Concepto | Unidades | 1990 | 1995 | 2000 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 |
Estación de medición | |||||||||||||
Nombre | Puente Briseñas |
Puente Briseñas |
La Palmita Maltaraña, Jalisco | La Palmita Maltaraña, Jalisco | La Palmita Maltaraña, Jalisco | La Palmita Maltaraña, Jalisco | La Palmita Maltaraña, Jalisco | La Palmita Maltaraña, Jalisco | La Palmita Maltaraña, Jalisco | La Palmita Maltaraña, Jalisco | Río Lerma en Maltaraña | Río Lerma en Maltaraña | |
Distancia a la desembocadura | km | 22 | 22 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Frecuencia de muestreo anual | Número | 3 | 3 | 3 | 6 | 9 | 9 | 6 | 8 | 8 | 7 | 2 | 5 |
Parámetros (promedio anual) | |||||||||||||
Temperatura | °C | 20.3 | 24 | 22.3 | 22.6 | 24.76 | 23.92 | 24.02 | 24.64 | 25.14 | 25.51 | 19.34 | 23.06 |
Acidez | pH | 7.8 | 7.7 | 7.5 | 7.91 | 7.27 | 7.36 | 7 | 6.92 | 7.69 | 7.62 | 7.92 | 7.71 |
Oxígeno disuelto | mg O2 / l | 2.4 | nd | 2.21 | 4.43 | 2.93 | 4.35 | 4.34 | 3.99 | 4.87 | 3.89 | 4.24 | 2.58 |
Saturación de oxígeno | % | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | 68.8 | 38.71 |
DBO (20°C 5d) | mg O2/ l | 13.50 | nd | 30 | 4.2 | 7.3 | 4.43 | 17.05 | 8.23 | 10.63 | 13.52 | 5.88 | 11.26 |
DQO (K2Cr2O7) | mg O2/ l | nd | nd | 63.5 | 47 | 78.83 | 43.67 | 94.33 | 36.87 | 52.8 | 49.21 | 22.61 | 103.8 |
Sólidos suspendidos | mg/ l | nd | nd | 40 | 55.3 | 64.57 | 65.44 | 96 | 67.67 | 77.25 | 78 | 53.5 | 190.44 |
Sólidos disueltos | mg/ l | nd | nd | 500.67 | 359.33 | 381.71 | 463.44 | 433.25 | 466.67 | 412.5 | 502.33 | 280 | 327.3 |
Nitrógeno total | mg N/ l | nd | nd | nd | nd | nd | nd | nd | nd | 5.35 | 2.97 | 1.33 | 5.53 |
Nitratos | mg NO3/ l | 0.44 | nd | 0.55 | 0.73 | 1.45 | 6.9 | 7.21 | 10.24 | 2.15 | 0.39 | 1.28 | 10.88 |
Amonio | mg NH4/ l | nd | nd | nd | 0.4 | 3.195 | 0.65 | 0.84 | 1.39 | 1.74 | 0.63 | 0.97 | 2.08 |
Fósforo total | mg P/ l | nd | nd | 2.36 | 1.13 | nd | nd | nd | 0.75 | 1.24 | 1.16 | 0.54 | 1.22 |
Ortofosfatos | mg P/ l | nd | nd | 2.83 | 1.04 | 1.29 | 0.89 | 1.04 | 0.65 | 0.94 | 0.7 | 0.4 | 0.85 |
Coliformes fecales | NMP/100 ml | nd | nd | 4,017 | nd | nd | nd | 120,000 | 187,337 | 4,346 | 344 | 9,855 | 14,309 |
Arsénico total | mg As/ l | nd | nd | nd | nd | nd | nd | nd | nd | <0.005 | 0.01 | <0.00139 | <0.00139 |
Cadmio total | mg Cd/ l | nd | nd | nd | nd | nd | nd | nd | <0.001 | <0.001 | <0.00058 | <0.00015 | <0.00015 |
Cromo total | mg Cr/ l | nd | nd | nd | nd | nd | nd | nd | <0.05 | <0.05 | <0.05 | 0.0043 | 0.013 |
Cobre total | mg Cu/ l | nd | nd | nd | nd | nd | nd | nd | nd | <0.1 | nd | nd | nd |
Plomo total | mg Pb/ l | nd | nd | nd | nd | nd | nd | nd | nd | <0.005 | 0.01 | <0.00154 | <0.00154 |
Mercurio total | mg Hg/ l | nd | nd | nd | nd | nd | nd | nd | nd | <0.001 | <0.00057 | <0.00005 | 0.00066 |
Níquel total | mg Ni/ l | nd | nd | nd | nd | nd | nd | nd | nd | <0.1 | <0.1 | <0.00015 | 0.007 |
Zinc total | mg Zn/ l | nd | nd | nd | nd | nd | nd | nd | nd | 0.1 | 0.09 | nd | nd |
Cianuros | mg CN/ l | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | 0.01 |
Notas: | |||||||||||||
Ubicación geográfica de las estaciones de medición. Puente Briseñas: 20º 17´ 30" lat. N; 102º 32´ 00" long. W; La Palmita Maltaraña, Jalisco: 20° 13' 00'' lat. N; 102° 40' 60'' long. W (esta estación cambió de nombre a Río Lerma en Maltaraña, tal como se presenta al final de la serie). | |||||||||||||
nd. No disponible | |||||||||||||
Fuente: | |||||||||||||
Comisión Nacional del Agua, Gerencia de Calidad del Agua, Febrero 2015 |