GULKANA R AT SOURDOUGH AK

GULKANA R AT SOURDOUGH AK
Yukon

Point ID: 9215

Code: 15200280

Latitude: 62.52°	Distance to Outlet: N/A
Longitude: -145.53°	Yearly Min: 1972
X EASE-Grid: -1712815.00	Yearly Max: 2003
Y EASE-Grid: 2495239.00	Number of Years: 21
Drainage Area: 4584.30 km²	Percentage of Coverage: 66%
Drainage Area Effective: 4584.30 km²	Percentage of Coverage by Month: 56%
Source: USGS	Notes:
Gauge Altitude: 562.70

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Statistics

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Units:

m³/s

Statistic	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Mean	6.16	4.94	5.21	7.62	50.85	43.37	24.57	22.08	23.06	18.98	9.58	7.34	223.73
Standard Deviation	2.59	1.79	1.52	4.72	20.10	16.29	9.09	10.44	13.55	10.40	4.70	3.44	49.38
Min	3.31	3.01	3.31	3.63	13.83	18.41	10.54	11.81	8.08	7.23	4.59	3.44	135.65
Max	13.24	10.10	9.32	21.51	93.14	79.56	44.59	46.66	68.10	42.32	21.81	16.62	310.44
Coefficient of Variation	0.42	0.36	0.29	0.62	0.40	0.38	0.37	0.47	0.59	0.55	0.49	0.47	0.22

Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
1972										20.84	12.51	6.46
1973	5.23	4.52	4.96	4.94	51.36	57.99	29.55	21.00	16.27	10.22	4.94	3.44	213.75
1974	3.31	3.01	3.31	4.51	69.72	32.40	21.22	12.01	8.08	7.23	4.81	4.57	172.97
1975	4.30	3.62	3.97	3.93	58.68	62.71	35.57	34.55	24.22	17.92	4.59	4.13	257.01
1976	4.13	3.77	4.13	4.47	46.76	30.40	10.54	14.17	10.71	8.49	5.87	5.62	148.44
1977	5.29	4.63	4.96	4.88	65.80	79.56	27.09	13.93	15.35	13.46	5.94	4.31	244.70
1978	3.81	3.21	4.78	6.63	53.10	34.53	30.22	14.27	11.06
1982					55.48	47.12	28.65	17.25	22.31
1988										28.45	16.33	12.86
1989	10.40	7.20	6.31	13.88	93.14	45.40	21.33	11.81	13.74	14.69	8.19	7.72	252.59
1990	6.24	5.17	5.83	7.00	43.36	36.40	16.00	19.48	68.10	31.05	13.40	9.24	261.13
1991	6.92	5.19	6.02	12.05	64.90	51.29	35.94	33.54	25.35	13.68	9.30	7.66	270.66
1992	6.79	5.73	6.95	9.32	49.85	71.66	44.59	46.66	33.03	16.33	11.34	9.12	310.44
1993	8.03	6.70	6.63	21.51	69.03	22.43	13.65	12.11	25.65	42.32
1997					68.96	47.63	14.46	23.99	12.57	7.83	6.01	5.26
1998	4.46	3.57	3.85	4.92	19.96	18.41	13.77	21.52	18.73	12.88	8.97	5.06	135.65
1999	4.15	3.47	3.57	4.28	40.86	33.33	24.96	25.28	18.89	19.10	7.17	5.51	189.55
2000	4.61	3.72	3.88	3.63	14.47	52.37	33.29	19.22	36.43	25.13	13.29	10.03	219.93
2001	7.68	5.36	5.16	9.45	47.36	32.84	25.34	21.80	24.06	12.88	8.40	7.14	206.72
2002	6.16	4.98	5.04	4.44	13.83	37.47	23.02	43.27	33.70	39.19	21.81	16.62	248.71
2003	13.24	10.10	9.32	9.73	39.56	30.12	17.68	13.63	19.82