Online-only Table 1 Curve numbers (CN) for hydrological soil groups (HSG) (A, B, C, and D) for ESA CCI land cover (LC) classes and their PFT decomposition percentages.

From: GCN250, new global gridded curve numbers for hydrologic modeling and design

LC ID LC Name Tree Shrub Grass Bare soil Water CN for HSG
Br. Ev. Br. De. Ne. Ev. Ne. De. Br. Ev. Br. De. Ne. Ev. Ne. De. Natural Managed A B C D
0 No Data              NA NA NA NA
10 Cropland, rainfed           100    57 68 75 78
11 Herbaceous cover           100    57 68 75 78
12 Tree or shrub cover       50     50    49 65 75 79
20 Cropland, irrigated or post‐floodinga           100    61 71 77 80
30 Mosaic cropland (>50%)/natural vegetation (tree, shrub, herbaceous cover) (<50%) 5 5    5 5 5   15 60    49 64 74 79
40 Mosaic natural vegetation (tree, shrub, herbaceous cover) (>50%)/cropland (<50%) 5 5    7.5 10 7.5   25 40    46 63 74 79
50 Tree cover, Br., Ev., closed to open (>15%) 90     5 5        31 56 70 77
60 Tree cover, Br., De., closed to open (>15%)   70     15    15     35 59 72 79
61 Tree cover, Br., De., closed (>40%)   70     15    15     35 59 72 79
62 Tree cover, Br., De., open (15‐40%)   30     25    35   10   42 63 75 81
70 Tree cover, Ne., Ev., closed to open (>15%)    70   5 5 5   15     35 59 72 79
71 Tree cover, Ne., Ev., closed (>40%)    70   5 5 5   15     35 59 72 79
72 Tree cover, Ne., Ev., open (15‐40%)    30    5 5   30   30   49 68 78 84
80 Tree cover, Ne., De., closed to open (>15%)     70 5 5 5   15     44 64 76 82
81 Tree cover, Ne., De., closed (>40%)     70 5 5 5   15     44 64 76 82
82 Tree cover, Ne., De., open (15‐40%)     30   5 5   30   30   53 70 80 85
90 Tree cover, mixed leaf type (Br. and Ne.)   30 20 10 5 5 5   15   10   41 62 75 81
100 Mosaic tree & shrub (>50%)/herbaceous cover (<50%) 10 20 5 5 5 10 5   40     37 60 73 79
110 Mosaic herbaceous cover (>50%)/tree & shrub (<50%) 5 10 5   5 10 5   60     38 60 73 80
120 Shrubland      20 20 20   20   20   48 66 77 83
121 Evergreen shrubland      30   30   20   20   48 65 77 83
122 Deciduous shrubland       60    20   20   48 67 78 83
130 Grassland          60   40   54 71 81 86
140 Lichens and mosses          60   40   54 71 81 86
150 Sparse vegetation (tree, shrub, herbaceous cover) (<15%) 1 3 1   1 3 1   5   85   71 82 88 92
152 Sparse shrub (<15%)      2 6 2   5   85   72 82 88 92
153 Sparse herbaceous cover (<15%)          15   85   71 82 88 92
160 Tree cover, flooded, fresh or brackish water 30 30        20    20 47 66 77 83
170 Tree cover, flooded, saline water 60     20        20 46 65 76 82
180 Shrub or herbaceous cover, flooded, fresh/saline/brackish water   5 10    10 5   40    30 57 72 82 86
190 Urban areas   2.5 2.5       15   75 5 70 82 88 91
200 Bare areasb            100   77 86 91 94
201 Consolidated bare areasc            100   85 90 93 94
202 Unconsolidated bare areasb            100   77 86 91 94
210 Water bodies             100 NA NA NA NA
220 Permanent snow and ice              NA NA NA NA
255 No Data              NA NA NA NA
  1. Br. = broadleaf; Ne. = needle leaf; Ev. = evergreen; De. = deciduous. A, B, C, and D are the hydrological soil groups; LC ID corresponds to Landcover ID in ESA-CCI LC dataset.
  2. aCN values are the average of poor hydrologic conditions for all cropland types.
  3. bCN values are from NEH-630 (fallow barren)’.
  4. cCN values are the average of impervious areas from NEH-630.