Scientific Investigations Report 2006–5137

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5137

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Table 2. Percentage of area occupied by nitrogen source types in each zone of the study area, south-central Idaho.

{Percentage of area in square miles (mi2).

Zone Zone
Area
(mi2)		 Fertilizer Septic Legumes Beef
Cattle		 Dairy
Cattle
1 193 82 3 79 79 82
2 76 87 0 87 87 48
3 128 46 1 44 44 83
4 221 25 0 25 25 30
5 106 93 6 87 87 83
6 1,407 9 0 9 0 0
7 149 21 0 20 20 43
8 200 21 0 20 20 60
9 52 4 0 4 4 15
10 532 4 0 3 3 9
11 59 38 0 38 38 54
12 60 79 5 74 74 96
13 79 78 3 75 75 96
14 130 71 2 69 69 97
15 292 24 1 24 22 42
16 53 79 9 70 70 28
17 147 79 1 78 78 89
18 151 71 1 70 70 22
19 101 86 3 83 83 85
20 440 12 0 12 12 2
21 217 82 0 82 82 80
22 103 74 5 70 70 82
23 90 25 0 25 25 45
24 163 35 0 34 34 56
25 164 26 0 26 26 18
26 27 72 4 68 68 50

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