - AT WEISER	4465	5874	99	7970	5956
120	WGCM8	MSO	APR-SEP	MF FLATHEAD - NEAR WEST GLACIER	1077	1483	87	1875	1697
121	WHBI1	MSO	APR-SEP	SALMON - AT WHITEBIRD	4126	5710	93	7195	6158
122	WODI1	PIH	APR-SEP	LITTLE WOOD - NEAR CAREY	46.2	88.01	115	150	76.59
123	WSRI1	BOI	APR-SEP	WEISER - NEAR WEISER	204	308	79	440	389
124	WTLO3	PQR	APR-SEP	SOUTH SANTIAM - AT WATERLOO	298	506	86	781	590

Link to main Northwest River Forecast Center (NWRFC) web site

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