Hydrographic Regions and Basins

Douglas
		Region	Basin	Sq Miles	Acres	Hydrographic Basin/Sub-Basin Name	Counties	Nearest Cities	Designated
			Total	110,545	70,748,800	Square miles/acres
	[6] TRUCKEE RIVER REGION (Hydrographic Region 6)
	93	6	90	139	88960	Lake Tahoe Basin	Douglas; Washoe; Carson City	Incline Village; Glenbrook; Stateline	Yes
			Total	2,300	1,472,000	Square miles/acres
	[8] CARSON RIVER REGION (Hydrographic Region 8)
	108	8	102	480	307200	Churchill Valley	Lyon; Churchill; Douglas; Storey	Fallon	Yes
	109	8	103	369	236160	Dayton Valley	Lyon; Storey; Carson City; Douglas	Dayton; Virginia City	Yes
	110	8	104	69	44160	Eagle Valley	Carson City; Douglas	Carson City	Yes
	111	8	105	419	268160	Carson Valley	Douglas; Carson City	Minden; Gardnerville	Yes
			Total	3,519	2,252,160	Square miles/acres
	[9] WALKER RIVER REGION (Hydrographic Region 9)
	112	9	106	115	73600	Antelope Valley	Douglas	Topaz; Wellington	Yes
	113	9	107	479	306560	Smith Valley	Lyon; Douglas	Wellington	Yes
	114	9	108	516	330240	Mason Valley	Lyon; Mineral; Douglas	Yerington; Mason	Yes
			Total	3,046	1,949,440	Square miles/acres