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	10.55	9.28	8.93	13.48	87.05	76.71	42.06	37.79	40.78	32.49	16.95	12.56	32.50
Standard Deviation	4.43	3.37	2.61	8.35	34.41	28.81	15.56	17.87	23.96	17.80	8.32	5.90	7.17
Min	5.66	5.66	5.66	6.43	23.68	32.56	18.05	20.21	14.29	12.37	8.12	5.89	19.70
Max	22.67	18.97	15.95	38.05	159.43	140.72	76.34	79.88	120.44	72.44	38.58	28.45	45.09
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										35.68	22.12	11.05
1973	8.95	8.49	8.49	8.73	87.92	102.56	50.59	35.95	28.77	17.49	8.73	5.89	31.05
1974	5.66	5.66	5.66	7.98	119.35	57.30	36.33	20.56	14.29	12.37	8.51	7.82	25.12
1975	7.36	6.80	6.80	6.95	100.44	110.91	60.89	59.14	42.83	30.67	8.12	7.08	37.33
1976	7.08	7.08	7.08	7.91	80.05	53.76	18.05	24.26	18.94	14.53	10.38	9.63	21.56
1977	9.06	8.70	8.49	8.64	112.64	140.72	46.38	23.85	27.16	23.03	10.51	7.37	35.55
1978	6.51	6.03	8.18	11.72	90.90	61.07	51.73	24.44	19.55
1982					94.97	83.34	49.04	29.53	39.46
1988										48.70	28.88	22.01
1989	17.81	13.52	10.80	24.55	159.43	80.30	36.51	20.21	24.30	25.15	14.49	13.22	36.69
1990	10.69	9.71	9.97	12.37	74.23	64.38	27.39	33.34	120.44	53.14	23.69	15.81	37.93
1991	11.84	9.76	10.30	21.31	111.09	90.72	61.53	57.41	44.84	23.41	16.45	13.12	39.31
1992	11.62	10.76	11.89	16.48	85.34	126.75	76.34	79.88	58.43	27.95	20.06	15.62	45.09
1993	13.74	12.58	11.35	38.05	118.16	39.66	23.37	20.73	45.36	72.44
1997					118.05	84.24	24.75	41.06	22.23	13.40	10.63	9.01
1998	7.63	6.70	6.59	8.70	34.18	32.56	23.56	36.84	33.13	22.04	15.86	8.66	19.70
1999	7.10	6.52	6.11	7.57	69.94	58.95	42.72	43.27	33.41	32.70	12.68	9.43	27.53
2000	7.89	6.98	6.65	6.43	24.76	92.62	56.99	32.90	64.43	43.02	23.50	17.17	31.95
2001	13.15	10.07	8.82	16.72	81.07	58.09	43.38	37.33	42.56	22.04	14.87	12.23	30.03
2002	10.55	9.37	8.62	7.85	23.68	66.26	39.40	74.07	59.60	67.09	38.58	28.45	36.13
2003	22.67	18.97	15.95	17.22	67.72	53.26	30.27	23.33	35.05