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1921. Rio Huayllapa (7.96S, 77.64W) La Libertad, Stream 1922. Rio Huayllapampa (10.17S, 77.53W) Ancash, Stream 1923. Rio Huayllapana (15.07S, 72.89W) Arequipa, Stream 1924. Rio Huayruro (9.98S, 75.62W) Huanuco, Stream 1925. Rio Huaytamayo (15.24S, 72.08W) Arequipa, Stream 1926. Rio Huaytara (13.58S, 75.53W) Huancavelica, Stream 1927. Rio Huayup (9.97S, 77.85W) Ancash, Stream 1928. Rio Huccacpaccha (13.9S, 74.9W) Huancavelica, Stream 1929. Rio Hueco (16.5S, 70.07W) Puno, Stream 1930. Rio Huenque (16.2S, 69.73W) Puno, Stream 1931. Rio Huepetue (12.75S, 70.57W) Madre de Dios, Stream 1932. Rio Huertas (7.22S, 78.83W) Cajamarca, Stream 1933. Rio Huertas (10.1S, 76.15W) , Stream 1934. Rio Huiccocho (14.23S, 73.61W) Ayacucho, Stream 1935. Rio Huichunga (12.98S, 75.5W) Huancavelica, Stream 1936. Rio Huilane (15.1S, 73.83W) Ayacucho, Stream 1937. Rio Huillototora (14.37S, 72.1W) Cusco, Stream 1938. Rio Huilluca (13.22S, 71.65W) Cusco, Stream 1939. Rio Huipaya (11.47S, 73.12W) Cusco, Stream 1940. Rio Huiraccocha (13.32S, 73.62W) Ayacucho, Stream 1941. Rio Huiracocha (12.92S, 75.8W) Lima, Intermittent Stream 1942. Rio Huisca (14.11S, 73.8W) Ayacucho, Stream 1943. Rio Huitara (13.58S, 75.53W) Huancavelica, Stream 1944. Rio Huitiricaya (11.38S, 73.08W) Cusco, Stream 1945. Rio Huito-yaco (4.15S, 76.57W) Loreto, Stream 1946. Rio Huitoyacu (4.15S, 76.57W) Loreto, Stream 1947. Rio Huiyo-Yacu (3.77S, 74.57W) , Stream 1948. Rio Humaita (7.15S, 74.07W) Loreto, Stream 1949. Rio Humalso (16.95S, 69.7W) Puno, Stream 1950. Rio Humayta (7.15S, 74.07W) Loreto, Stream 1951. Rio Humn Apacheta (13.9S, 69.57W) Puno, Stream 1952. Rio Humn-Apacheia (13.9S, 69.57W) Puno, Stream 1953. Rio Humullo (14.97S, 69.72W) Puno, Stream 1954. Rio Huncalle (14.98S, 74.35W) Ayacucho, Stream 1955. Rio Hunga-yacu (5.23S, 77.03W) Loreto, Stream 1956. Rio Hungu-yacu (5.23S, 77.03W) Loreto, Stream 1957. Rio Hutchinga (12.98S, 75.5W) Huancavelica, Stream 1958. Rio Hututopucro (10.67S, 76.55W) Pasco, Stream 1959. Rio Ica (13.78S, 75.38W) , Stream 1960. Rio Ica (14.87S, 75.56W) Ica, Intermittent Stream | 1961. Rio Ichocollo (15.51S, 71.53W) Arequipa, Stream 1962. Rio Ichocollo (15.64S, 70.88W) Puno, Stream 1963. Rio Ichucana (14.93S, 71.82W) Arequipa, Stream 1964. Rio Ichuna (16.17S, 70.67W) Moquegua, Stream 1965. Rio Ichupalla (14.92S, 69.87W) Puno, Stream 1966. Rio Ichurata (15.2S, 72.38W) Arequipa, Stream 1967. Rio Ichuruta (15.2S, 72.38W) Arequipa, Stream 1968. Rio Ihuari (11.17S, 76.99W) Lima, Stream 1969. Rio Ilabaya (17.47S, 70.54W) Tacna, Stream 1970. Rio Ilave (16S, 69.45W) Puno, Stream 1971. Rio Illigua (15.23S, 72.07W) Arequipa, Stream 1972. Rio Imaza (5.41S, 78.1W) Amazonas, Stream 1973. Rio Imaza (5.41S, 78.1W) Amazonas, Stream 1974. Rio Ina (13.45S, 69.43W) Puno, Stream 1975. Rio Inamapuya (8.75S, 74.13W) Ucayali, Stream 1976. Rio Inambari (12.5S, 69.08W) Madre de Dios, Stream 1977. Rio Incahuasi (14.73S, 74.38W) Ayacucho, Stream 1978. Rio Inchipachiari (10.62S, 73.95W) Ucayali, Stream 1979. Rio Inchupalla (14.92S, 69.87W) Puno, Stream 1980. Rio Independencia (10.1S, 72.38W) Ucayali, Stream 1981. Rio Indio Muerto (15.8S, 74.23W) Arequipa, Intermittent Stream 1982. Rio Ingahuasi (14.05S, 74.53W) Ayacucho, Stream 1983. Rio Ingarata (10.15S, 75.18W) Pasco, Stream 1984. Rio Ingenio (14.65S, 75.24W) , Stream 1985. Rio Ingrata (10.15S, 75.18W) Pasco, Stream 1986. Rio Ingueryacu (6.21S, 79.05W) Cajamarca, Stream 1987. Rio Inguisilla (0.78S, 74.37W) Loreto, Stream 1988. Rio Inipallca (14.08S, 74.32W) Ayacucho, Stream 1989. Rio Inscunlas (5.79S, 79.88W) Lambayeque, Intermittent Stream 1990. Rio Intiyacu (7.05S, 76.57W) San Martin, Stream 1991. Rio Inuya (10.68S, 73.5W) Ucayali, Stream 1992. Rio Ipactia (7.28S, 75.07W) Loreto, Stream 1993. Rio Iparia (9.3S, 74.53W) Ucayali, Stream 1994. Rio Ipochuti (12.22S, 73W) Cusco, Stream 1995. Rio Ipoqui (10.98S, 74.77W) Junin, Stream 1996. Rio Ipora (2.75S, 70.4W) Loreto, Stream 1997. Rio Ipugui (10.98S, 74.77W) Junin, Stream 1998. Rio Iquinacha (14.38S, 72.18W) Cusco, Stream 1999. Rio Irubamba (14.16S, 71.17W) Cusco, Stream 2000. Rio Iruro (14.47S, 74.28W) Ayacucho, Stream |