Distribution of Inventoried Roadless Areas and Designated Wilderness by Elevation Class and Geographic Division
	Elevation Classes	Total NFS Area	Total NFS Area	IRA 1c Area	IRA 1b+1b1 Area	Wild. Area	Wild.+IRA Total
	(feet)	(acres)	(rounded acres)	(%)	(%)	(%)	(%)
Alaska	0000-1000	8,108,957	8,109,000	17	36	20	73
	1001-2000	5,277,685	5,278,000	22	39	25	87
	2001-3000	3,375,757	3,376,000	24	45	26	95
	3001-4000	2,498,691	2,499,000	24	48	25	97
	4001-5000	1,518,476	1,518,000	20	54	24	97
	5001-6000	587,218	587,000	15	56	27	98
	6001-7000	169,819	170,000	11	69	18	98
	7001-8000	62,671	63,000	10	78	11	99
	8001-9000	34,949	35,000	4	95	1	99
	>9000	30,393	30,000	3	95	0	98
Eastern U.S.	0000-1000	19,442,955	19,443,000	1	0	2	3
	1001-2000	18,068,477	18,068,000	2	1	8	10
	2001-3000	5,208,605	5,209,000	6	5	5	16
	3001-4000	2,463,819	2,464,000	8	6	8	22
	4001-5000	445,367	445,000	11	4	11	26
	5001-6000	54,625	55,000	16	4	23	42
	>6000	2,718	3,000	26	10	7	44
Western U.S.	0000-1000	1,181,447	1,181,000	2	5	4	11
	1001-2000	3,317,472	3,317,000	7	7	8	22
	2001-3000	11,472,621	11,473,000	9	5	8	22
	3001-4000	15,331,829	15,332,000	9	7	10	25
	4001-5000	24,054,181	24,054,000	9	6	10	25
	5001-6000	24,050,861	24,051,000	12	8	15	34
	6001-7000	24,393,882	24,394,000	20	10	17	46
	7001-8000	22,992,439	22,992,000	28	10	16	53
	8001-9000	16,966,797	16,967,000	30	9	18	57
	>9000	21,274,661	21,275,000	23	9	36	68
	Definitions of Categories of Inventoried Roadless Areas
	1B	Inventoried roadless area where road construction or reconstruction is not allowed
	1B-1	Inventoried roadless area where road construction or reconstruction is not allowed, and the forest plan recommends as wilderness
	1C	Inventoried roadless area where road construction or reconstruction is allowed