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dramatically with increasing elevation. Below 7,500 feet large rainfall floods (with peak discharges exceeding 100,000 cubic feet per second and with unit discharges exceeding 2,200 cubic feet per second per square mile) have occurred. Above 7,500 feet, streamflows from snowmelt or low intensity rain have been less than 100 cubic feet per second and less than 50 cubic feet per second per square mile. See Figure 5 (from Jarrett, 1987) for the unit discharge and elevation relation for all of the Arkansas River Basin streamflow data which shows sim~lar and complimentary results. An important point is that there have been extensive streamflow records collected by the Southern Colorado Power Company for small basins in the vicinity of Manitou Springs, however there is no indicat~on of significant rainfall runoff above 7,~00 feet. If intense rainfall and frequent were to occur above this elevation, certainly one of the stations would have recorded such an event. This would indicate that rainfall flooding above 7,500 feet is less common than previously expected. DISCUSSION AND CONCLUSION Paleohydrologic investigations were done in streams draining into Manitou Springs and Colorado Springs. These investigations indicated the approximate magnitude of recent (or frequent), medium, and the largest floods to occur in these basins (Figure 1). Alsa, a review of available streamflow records was made, and with the paleoflood investigations, indicates that significant rainfall flooding occurs very infreqently above 7,500 to 8,000 feet in the Manitou Springs and Colorado Springs area; no significant flood deposits were found. Earlier onsite paleohydrologic investigations in the Palmer Lake area support the 7.500 to 8,000 feet elevation limit. Review of all paleoflood information suggests that there is a preference for floods on basins facing to the southeast (towards the prevailing flow of moisture); for example Williams Canyon and Camp Creek. Camp Creek appears to have the greatest potential for flooding of the streams investigated. Whereas, basins facing towards the northeast (away from the prevailing moisture source) seem to have lower magnitude floods; for example, Ruxton Creek and Sutherland Creek. Ruxton Creek appears to have the lowest potential for flooding. The, infrequent rainfall flooding that has occurred in the in the ManitoJ Springs and Colorado Springs tributaries has resulted from runoff from the drainage area below 7,500 to 8,000 feet. Since flooding occurs in such a small area (and on extremely steep slopes), there will be minimal time for a flood warning. Additional ~nvestigation of the meteorological causes appears to be needed because streams with the greatest flood potential (such as Ruxton Creek) may have the lowest flood potential. This needs to be factored into the design of the flood-warning system. This analysis suggests that there appears to be a lower flood risk in the study area streams than previously thought and needs to be evaluated further. The flood discharges (U.S. Federal Emergency Management Agency, 1983, Table 1) indicates that on all tributaries the 10-year peak discharges are between 1,930 and 2,630 cubic feet per 1~