Table 7.   Subbasin runoff curve numbers. Topological number Subbasin Land use Hydrologic condition Aerial % Hydrologic soil group Aerial weighted CN B C D Aerial % CN Aerial % CN Aerial % CN 1 Quebrada Pichucirca impermeable (rock) - 40 0 85 10 89 30 91 79 woodland/grassland good 50 15 58 30 72 5 79 cropland good 10 5 78 5 85 0 89 2 Quebrada de Tembladera impermeable (rock) - 45 0 85 15 89 30 91 80 woodland/grassland good 30 15 58 15 72 0 79 cropland good 25 15 78 10 85 0 89 3 Quebrada de Punguyjo impermeable (rock) - 50 0 85 10 89 40 91 81 woodland/grassland good 30 15 58 15 72 0 79 cropland good 20 10 78 10 85 0 89 4 Quebrada Los Cuartos impermeable (rock) - 50 0 85 10 89 40 91 80 woodland/grassland good 35 20 58 15 72 0 79 cropland good 15 5 78 10 85 0 89 5 Quebrada de Cascabamba impermeable (rock) - 25 0 85 5 89 20 91 74 woodland/grassland good 60 30 58 30 72 0 79 cropland good 15 5 78 10 85 0 89 6 Quebrada Huanga Changa impermeable (rock) - 30 0 85 5 89 25 91 77 woodland/grassland fair 50 35 65 15 76 0 82 cropland good 20 15 78 5 85 0 89 7 Río Moyán 0 impermeable (rock) - 60 0 85 15 89 45 91 84 woodland/grassland good 20 10 58 10 72 0 79 cropland good 20 10 78 10 85 0 89 8 Quebrada Cincate (Colán) impermeable (rock) - 40 0 85 10 89 30 91 82 woodland/grassland poor 50 35 73 15 82 0 86 cropland good 10 5 78 5 85 0 89 9 Río Sangana 0 impermeable (rock) - 45 0 85 10 89 35 91 79 woodland/grassland good 35 20 58 15 72 0 79 cropland good 20 10 78 10 85 0 89

Table 7a.   Subbasin runoff curve numbers (continued). Topological number Subbasin Land use Hydrologic condition Aerial % Hydrologic soil group Aerial weighted CN B C D Aerial % CN Aerial % CN Aerial % CN 10101 Quebrada Pichucirca impermeable (rock) - 30 0 85 5 89 25 91 80 woodland/grassland fair 50 15 65 30 76 5 82 cropland good 20 10 78 10 85 0 89 10201 Quebrada de Tembladera impermeable (rock) - 40 0 85 10 89 30 91 82 woodland/grassland good 20 10 58 10 72 0 79 cropland good 40 20 78 20 85 0 89 10301 Quebrada Rachichuela impermeable (rock) - 70 0 85 15 89 55 91 86 woodland/grassland good 15 5 58 10 72 0 79 cropland good 15 5 78 10 85 0 89 20101 Río Chauchaquis impermeable (rock) - 50 0 85 10 89 40 91 81 woodland/grassland good 30 15 58 15 72 0 79 cropland good 20 10 78 10 85 0 89 20201 Río Cascabamba (Nieves) impermeable (rock) - 45 0 85 10 89 35 91 82 woodland/grassland fair 30 15 65 15 76 0 82 cropland good 25 10 78 15 85 0 89 20301 Quebrada del Verde impermeable (rock) - 30 0 85 5 89 25 91 80 woodland/grassland fair 30 20 65 10 76 0 82 cropland good 40 25 78 15 85 0 89 20302 Río Tocmoche impermeable (rock) - 20 0 85 5 89 15 91 75 woodland/grassland fair 60 40 65 20 76 0 82 cropland good 20 15 78 5 85 0 89 20401 Río Moyán 1 impermeable (rock) - 60 0 85 10 89 50 91 83 woodland/grassland good 20 15 58 5 72 0 79 cropland good 20 10 78 10 85 0 89 20402 Río Moyán 2 impermeable (rock) - 50 0 85 10 89 40 91 80 woodland/grassland good 30 20 58 10 72 0 79 cropland good 20 10 78 10 85 0 89

Table 7b.   Subbasin runoff curve numbers (continued). Topological number Subbasin Land use Hydrologic condition Aerial % Hydrologic soil group Aerial weighted CN B C D Aerial % CN Aerial % CN Aerial % CN 20403 Río Moyán 3 impermeable (rock) - 30 0 85 5 89 25 91 78 woodland/grassland fair 45 30 65 15 76 0 82 cropland good 25 15 78 10 85 0 89 20501 Quebrada Cincate (Colán) impermeable (rock) - 25 0 85 5 89 20 91 81 woodland/grassland poor 50 35 73 15 82 0 86 cropland good 25 15 78 10 85 0 89 30101 Río Sangana 1 impermeable (rock) - 50 0 85 10 89 40 91 81 woodland/grassland good 30 15 58 15 72 0 79 cropland good 20 10 78 10 85 0 89 30102 Río Sangana 2 impermeable (rock) - 50 0 85 10 89 40 91 79 woodland/grassland good 40 20 58 20 72 0 79 cropland good 10 5 78 5 85 0 89 30103 Río Sangana 3 impermeable (rock) - 30 0 85 5 89 25 91 79 woodland/grassland fair 50 25 65 25 76 0 82 cropland good 20 10 78 10 85 0 89 30104 Río Sangana 4 impermeable (rock) - 30 0 85 5 89 25 91 78 woodland/grassland fair 65 30 65 35 76 0 82 cropland good 5 0 78 5 85 0 89 30105 Río La Leche 1 impermeable (rock) - 30 0 85 5 89 25 91 83 woodland/grassland poor 45 20 73 25 82 0 86 cropland good 25 15 78 10 85 0 89 30106 Río La Leche 2 impermeable (rock) - 30 0 85 5 89 25 91 83 woodland/grassland poor 45 20 73 25 82 0 86 cropland good 25 15 78 10 85 0 89 Basinwide Río La Leche - - - - - - - - - 80