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~ surface upstream, and It Is unlikely that debrIs would block any of these bridges. On the Gunnison River, there Is one very old bridge. It has no center piers to collect debris, and Is not considered obstructive to floodflows. I r Flood Damage Reduction Measures - Local Interests have constructed levees on the south bank of the Colorado River downstream from the mouth of the Gunnison River to provide some protection to residents In the Connecticut Lakes area. Low dikes have also been constructed along Riverside Park on the north bank of the Colorado River upstream from the Grand Avenue bridge. During the 1957 flood, the U.S. Atomic Energy Commission constructed a levee along the east bank of the Gunnison River, which affords protec- tion to Its Installation. The COlorado River basin reservoirs, Including Granby, Green Mountain, DI I Ion, WII I lams Fork, Vega, and Ruedl, are operated for water conservation purposes and consequently provide only Incidental flood protection to the Grand Junction area. This Incidental storage, trans- mountain diversion, and Irrigation uses have served to reduce peak flows for very large floods In the study area. Similarly, In the Gunnison River basin, Taylor Park and Morrow Point Reservoirs provide Incidental flood protection to the Grand Junction area. Paonla and Blue Mesa are being operated so as to afford addItional flood control based upon forcastlng snowmelt runoff condi- tIons. Regulations are being drafted by the Corps of Engineers and the U.S. Bureau of ReclamatIon to define the actual operation of these latter two reservoirs. Other Factors and Their Impacts Flood warning and forecasting - The NatIonal Oceanic and Atmospheric Administration (NOAA) through Its National Weather Service, maintains year-round surveil lance of weather and flood conditions. Flood fore- casts for the Colorado and Gunnison Rivers are prepared during periods 7