Measurement	Region	Annual Average, 2000–2002	Annual Average, 2019–2021	Percent Change
Dry Nitrogen Deposition (kg-N/ha)	Mid-Atlantic	8.4	4.8	-43
	Midwest	6.3	4.6	-27
	North Central	4.1	4.7	14
	Northeast	5.5	2.9	-47
	Pacific	2.7	2.2	-18
	Rocky Mountain	1.5	1.6	5
	South Central	4.3	5.3	22
	Southeast	6.8	4.9	-29
Wet Nitrogen Deposition (kg-N/ha)	Mid-Atlantic	5.0	3.7	-25
	Midwest	5.9	5.2	-12
	North Central	4.4	4.8	8
	Northeast	4.9	3.3	-32
	Pacific	1.1	0.9	-17
	Rocky Mountain	1.5	1.5	1
	South Central	3.5	3.8	8
	Southeast	4.0	3.6	-11
Total Deposition of Nitrogen (kg-N/ha)	Mid-Atlantic	13.4	8.5	-36
	Midwest	12.2	9.8	-20
	North Central	8.5	9.5	11
	Northeast	10.4	6.2	-40
	Pacific	3.8	3.1	-18
	Rocky Mountain	3.0	3.1	3
	South Central	7.8	9.0	16
	Southeast	10.8	8.4	-22
Total Deposition of Oxidized Nitrogen (kg-N/ha)	Mid-Atlantic	10.3	4.0	-62
	Midwest	8.0	3.6	-54
	North Central	4.1	2.6	-37
	Northeast	7.7	2.9	-62
	Pacific	2.4	1.4	-42
	Rocky Mountain	1.9	1.3	-35
	South Central	5.0	3.1	-39
	Southeast	7.7	3.4	-56
Total Deposition of Reduced Nitrogen (kg-N/ha)	Mid-Atlantic	3.0	4.6	51
	Midwest	4.3	6.2	45
	North Central	4.4	6.9	56
	Northeast	2.7	3.3	22
	Pacific	1.4	1.7	22
	Rocky Mountain	1.1	1.8	72
	South Central	2.8	6.0	111
	Southeast	3.1	5.0	63
Dry Sulfur Deposition (kg-S/ha)	Mid-Atlantic	10	0.7	-93
	Midwest	5.9	0.6	-90
	North Central	1.3	0.4	-70
	Northeast	3.7	0.4	-90
	Pacific	0.4	0.3	-30
	Rocky Mountain	0.3	0.2	-42
	South Central	2.2	0.7	-67
	Southeast	5.5	0.7	-87
Wet Sulfur Deposition (kg-S/ha)	Mid-Atlantic	6.1	1.4	-77
	Midwest	5.3	1.6	-69
	North Central	2.2	1.2	-48
	Northeast	5.0	1.1	-77
	Pacific	0.5	0.3	-46
	Rocky Mountain	0.7	0.4	-47
	South Central	3.2	2.1	-36
	Southeast	4.8	2.0	-59
Total Deposition of Sulfur (kg-S/ha)	Mid-Atlantic	15.9	2.1	-87
	Midwest	11.2	2.2	-80
	North Central	3.5	1.5	-56
	Northeast	8.7	1.5	-83
	Pacific	1.0	0.6	-38
	Rocky Mountain	1.0	0.6	-46
	South Central	5.4	2.8	-49
	Southeast	10.3	2.6	-74