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peak ~iscr~arge ror recent flows i~ estimated to be lb0 cubic feet per second. Wellington Gulch ,joins Fountain Creek at an elevation of 7,S~~D seet ar,~ has an eetimated drainage area af 1.5 square mile~a. There are no ~igniiicant fl~od deposits or flood debris in the channel. The channel is about 2 feet wide and less than 2~feet deep. The stream banks are covered with grass and small willows. Recent d:ischarges have been lees than 40 cubic feet per second. This lack of flood evidence indicates that flows have not exceeded the erosion threshold diecharge of ~00 to 300 cubic feet per second for 100 years or more. Just upstream from Highway '~4 is a gravel pit that completeLy c~vers the floodplain. If significant streamflow were to occur, it would disrupt the mining uperation. Hes gravel mining been disrupt~d^ Sand Gulch ,~oins Fountain Creek at an elevation of 7,550 feet and has an estimated drainage area ~f 1.5 square miles. Th~re is no ~gni£icant flood depasits or tlood dzbris in the cha.n:nel. The channel is about ? feet wide and about 1 fo~t deep. The str~eam banks are covered with grass and in~icate very minor bank erosion. The recent peak discharges have been less than 20 cubic feet per second. This lack of flood evidence indicates that glows have not exceeded the erosion threshold discharge c~f 200 to 300 cubic feet per second for 100 years or more. At an elevation of 7,SQ10 feet, Fountain Creek has an average channel width ~f L~ feet. ThF banks are well covered With grass and moss and channel boulders are wE~ll covered with li~hen to about 2 feet above the streambed. Recent ~eak discharges probably have been less than 160 cubic feet per second. There is no flood evidence higher in the channel. The drainage area upstream from here is estimated to be 8 square miles. The maximum peak discharge in ~'ountain Creek probably has been less than 800 cubic f.eet per second (Figure 5, for 8 square miles times 100 cubic feet per ~econd per square mile). Summary of Previous Onsite Paleohydrologi~ Investigations Because of the catastrophic 1965 flood which centered on the Palmer Divide, John Costa, then Professor at the University of Denver (currently with the U.S. Geological Survey, Vancouver, Washington) and Robert Jarrett conducted pa~.eohydrologic investigations as part of the Colorado ~ietrict's flooci hydrology study (Jarrett, 1987). The purpose of these onsite inve5ti_gati~ns was to visit mountain channels to aearch for stratigraphic and ~eomorphic evidence of catastrophic flooding. One area of concentrated study was in the tributaries to Plum and M~nument Creeks. These studies indicated that large floods left easily identifiable deposits ot the magnitude and frequency of flooding in mountain channels. It was during this fieldwork that paleoflood investigations became identified as a tool to ~ompliment conventional streamflow-gaging station records in identifying an elevation limit o.f rainfall fl~oding in Colorado. Only the pertinent information of those studies is summarized here. That being that large floods have occurred in all foothill basins but that there is an elevation limit to this flooding and needs to be =_summarized -!