Cuenca del rio grijalva cuenca del rio usumacinta riopais mexico guatemala total por rios grijalva 52,348. Below the mayan ruins of piedras negras in guatemala, the river begins its meandering course through the swampy lowlands of the southern shores of the bay of campeche. Map of potential erosion in the grijalvausumacinta hydrological basin, mexico, using gis. Tarebia granifera lamarck, 1822 in hydrologic region grijalvausumacinta in tabasco, mexico. Pdf this chapter discusses the physical and biological features of five major mexican riversthe rio panuco, usumacintagrijalva rivers, rio. Region grijalva y region usumacinta tabasco trabajos. Region grijalva y region usumacinta tabasco enviado por. Canon del sumidero 15 dec2008 rios grijalva y usumacinta xi frontera sur.