National Forest System Inventoried Roadless Area Acreage by Ecoregionand Protected Status

National Forest System Inventoried Roadless Area Acreage by Ecoregion and Protected Status

ecoregion	code #	outst.	total NFS land	total NFS land	wild.	non-wild. SDA	IRA 1b+1b1	IRA 1c	wild.+IRA	all SDA+IRA
ecoregion	code #	outst.	(acres)	(rounded acres)	(%)	(%)	(%)	(%)	(%)	(%)
Alaska Geographic Division
Northern Pacific Coast	23	X	10,985,495	10,985,000	25	8	26	17	69	77
Icefields and Tundra	104		10,678,596	10,679,000	21	15	34	23	79	94

Eastern Geographic Division
Western Great Lakes	7		10,884,786	10,885,000	11	1	0	1	12	14
New England/Acadia	12		1,473,782	1,474,000	11	2	8	9	28	30
Allegheny Highlands	15		755,817	756,000	1	6	1	0	2	8
Appalachian/Blue Ridge	16	X	9,319,500	9,320,000	4	4	4	4	12	16
Mixed Mesophytic	17	X	4,598,902	4,599,000	2	0	0	2	4	5
Central US Hardwoods	18		4,794,837	4,795,000	2	0	0	1	3	4
Ozark Mountains	19		3,517,469	3,517,000	3	3	1	2	6	9
Southeast Mixed Forests	22	X	3,091,947	3,092,000	0	0	0	0	0	0
Piney Woods	48		2,876,939	2,877,000	2	0	0	0	2	2
Middle Atlantic Coast	50		712,405	712,000	6	1	0	3	9	10
Southeastern Conifer	51	X	1,975,271	1,975,000	4	1	1	1	6	6
Florida Sand Pine Scrub	52	X	252,613	253,000	4	0	0	1	5	5
Northern Tall Grasslands	59		136,693	137,000	0	0	0	34	34	34

Western Geographic Division
North Central Rockies	30		17,180,168	17,180,000	20	3	11	16	47	49
Okanogan Forests	31		802,195	802,000	0	1	1	16	17	18
Cascade Mnts. Leeward	32		3,164,919	3,165,000	37	15	12	6	56	72
North Cascades	33	X	1,787,923	1,788,000	43	11	18	4	65	76
Central Pacific Coastal	34	X	1,696,450	1,696,000	5	3	5	2	12	15
Central/South. Cascades	36		6,929,364	6,929,000	19	8	6	4	30	38
Eastern Cascades	37		7,603,916	7,604,000	2	3	2	4	8	11
Blue Mountains	38		6,735,297	6,735,000	15	4	5	8	28	32
Klamath-Siskiyou	39	X	6,944,081	6,944,000	20	10	7	8	34	44
Sierra Nevada	41	X	8,936,063	8,936,000	21	5	4	7	32	37
Great Basin Montane	42		961,852	962,000	29	7	6	46	80	87
South Central Rockies	43		27,968,075	27,968,000	24	5	12	27	63	69
Wasatch/Uinta Montane	44		6,950,877	6,951,000	9	1	6	38	54	55
Colorado Rockies	45		18,908,663	18,909,000	19	2	5	20	44	45
Arizona Mountains	46		15,667,128	15,667,000	12	4	5	6	23	26
Madrean Sky Islands	47	X	1,501,457	1,501,000	20	4	24	0	44	48
Palouse Grasslands	53		421,460	421,000	7	51	1	12	20	70
Montana Valley/Foothill	57		1,298,634	1,299,000	2	2	4	27	33	35
NW Mixed Grasslands	58		7,062,118	7,062,000	0	0	1	5	6	6
West. Short Grasslands	63		3,149,027	3,149,000	0	0	0	0	0	0
C. Cal. Shrub/Savanna	70	X	1,088,738	1,089,000	9	15	5	19	33	48
S. Cal. Woods/Shrub	71	X	2,928,135	2,928,000	32	1	9	19	61	61
S. Cal. Coastal Scrub	72	X	729,377	729,000	14	2	11	9	34	36
Snake/Col. Shrub Steppe	75		1,285,337	1,285,000	1	6	9	24	34	40
Grt. Basin Shrub Steppe	76		8,108,880	8,109,000	9	3	4	47	60	63
Wyoming Basin	77		594,970	595,000	3	24	1	35	38	63
Colorado Plateau	78		3,268,870	3,269,000	6	11	3	19	28	39
Mojave Desert	79		424,626	425,000	23	59	2	3	28	87
Sonoran Desert	80	X	192,522	193,000	25	0	7	3	35	35
Chihuahuan Desert	81	X	338,450	338,000	5	0	15	11	30	31

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