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Calidad del agua en estaciones seleccionadas del Río Bravo |
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Concepto |
Unidades |
1990 |
1995 |
2000 |
2006 |
2007 |
2008 |
2009 |
2010 |
2011 |
2012 |
2013 |
2014 |
2015 |
2016 |
2017 |
2018 |
2019 |
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Estación de medición |
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Nombre |
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Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
Puente Viejo Matamoros |
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Distancia a la desembocadura |
km |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
58 |
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Frecuencia de muestreo anual |
Número |
12 |
5 |
6 |
3 |
3 |
3 |
3 |
3 |
2 |
3 |
6 |
6 |
6 |
6 |
6 |
6 |
1 |
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Parámetros (mediana anual) |
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Temperatura |
°C |
25 |
20 |
25 |
30.5 |
27.7 |
26.8 |
23.9 |
23.9 |
24.45 |
24.92 |
29.4 |
30.5 |
25.1 |
25.55 |
31.7 |
28.9 |
24 |
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Acidez |
pH |
7 |
nd |
nd |
7.975 |
7.75 |
7.77 |
7.93 |
7.93 |
7.995 |
8.79 |
8.62 |
8 |
8.15 |
8 |
8.3 |
8.2 |
8.4 |
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Oxígeno disuelto |
mg O2 / l |
6.2 |
7.6 |
7.88 |
7 |
7 |
8 |
8 |
8 |
7 |
8.82 |
9.39 |
8.15 |
6.725 |
5.82 |
7.32 |
5.21 |
7.4 |
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Saturación de oxígeno |
% |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
113.49 |
111.4 |
92.6 |
80.265 |
78.1 |
90.995 |
64.3 |
84 |
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DBO (20°C 5d) |
mg O2/ l |
3.92 |
3.66 |
2.28 |
3.65 |
3.75 |
4.12 |
9.29 |
9.29 |
8.6 |
10.3 |
4.1 |
3.9 |
2.38 |
3.97 |
3.07 |
<2 |
<2 |
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DQO (K2Cr2O7) |
mg O2/ l |
40.2 |
15 |
14 |
23 |
13 |
23 |
20.06 |
20.06 |
18.48 |
69.555 |
70.12 |
32.94 |
20.61 |
12.42 |
22.03 |
29.035 |
14.25 |
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Sólidos suspendidos |
mg/ l |
55 |
53 |
5 |
nd |
26 |
42 |
67 |
67 |
51.5 |
53 |
100 |
39.5 |
37.5 |
44.5 |
65.5 |
43 |
24 |
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Sólidos disueltos |
mg/ l |
961 |
1040 |
815 |
nd |
777 |
943.00 |
1080 |
1080 |
895 |
720.64 |
799.5712 |
761.28 |
1180.16 |
922.24 |
884.16 |
868.16 |
819.2 |
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Nitrógeno total |
mg N/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
1.61 |
0.8175 |
1.492 |
1.3658335 |
1.3628 |
0.462 |
0.266 |
0.336 |
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Nitratos |
mg NO3/ l |
0.133 |
0.2 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
0.366 |
<0.004 |
0.157 |
0.0283235 |
<0.004 |
0.0545 |
0.0155 |
0.091 |
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Amonio |
mg NH4/ l |
0.027 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
0.855 |
0.057193593 |
0.141188335 |
0.064671529 |
0.074772438 |
0.109095808 |
0.118549321 |
0.002648582 |
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Fósforo total |
mg P/ l |
nd |
nd |
nd |
0.397 |
0.452 |
0.23 |
<0.3 |
<0.3 |
<0.300 |
<0.001 |
0.0615 |
0.15 |
0.2036 |
0.077 |
0.1089 |
0.0855 |
0.1535 |
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Ortofosfatos |
mg P/ l |
nd |
0.08 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.001 |
0.0108 |
0.0395 |
0.0406 |
0.00475 |
0.0873 |
0.0005 |
0.1077 |
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Coliformes fecales |
NMP/100 ml |
nd |
764 |
nd |
nd |
26 |
280 |
173 |
173 |
1,109 |
93 |
166.5 |
3162 |
4358.5 |
5806 |
930 |
1800 |
210 |
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Arsénico total |
mg As/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
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Cadmio total |
mg Cd/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.00023 |
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Cromo total |
mg Cr/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00088 |
0.0056 |
<0.00088 |
<0.00088 |
<0.00088 |
<0.00088 |
0.02906 |
<0.00088 |
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Cobre total |
mg Cu/ l |
nd |
nd |
nd |
<0.035 |
<0.05 |
<0.05 |
<0.05 |
<0.050 |
<0.050 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
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Plomo total |
mg Pb/ l |
nd |
nd |
nd |
<0.23 |
nd |
nd |
nd |
nd |
nd |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
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Mercurio total |
mg Hg/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00009 |
0.00131 |
<0.00009 |
<0.00009 |
<0.00009 |
<0.00009 |
<0.00009 |
<0.00009 |
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Níquel total |
mg Ni/ l |
nd |
nd |
nd |
<0.121 |
<0.121 |
<0.121 |
<0.121 |
<0.121 |
<0.121 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
0.00272 |
0.00339 |
0.001529 |
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Zinc total |
mg Zn/ l |
nd |
nd |
nd |
<0.05 |
nd |
<0.050 |
<0.050 |
<0.050 |
<0.050 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
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Notas: |
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La fuente reporta los datos con medianas en vez de promedios debido a la alta sensibilidad de los promedios a los valores extremos. |
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Ubicación geográfica de la estación de medición,PuenteViejo Matamoros : 25º 53´ 00" lat. N; 97º 30´ 30" long. W. |
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nd. No disponible |
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Fuente: |
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Comisión Nacional del Agua, Gerencia de Calidad del Agua, Junio 2020 |
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