Table 3 Comparison of curve number (CN) values generated by GCN250 and CN reported in the literature for several basins.

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

Basin Basin area (km2) CN (Zeng, et al.5) CN GCN250 (dry) CN GCN250 (average) CN GCN250 (wet)
Mississippi 5,649,686 72.0 59.3 77.0 89.3
Colorado 1,042,765 66.5 56.5 74.7 87.6
Sacramento 208,954 74.1 56.2 74.3 87.4
Yangtze 2,279,818 69.2 57.2 75.3 88.3
Mekong 905,344 69.2 57.7 75.8 88.6
Amazon 6,179,569 64.5 57.5 75.6 88.3
Uruguay 458,115 76.2 63.5 80.1 91.1