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I I Creek flood plain. An estimated 1,600 persons were employed there. As far as scream records, on page 5, there is a table showing records for two gaging stations. One is at Morrison, which is about two miles upstream of the study reach, and the other is the Sheridan gage, which is located at Lowell Boulevard. These data are listed on table I, and the maximum flow has been a little greater than 8,000 cfs since the flows were recorded beginning in 1933. We have defined the flood potential by a lOa-year flood, which we call an intermediate regional flood, and a standard project flood, which is a greater flood, and is provided just to show that greater floods are possible and that certain uses should avoid these larger flood areas. As stated on page 8, the Denver office of the National Oceanic and Atmospheric Administration is responsible for providing flood warnings in the area. They have weather radar and they have one river gage station that they rely on, plus rainfall reports; and when they get this information, then they can release it to news media. The lead time on a forecast is normally about six hours from the time they put out the information until the flood crest arrives. Bear Creek is the stream which has flash flOOdings; so when people get the warnings, they had better start acting because they do not have much time. Water velocities on the flood plain can reach up to 7 feet a second. Normally, we consider depths of 3 feet, or velocities of 3 feet per second combined with depths of 2 feet more, as hazardous; and on the Bear Creek flood plain, this occurs very frequently over most of the area. On pages 14 through 16, we have some flood plain reference data tables with orientation of the cross section data. Back on plate I is a schematic map of the Denver metropolitan area. Ue have not been able to keep up with boundary changes in the Denver area, so we have just shown a schematic map to more or less relate one municipality to another. It also shows the shape of the Bear Creek basin and the length of the study reach. On plate 2 is the upstream end of the study reach; it shows the flood outline for the upstream end of the study. It is in the Mount Carbon area. As ~Ie progress on downstream, we get into more of the suburban areas, 11adsworth Avenue area par- ticularly. The solid blue line is the intermediate regional flood, or the lOa-year flood, limits. The small dot designation is the standard project flood, or the greater flood - a larger flood. You can see there is flooding in the urban and residential areas. Plate 4 is also more of the same. On these plates, you will see a black -48-