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Legend (NPDAT/SPARROW)

SPARROW HUC8 (0)
SPARROW N 1992 HUC8 (1)
9 - 107 9 - 107
108 - 177 108 - 177
178 - 299 178 - 299
300 - 438 300 - 438
439 - 622 439 - 622
623 - 788 623 - 788
789 - 1045 789 - 1045
1046 - 1385 1046 - 1385
1386 - 1889 1386 - 1889
1900 - 6900 1900 - 6900
SPARROW Delivered N 1992 HUC8 (2)
0 - 1.9 0 - 1.9
2.0 - 14 2.0 - 14
15 - 38 15 - 38
39 - 155 39 - 155
156 - 336 156 - 336
337 - 487 337 - 487
488 - 663 488 - 663
664 - 885 664 - 885
886 - 1,270 886 - 1,270
1,271 - 5,540 1,271 - 5,540
SPARROW P 1992 HUC8 (3)
4 - 27 4 - 27
28 - 36 28 - 36
37 - 48 37 - 48
49 - 61 49 - 61
62 - 81 62 - 81
82 - 100 82 - 100
101 - 117 101 - 117
118 - 138 118 - 138
139 - 165 139 - 165
166 - 858 166 - 858
SPARROW Delivered P 1992 HUC8 (4)
0 - 0.04 0 - 0.04
0.05 - 0.30 0.05 - 0.30
0.31 - 2.21 0.31 - 2.21
2.22 - 9.11 2.22 - 9.11
9.12 - 20.6 9.12 - 20.6
20.7 - 38.3 20.7 - 38.3
38.4 - 63.6 38.4 - 63.6
63.7 - 88.6 63.7 - 88.6
88.7 - 119 88.7 - 119
120 - 540 120 - 540
SPARROW N 2002 MRB (5)
SPARROW P 2002 MRB (6)
SPARROW Major River Basins Total Nitrogen (7)
< 500 < 500
500 - 1,000 500 - 1,000
1,000 - 1,500 1,000 - 1,500
1,500 - 2,000 1,500 - 2,000
> 2,000 > 2,000
SPARROW Major River Basins Total Phosphorus (8)
< 50 < 50
50 - 100 50 - 100
100 - 150 100 - 150
150 - 200 150 - 200
> 200 > 200