Measurement	Region	Annual Average, 2000–2002	Annual Average, 2017–2019	Percent Change
Dry Nitrogen Deposition (kg-N/ha)	Mid-Atlantic	8.5	4.8	-43
	Midwest	6.8	4.8	-29
	North Central	4.6	4.6	-2
	Northeast	5.3	3.0	-43
	Pacific	3.1	2.4	-21
	Rocky Mountain	2.3	2.0	-14
	South Central	5.4	4.5	-17
	Southeast	6.7	4.4	-34
Wet Nitrogen Deposition (kg-N/ha)	Mid-Atlantic	5.0	4.1	-18
	Midwest	6.0	5.6	-6
	North Central	4.4	5.3	21
	Northeast	4.9	3.6	-25
	Pacific	1.1	1.1	-1
	Rocky Mountain	1.5	1.6	10
	South Central	3.5	3.8	10
	Southeast	4.0	3.6	-10
Total Deposition of Nitrogen (kg-N/ha)	Mid-Atlantic	13	8.9	-34
	Midwest	13	11	-18
	North Central	9.1	9.9	9
	Northeast	10	6.6	-35
	Pacific	4.2	3.5	-16
	Rocky Mountain	3.8	3.6	-5
	South Central	8.9	8.3	-6
	Southeast	11	8.0	-25
Total Deposition of Oxidized Nitrogen (kg-N/ha)	Mid-Atlantic	10	5.3	-49
	Midwest	8.5	4.9	-43
	North Central	4.6	3.5	-23
	Northeast	7.6	3.8	-50
	Pacific	3.0	1.9	-38
	Rocky Mountain	2.6	1.9	-27
	South Central	6.0	4.5	-25
	Southeast	8.1	4.6	-43
Total Deposition of Reduced Nitrogen (kg-N/ha)	Mid-Atlantic	3.0	3.6	19
	Midwest	4.2	5.6	32
	North Central	4.5	6.4	43
	Northeast	2.5	2.8	10
	Pacific	1.2	1.6	40
	Rocky Mountain	1.2	1.7	43
	South Central	2.8	3.8	34
	Southeast	2.7	3.4	27
Dry Sulfur Deposition (kg-S/ha)	Mid-Atlantic	12	1.4	-89
	Midwest	7.6	1.4	-81
	North Central	1.7	0.7	-59
	Northeast	6.0	1.1	-83
	Pacific	0.6	0.3	-45
	Rocky Mountain	0.7	0.4	-44
	South Central	1.8	0.8	-56
	Southeast	4.7	0.9	-81
Wet Sulfur Deposition (kg-S/ha)	Mid-Atlantic	6.1	1.7	-73
	Midwest	5.3	1.9	-64
	North Central	2.2	1.3	-39
	Northeast	5.0	1.3	-73
	Pacific	0.5	0.3	-40
	Rocky Mountain	0.7	0.4	-37
	South Central	3.2	2.2	-30
	Southeast	4.7	2.0	-59
Total Deposition of Sulfur (kg-S/ha)	Mid-Atlantic	18	3.0	-83
	Midwest	13	3.3	-74
	North Central	3.9	2.1	-48
	Northeast	11	2.4	-78
	Pacific	1.1	0.7	-42
	Rocky Mountain	1.4	0.8	-40
	South Central	4.9	3.0	-39
	Southeast	9.4	2.8	-70