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Name	What	Region	Country	Lat	Long	Elev ft.	Pop est
Río Macho	city	Cartago	Costa Rica	9.78	-83.84	3713	27646
Río Malo	city	Casanare	Colombia	5.74	-71.80	830	3076
Río Manso	city	Oaxaca	Mexico	17.72	-95.90	164	2582
Río Manteca	city	Oaxaca	Mexico	16.80	-97.21	6709	43
Río Manteca	city	Oaxaca	Mexico	16.37	-97.39	5029	4689
Río Mar	city	Piura	Peru	-4.53	-80.48	830	1228
Río Mayer	city	Aysen	Chile	-48.27	-72.35	1669	0
Río Mayo	city	Chubut	Argentina	-45.69	-70.26	1669	2340
Río Mayo	city	Baja California Sur	Mexico	25.20	-111.83	104	1229
Río Mañón	city	Asturias	Spain	43.10	-5.58	2795	4393
Río Medio	city	Veracruz	Mexico	19.21	-96.20	55	276099
Río Medio	city	Veracruz	Mexico	19.28	-96.43	328	13784
Río Metate	city	Oaxaca	Mexico	16.31	-97.40	2509	5402
Río Mico	city	Oaxaca	Mexico	16.63	-94.73	830	3595
Río Miel	city	Colon	Honduras	15.90	-85.28	0	332
Río Mina	city	Oaxaca	Mexico	16.76	-96.01	4215	1341
Río Mina	city	Oaxaca	Mexico	16.74	-96.00	5029	1341
Río Minas	city	Oaxaca	Mexico	16.94	-97.24	5029	1419
Río Molino	city	Oaxaca	Mexico	16.21	-96.47	7549	4650
Río Molino	city	Oaxaca	Mexico	16.13	-96.40	7549	3436
Río Morona	city	Morona-Santiago	Ecuador	-2.89	-77.69	980	289
Río Muerto	city	Chaco	Argentina	-26.30	-61.68	830	3148
Río Muerto	city	Sonora	Mexico	27.42	-110.25	52	1043
Río Mulatos	city	Potosi	Bolivia	-19.70	-66.78	12588	298
Río Murta Airport	airport			-46.45	-72.69	600	0
Río Muñoz	city	Los Santos	Panama	7.62	-80.10	91	1281