Evapotranspiración real para aguaymanto (mm/mes)(Método de Hargreaves)

Proyecto: Latitud: 09°40.3' SLongitud: 77°10.2' WAltitud: 3702 msnm

Descripción de variables Ene Feb Mar Abr May Jun Jul Ago Set Oct Nov DicT (°C) 9.5 8.1 9.0 11.7 12.2 11.8 11.3 11.3 11.5 13.4 10.6 10.9TMF (°F) 49.1 46.5 48.3 53.0 54.0 53.2 52.3 52.3 52.7 56.1 51.1 51.6MF (Valor tabular) 2.6 2.3 2.4 2.0 1.9 1.7 1.8 2.0 2.2 2.5 2.5 2.6%HR 54.4 46.1 51.7 66.7 69.8 67.5 64.5 64.5 65.7 76.7 60.7 62.4

1.00 1.00 1.00 0.96 0.91 0.95 0.99 0.99 0.97 0.80 1.00 1.00CE = 1+ 0.04(Z/2000) 1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07 1.07ETP = MF*TMF*CH*CE (mm/mes) 134.9 112.9 122.2 111.7 99.1 91.5 100.0 111.7 120.7 118.8 135.3 142.3

Descripción Ene Feb Mar Abr May Jun Jul Ago Set Oct Nov Dic0.30 0.52 0.75 0.80 0.90 0.90 0.80 0.75

Area quinua (has) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.00.60 0.70 0.90 1.10 1.15 1.15 1.10 1.10 1.00 0.90 0.70 0.60

Area alfalfa (has) 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.00.50 0.64 0.85 1.00 1.07 1.07 1.00 0.98 1.00 0.90 0.70 0.60

Si HR > 64%, CH = 0.166(100-HR)1/2

Kc ponderado de los cultivos (mm/mes)

Kc quinua

Kc alfalfa (hás)

Kc ponderado

Caudal de demanda

Descripción Ene Feb Mar Abr May Jun Jul Ago Set Oct Nov Dic

Evapotranspiración potencial (mm), ETP 134.9 112.9 122.2 111.7 99.1 91.5 100.0 111.7 120.7 118.8 135.3 142.3

0.50 0.64 0.85 1.00 1.07 1.07 1.00 0.98 1.00 0.90 0.70 0.60

Uso consuntivo, UC (mm) 67.4 72.3 103.9 111.7 105.7 97.6 100.0 109.9 120.7 106.9 94.7 85.4

Precipitación efectiva 75 % de persistencia (mm), Pe 74.9 84.6 91.5 55.7 7.7 3.7 0.0 5.2 25.0 55.0 52.9 50.1

Requerimiento neto de agua, Rw = UC - Pe (mm) 0.00 0.00 12.34 56.04 98.02 93.94 100.03 104.71 95.70 51.84 41.79 35.33

0.0 0.0 123.4 560.4 980.2 939.4 1000.3 1047.1 957.0 518.4 417.9 353.3

Eficiencia de riego, Er 0.32 0.32 0.32 0.32 0.32 0.32 0.32 0.32 0.32 0.32 0.32 0.32

0.0 0.0 385.5 1751.4 3063.1 2935.5 3126.1 3272.2 2990.5 1619.8 1306.1 1104.1

Horas de riego por día, J 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0

Módulo de riego (L/s/ha), MR 0.00 0.00 0.14 0.68 1.14 1.13 1.17 1.22 1.15 0.60 0.50 0.41

Area total de la parcela, hás 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0 15.0

Caudal de demanda (l/s) 0.0 0.0 2.2 10.1 17.2 17.0 17.5 18.3 17.3 9.1 7.6 6.2

0.0000 0.0000 0.0022 0.0101 0.0172 0.0170 0.0175 0.0183 0.0173 0.0091 0.0076 0.0062

Coeficiente de cultivo ponderado, Kc

Requerimiento de agua en volumen (m3/há), Rnw

Requerimiento bruto de agua (m3/ha), Rbw = Rnw/Er

Caudal de demanda (m3/s)

Precipitaciones Totales Mensuales (mm)

Estación Chavín

Latitud: 09°35'S Longitud: 77°10.5'S Altitud: 3210 msnm

Año Ene Feb Mar Abr May Jun Jul Ago Set Oct Nov Dic

1980 107.7 160.8 165.6 57.9 2.4 1.0 7.3 20.4 0.0 168.1 246.0 135.2

1981 58.4 234.0 193.9 135.6 0.0 0.0 0.0 8.3 13.3 72.2 264.3 223.6

1982 46.2 193.6 150.0 62.9 0.2 8.2 0.2 8.8 50.4 155.6 219.7 210.8

1983 102.0 164.1 153.1 46.2 18.2 3.4 6.7 23.2 43.1 90.5 59.4 141.2

1984 128.4 180.2 108.6 130.9 32.9 31.9 9.7 4.4 6.9 58.4 49.0 53.1

1985 130.4 87.5 226.9 145.6 109.4 15.2 95.6 26.9 50.2 42.1 73.9 27.5

1986 153.4 94.5 60.5 103.0 29.0 3.7 16.6 13.0 70.7 111.1 103.8 31.6

1987 121.1 90.9 63.0 56.3 9.8 10.8 17.0 16.2 45.0 38.7 94.5 85.9

1988 164.3 93.4 98.3 134.3 24.4 0.0 0.0 0.0 44.9 66.5 43.9 63.8

1989 79.4 103.5 118.6 66.1 18.8 20.3 3.7 18.3 55.8 96.2 48.4 28.7

1990 85.5 95.4 102.3 42.8 28.6 34.2 8.7 0.0 51.9 145.5 115.8 94.8

1991 107.5 88.3 188.2 44.8 23.3 4.1 2.8 0.0 31.9 75.5 83.0 44.0

1992 52.5 66.5 98.8 27.7 0.0 5.5 3.4 26.4 23.5 63.2 76.1 40.6

1993 120.9 140.7 184.5 124.9 21.1 7.9 11.0 13.9 69.5 86.6 160.9 183.1

1994 167.1 175.8 157.9 89.5 22.7 13.4 0.0 0.0 48.2 57.6 52.9 80.1

1995 112.2 98.5 152.0 75.5 53.1 22.0 1.0 0.0 35.7 87.7 75.5 142.2

1996 107.9 141.8 147.1 139.6 34.0 2.6 0.0 19.5 22.9 41.7 33.9 60.3

Media 108.5 130.0 139.4 87.3 25.2 10.8 10.8 11.7 39.1 85.7 105.9 96.9

D. std. 36.0 47.7 46.6 40.5 26.0 10.7 22.6 9.8 20.3 39.4 72.8 64.4

Datos completados y extendidos

Fuente: Good Neighbours Consultants. Diagnóstico y Evaluación del Recurso Hídrico. 2008. (1964 -1985)

SENAMHI (1986 - 1996)

PRECIPITACION TOTAL MENSUAL (mm)

Area de riego

Región: Ancash Altitud 3702 msnm

Provincia: Huari PMA 880.6 (mm)

Distrito: Chavín

Año Ene Feb Mar Abr May Jun Jul Ago Set Oct Nov Dic

1980 111.4 166.3 171.3 59.9 2.5 1.0 7.6 21.1 0.0 173.9 254.5 139.9

1981 60.4 242.1 200.6 140.3 0.0 0.0 0.0 8.6 13.8 74.7 273.4 231.3

1982 47.8 200.3 155.2 65.1 0.2 8.5 0.2 9.1 52.1 161.0 227.3 218.1

1983 105.5 169.8 158.4 47.8 18.8 3.5 6.9 24.0 44.6 93.6 61.4 146.1

1984 132.8 186.4 112.3 135.4 34.0 33.0 10.0 4.6 7.1 60.4 50.7 54.9

1985 134.9 90.5 234.7 150.6 113.2 15.7 98.9 27.8 51.9 43.6 76.5 28.4

1986 158.7 97.8 62.6 106.6 30.0 3.8 17.2 13.4 73.1 114.9 107.4 32.7

1987 125.3 94.0 65.2 58.2 10.1 11.2 17.6 16.8 46.6 40.0 97.8 88.9

1988 170.0 96.6 101.7 138.9 25.2 0.0 0.0 0.0 46.4 68.8 45.4 66.0

1989 82.1 107.1 122.7 68.4 19.4 21.0 3.8 18.9 57.7 99.5 50.1 29.7

1990 88.5 98.7 105.8 44.3 29.6 35.4 9.0 0.0 53.7 150.5 119.8 98.1

1991 111.2 91.3 194.7 46.3 24.1 4.2 2.9 0.0 33.0 78.1 85.9 45.5

1992 54.3 68.8 102.2 28.7 0.0 5.7 3.5 27.3 24.3 65.4 78.7 42.0

1993 125.1 145.6 190.9 129.2 21.8 8.2 11.4 14.4 71.9 89.6 166.5 189.4

1994 172.9 181.9 163.3 92.6 23.5 13.9 0.0 0.0 49.9 59.6 54.7 82.9

1995 116.1 101.9 157.2 78.1 54.9 22.8 1.0 0.0 36.9 90.7 78.1 147.1

1996 111.6 146.7 152.2 144.4 35.2 2.7 0.0 20.2 23.7 43.1 35.1 62.4

Media 112.3 134.5 144.2 90.3 26.0 11.2 11.2 12.1 40.4 88.7 109.6 100.2

Std 37.2 49.4 48.2 41.9 26.9 11.0 23.3 10.2 21.0 40.7 75.3 66.6

P 75% 87.0 100.9 111.4 61.8 7.8 3.7 0.0 5.2 26.1 61.0 58.4 54.9

P efectiva 75% 74.9 84.6 91.5 55.7 7.7 3.7 0.0 5.2 25.0 55.0 52.9 50.1