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Gunnison (GU). Also, in the San Juan, Animas and Dolores (SA) the recent wet period after 1980 has not been as wet as the 1906-1930 period. The Rio Grande (RG) has a history quite different from the previous ones. Most of the area at the lower elevations have a precipitation maximum in July and August. The 3 month SPI shows several droughts in recent years including 1995-1996, 1980-1981, 1974, and 1972. At 12 month the 1995-1996 drought was the most significant since 1950-1952. Years in the late 1970s and the 1930s were not really dry. At longer time scales the most significant droughts were in the 1940s and 1950s as well as near the turn of the century. The recent wet period has not been as wet as the 1905-1925 period. The South Platte drainage (Upper and Lower) is characterized with drought in the 1890s, 1930s, 1950s and 1970s. Since the 1970s, the Upper South Platte (USP) has had no significant drought and the Lower South Platte (LSP) has had only short term drought at 3 month and 6 month SPI in 1994 and 1989. Longer time scales have not shown drought. While the recent history has been wet at longer time scales, it has not been as wet as the 1905-1930 period. The droughts in the 1970s were stronger in the Lower South Platte (LSP) and there were several short episodes in 1974, 1976 and 1978. The Arkansas drainage (Upper and Lower) have good long term data sites prior to 1900 but does not have the strong drought conditions prior to 1905 in the longer time scales. They do show significant drought up to the 12 month time scale. The short time scales do show recent drought in 1996, 1991, 1982 and 1981. At the 12 month time scale, the last serious drought was in the 1960s. The 1930s were the worst decade for the Lower Arkansas (LAR) but not the Upper Arkansas (UAR). The Upper Arkansas (UAR) had more drought problems in the 1950s and 20