Hydrographic Regions and Basins

Humboldt
		Region	Basin	Sq Miles	Acres	Hydrographic Basin/Sub-Basin Name	Counties	Nearest Cities	Designated
			Total	110,545	70,748,800	Square miles/acres
	[1] NORTHWEST REGION (Hydrographic Region 1)
	1	1	1	118	75520	Pueblo Valley	Humboldt	Denio	No
	2	1	2	214	136960	Continental Lake Valley	Humboldt	Denio	No
	3	1	3	195	124800	Gridley Lake Valley	Humboldt	Denio; Summit Lake	No
	4	1	4	494	316160	Virgin Valley	Humboldt; Washoe	Denio	No
	5	1	5	22	14080	Sage Hen Valley	Humboldt	Denio	No
	6	1	6	147	94080	Guano Valley	Washoe; Humboldt	Denio; Vya	No
	7	1	7	226	144640	Swan Lake Valley	Washoe; Humboldt	Denio	No
			Total	3,052	1,953,280	Square miles/acres
	[2] BLACK ROCK DESERT REGION (Hydrographic Region 2)
	24	2	24	315	201600	Hualapai Flat	Washoe; Humboldt; Pershing	Gerlach	Yes
	25	2	25	665	425600	High Rock Lake Valley	Washoe; Humboldt	Vya; Gerlach	No
	26	2	26	495	316800	Mud Meadow	Humboldt	Summit Lake	No
	27	2	27	60	38400	Summit Lake Valley	Humboldt	Summit Lake	No
	28	2	28	2179	1394560	Black Rock Desert	Humboldt; Pershing; Washoe	Sulfur; Jungo; Summit Lake	Yes
	29	2	29	528	337920	Pine Forest Valley	Humboldt	Denio	Yes
	30	2	30A	300	192000	Kings River Valley/Rio King Sub-Area	Humboldt	Orovada	Yes
	31	2	30B	113	72320	Kings River Valley/Sod House Sub-Area	Humboldt	McDermitt	Yes
	32	2	31	1052	673280	Desert Valley	Humboldt; Pershing	Jungo; Winnemucca	Yes
	33	2	32	313	200320	Silver State Valley	Humboldt	Winnemucca	Yes
	34	2	33A	632	404480	Quinn River Valley/Orovada Sub-Area	Humboldt	McDermitt	Yes
	35	2	33B	592	378880	Quinn River Valley/McDermitt Sub-Area	Humboldt	McDermitt	Yes
			Total	8,632	5,524,480	Square miles/acres
	[3] SNAKE RIVER REGION (Hydrographic Region 3)
	36	3	34	716	458240	Little Owyhee River Area	Elko; Humboldt	McDermitt	No
			Total	5,230	3,347,200	Square miles/acres
	[4] HUMBOLDT RIVER REGION (Hydrographic Region 4)
	66	4	64	720	460800	Clovers Area	Humboldt; Lander; Elko	Battle Mountain	Yes
	67	4	65	299	191360	Pumpernickel Valley	Humboldt; Pershing	Golconda; Valmy	Yes
	68	4	66	301	192640	Kelley Creek Valley	Humboldt; Elko	Golconda	Yes
	69	4	67	975	624000	Little Humboldt Valley	Humboldt; Elko	Paradise Valley	Yes
	70	4	68	167	106880	Hardscrabble Area	Humboldt	Paradise Valley	Yes
	71	4	69	600	384000	Paradise Valley	Humboldt	Paradise Valley; Winnemucca	Yes
	72	4	70	435	278400	Winnemucca Segment	Humboldt	Winnemucca; Golconda	Yes
	73	4	71	520	332800	Grass Valley	Pershing; Humboldt	Winnemucca	Yes
			Total	16,843	10,779,520	Square miles/acres
	[10] CENTRAL REGION (Hydrographic Region 10)
	141	10	131	504	322560	Buffalo Valley	Pershing; Lander; Humboldt	Battle Mountain; Winnemucca	Yes
			Total	46,783	29,941,120	Square miles/acres